The PYQ practice room
GATE CE 2025 Set 2
All 65 solved GATE CE 2025 Set 2 questions in exam order. Open a question, commit to an answer, and learn from the step-by-step solution. One question at a time.
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65
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100
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General Aptitude (GA)
101
Q1MCQ1 markEasyEven though I had planned to go skiing with my friends, I had to __________ at the last moment because of an injury. Select the most appropriate option to complete the above…Think it through. Then check your answer.Question
Even though I had planned to go skiing with my friends, I had to __________ at the last moment because of an injury.Select the most appropriate option to complete the above sentence.Correct answer
(D) back out
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The phrasal verb "back out" means to withdraw from a commitment or a previously agreed-upon plan. In the context of the sentence, the speaker had to withdraw from the skiing trip due to an injury.- back up: to support someone or to move a vehicle in reverse.
- back of: not a standard phrasal verb in this context.
- back on: not appropriate here.
2
Q2MCQ1 markEasyThe President, along with the Council of Ministers, ___________ to visit India next week. Select the most appropriate option to complete the above sentence.Think it through. Then check your answer.Question
The President, along with the Council of Ministers, ___________ to visit India next week.Select the most appropriate option to complete the above sentence.Correct answer
(B) wishes
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In English grammar, when a singular subject (The President) is followed by a parenthetical phrase starting with "along with", "as well as", or "together with", the verb must agree with the singular subject, not the plural object of the prepositional phrase (Council of Ministers). Therefore, the singular verb "wishes" is the correct choice.3
Q3MCQ1 markEasyAn electricity utility company charges ₹ 7 per kWh (kilo watt-hour). If a 40-watt desk light is left on for 10 hours each night for 180 days, what would be the cost of energy…Think it through. Then check your answer.Question
An electricity utility company charges ₹ 7 per kWh (kilo watt-hour). If a 40-watt desk light is left on for 10 hours each night for 180 days, what would be the cost of energy consumption? If the desk light is on for 2 more hours each night for the 180 days, what would be the percentage-increase in the cost of energy consumption?Correct answer
(B) ₹ 504; 20%
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1.Calculate initial energy consumption ():2.Calculate initial cost ():3.Calculate percentage increase in cost:The time increases from 10 hours to 12 hours (an increase of 2 hours). Since power, the rate per kWh, and the number of days remain constant, the percentage increase in cost is directly proportional to the percentage increase in time:
Thus, the initial cost is ₹ 504 and the percentage increase is 20%, which corresponds to option (B).4
Q4MCQ1 markMediumIn the context of the given figure, which one of the following options correctly represents the entries in the blocks labelled (i), (ii), (iii), and (iv), respectively? | N | U |…Think it through. Then check your answer.Question
In the context of the given figure, which one of the following options correctly represents the entries in the blocks labelled (i), (ii), (iii), and (iv), respectively?N U F (i) 21 14 9 6 H L (ii) O 12 (iv) 15 (iii) Correct answer
(C) I, J, 10, and 8
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The grid is divided into two halves: top (rows 1 & 2) and bottom (rows 3 & 4). In each half, the sum of the alphabetical position of the letter and the number in the same column is constant for pairs of columns.Top Half:
Column 1:
Column 2:
Column 3:
Column 4: , which corresponds to the letter 'I'.Bottom Half:
Column 1:
Column 2:
Column 3:
Column 4:
From Column 3: , which corresponds to the letter 'J'.Thus, the entries are (i)=I, (ii)=J, (iii)=10, and (iv)=8.5
Q5MCQ1 markEasyA bag contains Violet (V), Yellow (Y), Red (R), and Green (G) balls. On counting them, the following results are obtained: (i) The sum of Yellow balls and twice the number of…Think it through. Then check your answer.Question
A bag contains Violet (V), Yellow (Y), Red (R), and Green (G) balls. On counting them, the following results are obtained:(i) The sum of Yellow balls and twice the number of Violet balls is 50.
(ii) The sum of Violet and Green balls is 50.
(iii) The sum of Yellow and Red balls is 50.
(iv) The sum of Violet and twice the number of Red balls is 50.Which one of the following Pie charts correctly represents the balls in the bag?Correct answer
(A) [figure]
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Let be the number of Violet, Yellow, Red, and Green balls respectively. From the given conditions:
1)
2)
3)
4) From (4), . Substitute this into (1):
From (3), . Substitute this into the equation above:
Now find other values:
Total balls = . The percentages are:
.
This distribution is correctly represented by Pie chart (A).6
Q6MCQ2 marksEasy“His life was divided between the books, his friends, and long walks. A solitary man, he worked at all hours without much method, and probably courted his fatal illness in this…Think it through. Then check your answer.Question
“His life was divided between the books, his friends, and long walks. A solitary man, he worked at all hours without much method, and probably courted his fatal illness in this way. To his own name there is not much to show; but such was his liberality that he was continually helping others, and fruits of his erudition are widely scattered, and have gone to increase many a comparative stranger’s reputation.”(From E.V. Lucas’s “A Funeral”)Based only on the information provided in the above passage, which one of the following statements is true?Correct answer
(A) The solitary man described in the passage is dead.
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The passage mentions that the man "probably courted his fatal illness" and the source is titled "A Funeral", which strongly implies the subject is deceased. Option (B) is incorrect because the text states his erudition increased strangers' reputations, not vice versa. Option (C) is a literal misinterpretation of the metaphorical "fruits of his erudition". Option (D) misinterprets the verb "courted" (meaning to invite or risk) as a noun referring to a legal court.7
Q7MCQ2 marksMediumFor the clock shown in the figure, if , and , then which one among the given options is most appropriate for ? [figure]Think it through. Then check your answer.Question
For the clock shown in the figure, if
, and
,
then which one among the given options is most appropriate for ?
Correct answer
(B) P R T O Q S U
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Assign numerical values to the letters based on their clock positions: .
Analyzing :
The intervals are (modulo 12).
Analyzing :
The intervals are (modulo 12).
Applying this pattern to starting at :1.2.3.4.5.6.The sequence is .8
Q8MCQ2 marksMediumConsider a five-digit number that has distinct digits , and , and satisfies the following conditions: If integers 1 through 5…Think it through. Then check your answer.Question
Consider a five-digit number that has distinct digits , and , and satisfies the following conditions:
If integers 1 through 5 are used to construct such a number, the value of is:Correct answer
(C) 3
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From the given conditions, we can establish a chain of inequalities: .
Since the digits are distinct and chosen from , we have 4 digits in this chain.
If , then must be 5. But must also be , so would have to be 5, which violates the distinct digits rule.
If , then can be 4 or 5, and can be the other value (4 or 5). and must be smaller than , so they must be . Specifically, and to satisfy . This works perfectly: or .
If , there is only one digit (1) smaller than , so we cannot satisfy . Thus, must be 3.9
Q9MCQ2 marksMediumA business person buys potatoes of two different varieties P and Q, mixes them in a certain ratio and sells them at ₹ 192 per kg. The cost of the variety P is ₹ 800 for 5 kg. The…Think it through. Then check your answer.Question
A business person buys potatoes of two different varieties P and Q, mixes them in a certain ratio and sells them at ₹ 192 per kg.
The cost of the variety P is ₹ 800 for 5 kg.
The cost of the variety Q is ₹ 800 for 4 kg.
If the person gets 8% profit, what is the P:Q ratio (by weight)?Correct answer
(A) 5:4
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1.Calculate Cost Price (CP) per kg for each variety:
2.Calculate the CP of the mixture () using the Selling Price () and profit (8%):3.Use the rule of alligation to find the ratio :Ratio
Ratio
Ratio
Ratio .10
Q10MCQ2 marksMediumThree villages P, Q, and R are located in such a way that the distance PQ = 13 km, QR = 14 km, and RP = 15 km, as shown in the figure. A straight road joins Q and R. It is…Think it through. Then check your answer.Question
Three villages P, Q, and R are located in such a way that the distance PQ = 13 km, QR = 14 km, and RP = 15 km, as shown in the figure. A straight road joins Q and R. It is proposed to connect P to this road QR by constructing another road. What is the minimum possible length (in km) of this connecting road?Note: The figure shown is representative.Correct answer
(C) 12.0
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The minimum distance from village P to the straight road QR is the length of the altitude from P to the side QR in . Let the sides be km, km, and km.First, calculate the area of using Heron's formula:
Semi-perimeter km.
Area .The area is also given by :
.
km.Thus, the minimum length of the connecting road is 12.0 km.
Civil Engineering (CE2)
5511
Q11MCQ1 markEasyFor the matrix given below, the transpose is ______.Think it through. Then check your answer.Question
For the matrix given below, the transpose is ______.Correct answer
(A) bmatrix 2 & 1 & 4 \ 3 & 4 & 3 \ 4 & 5 & 2 bmatrix
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The transpose of a matrix is obtained by interchanging its rows and columns.
For matrix , the transpose .
Given , its transpose is:
.
This matches option (A).12
Q12MCQ1 markEasyIntegration of with i.e.,Think it through. Then check your answer.Question
Integration of with i.e.,Correct answer
(A) x · ln(x) - x + Constant
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To integrate , we use integration by parts: .
Let and .
Then and .
Substituting these into the formula:
This matches option (A).13
Q13MCQ1 markEasyConsider the following statements (P) and (Q): (P): Fly ash and ground granulated blast furnace slag can be used as mineral admixtures in concrete. (Q): As per IS…Think it through. Then check your answer.Question
Consider the following statements (P) and (Q):
(P): Fly ash and ground granulated blast furnace slag can be used as mineral admixtures in concrete.
(Q): As per IS 456:2000, the minimum moist curing period becomes higher when a mineral admixture is added to concrete.
Identify the CORRECT option from choices given below.Correct answer
(A) Both (P) and (Q) are TRUE.
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Statement (P) is TRUE: Fly ash and Ground Granulated Blast Furnace Slag (GGBS) are widely recognized and used as mineral admixtures in concrete to improve durability and workability.
Statement (Q) is TRUE: According to IS 456:2000, Clause 13.5.1, the minimum curing period for concrete where mineral admixtures or blended cements are used is at least 10 days (compared to 7 days for Ordinary Portland Cement in normal weather conditions). Thus, the curing period is higher when mineral admixtures are added.
Therefore, both statements are true.14
Q14MCQ1 markMediumConsider the pin-jointed truss shown in the figure. Influence line is drawn for the axial force in the member G-I, when a unit load travels on the bottom chord of the truss.…Think it through. Then check your answer.Question
Consider the pin-jointed truss shown in the figure. Influence line is drawn for the axial force in the member G-I, when a unit load travels on the bottom chord of the truss. Identify the CORRECT influence line from the following options:Note: Positive value corresponds to tension and negative value corresponds to compression in the member.
Correct answer
(B) [figure]
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To find the influence line for the axial force in the bottom chord member , we use the method of sections. A vertical section is passed through the panel containing . The moment center for the force in is the joint opposite to it in the panel, which is joint (at m, m) if the diagonal is .1.Reaction at A (): For a unit load at distance from , .2.Force in G-I (): Taking moments about joint for the left part of the section:- When the unit load is at ( m): .
- (Tension).
15
Q15MCQ1 markEasyThe most suitable test for measuring the permeability of clayey soils in the laboratory is ______.Think it through. Then check your answer.Question
The most suitable test for measuring the permeability of clayey soils in the laboratory is ______.Correct answer
(D) Falling head test
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The Falling head test is used for fine-grained soils like clay which have low permeability. The Constant head test is suitable for coarse-grained soils (sand, gravel) with high permeability. The Pumping out test is a field test, and the Hydrometer test is used for grain size analysis of fine-grained soils.16
Q16MCQ1 markEasyA hydraulic jump occurs in an open channel when the slope of the channel changes from ______.Think it through. Then check your answer.Question
A hydraulic jump occurs in an open channel when the slope of the channel changes from ______.Correct answer
(B) STEEP slope to MILD slope
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A hydraulic jump occurs when the flow transitions from a supercritical state to a subcritical state. Supercritical flow occurs on a STEEP slope (where the normal depth is less than the critical depth), and subcritical flow occurs on a MILD slope (where the normal depth is greater than the critical depth). Therefore, a jump occurs when the slope changes from STEEP to MILD.17
Q17MCQ1 markEasyThe bacteria mainly responsible for crown corrosion in a sewer is ______.Think it through. Then check your answer.Question
The bacteria mainly responsible for crown corrosion in a sewer is ______.Correct answer
(C) Sulphur reducing bacteria
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Crown corrosion in sewers is a result of the sulfur cycle. Under anaerobic conditions in the sewage, Sulphur reducing bacteria (SRB) like Desulfovibrio reduce sulfates to hydrogen sulfide (). This gas escapes to the sewer atmosphere and is subsequently oxidized to sulfuric acid () by sulfur-oxidizing bacteria (like Thiobacillus) on the moist crown of the pipe. The sulfuric acid then reacts with the concrete, causing corrosion. Among the given options, sulfur-reducing bacteria are the primary group involved in the initiation of this process.18
Q18MCQ1 markMediumThe recommended minimum traffic growth rate and design period considered for structural design of flexible pavements for national highways in India as per IRC 37:2018 is…Think it through. Then check your answer.Question
The recommended minimum traffic growth rate and design period considered for structural design of flexible pavements for national highways in India as per IRC 37:2018 is ____ percentage and ____ years, respectively.Correct answer
(A) 5, 20
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As per IRC 37:2018:1.Traffic Growth Rate: Clause 4.2.2 states that in the absence of specific data, a minimum growth rate of per annum should be adopted.2.Design Period: Clause 3.3.1 recommends a design life of years for National Highways and State Highways.Thus, the correct option is (A).19
Q19MCQ1 markMediumAfter applying the correction for elevation and temperature, the runway length is m. The corrected runway length (in m) for an effective gradient of is ______ (round…Think it through. Then check your answer.Question
After applying the correction for elevation and temperature, the runway length is m. The corrected runway length (in m) for an effective gradient of is ______ (round off to the nearest integer).Correct answer
(A) 840
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The correction for gradient in runway design (as per ICAO/FAA standards) requires the runway length to be increased at the rate of for every of effective gradient.Given:
Length after elevation and temperature corrections () = m
Effective gradient () = Correction for gradient = mFinal corrected runway length = m.20
Q20MCQ1 markEasyThe point where the road alignment changes from a tangent to a curve is known as ______.Think it through. Then check your answer.Question
The point where the road alignment changes from a tangent to a curve is known as ______.Correct answer
(C) Point of curve
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The point where the straight path (tangent) ends and the curve begins is called the Point of Curve (PC) or point of commencement. The point where the curve ends and the next tangent begins is the point of tangency (PT).21
Q21MSQ1 markEasyConsider a velocity vector, in coordinates given below. Pick one or more CORRECT statements(s) from the choices given below.…Think it through. Then check your answer.Question
Consider a velocity vector, in coordinates given below. Pick one or more CORRECT statements(s) from the choices given below.Correct answer
(A) z -component of Curl of velocity; × V = ((∂ v)/(∂ x) - (∂ u)/(∂ y)) z; (C) Divergence of velocity; · V = ((∂ u)/(∂ x) + (∂ v)/(∂ y))
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Given .1.Curl of velocity:Thus, the -component of the curl is . Statement (A) is correct.2.Divergence of velocity:Statement (C) is correct.22
Q22MSQ1 markMediumGiven that and are not null sets, which of the following statements regarding probability is/are CORRECT?Think it through. Then check your answer.Question
Given that and are not null sets, which of the following statements regarding probability is/are CORRECT?Correct answer
(B) Conditional probability, P(A B) = 1 if B ⊂ A.; (C) P(A ∪ B) = P(A) + P(B), if A and B are mutually exclusive.
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Step-by-step evaluation:- (A) For mutually exclusive events, . The expression is for independent events. Incorrect.
- (B) . If , then , so . Correct.
- (C) By the addition rule, . For mutually exclusive events, , so . Correct.
- (D) For independent events, . Since and are not null sets, . Incorrect.
23
Q23MSQ1 markMediumIn the context of construction materials, which of the following statements is/are CORRECT?Think it through. Then check your answer.Question
In the context of construction materials, which of the following statements is/are CORRECT?Correct answer
(A) If the characteristic strength is defined as that value below which not more than 50% results are expected to fall, the target mean strength in mix design will be taken same as the characteristic strength irrespective of the degree of quality control expected at the site.; (C) The stress-strain curve of concrete for 1-day duration of loading is associated with a smaller secant modulus of elasticity compared to the stress-strain curve of the same concrete for 10-minutes duration of loading.; (D) The increase of carbon in steel usually leads to an increase in its 0.2% proof stress.
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Statement (A) is correct because if the characteristic strength is defined at the 50th percentile, then equals the mean strength . Since target mean strength and for the 50th percentile, regardless of the standard deviation (quality control). Statement (B) is incorrect as the ten percent fines value is the load in kN required to produce 10% fines, which is a dimensional quantity. Statement (C) is correct because longer loading duration allows for creep, which increases strain for a given stress, thereby reducing the secant modulus . Statement (D) is correct as increasing carbon content in steel increases its hardness and yield strength (proof stress).24
Q24MSQ1 markMediumWhich of the following statements is/are INCORRECT?Think it through. Then check your answer.Question
Which of the following statements is/are INCORRECT?Correct answer
(A) As the depth of the ground water table from the ground surface increases, the effective stress in the soil decreases.; (D) The earth pressure at any point in the soil, under all conditions, is always smaller than the vertical effective stress at that point.
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Statement (A) is incorrect because lowering the water table (increasing its depth) removes buoyancy, which increases the effective stress . Statement (B) is correct as capillary tension in moisture films around sand grains creates apparent cohesion that increases volume. Statement (C) is correct as liquefaction occurs when pore water pressure equals total stress , making . Statement (D) is incorrect because horizontal earth pressure can exceed vertical effective stress in passive states () or in overconsolidated soils ().25
Q25MSQ1 markMediumPick one or more CORRECT statement(s) from the choices given below, in the context of upstream and downstream cut-offs provided below the concrete apron of weirs / barrages…Think it through. Then check your answer.Question
Pick one or more CORRECT statement(s) from the choices given below, in the context of upstream and downstream cut-offs provided below the concrete apron of weirs / barrages constructed across alluvial rivers.Correct answer
(B) Cut-offs are provided to increase the seepage length and prevent failure due to piping.; (C) The bottom level of cut-offs mainly depends on the scour depth.
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Statement (A) is incorrect as cut-offs manage subsurface seepage, not surface flow rate. Statement (B) is correct as cut-offs increase the creep path (seepage length), reducing the exit gradient to prevent piping. Statement (C) is correct because cut-offs must extend below the maximum scour depth to ensure the structure's stability. Statement (D) is incorrect as the hydraulic jump is controlled by the stilling basin floor level and length, not the cut-offs themselves.26
Q26MSQ1 markMediumIn the context of the effect of drainage density on the run-off generation and the hydrograph at the catchment outlet, all other factors remaining the same, pick one or more…Think it through. Then check your answer.Question
In the context of the effect of drainage density on the run-off generation and the hydrograph at the catchment outlet, all other factors remaining the same, pick one or more CORRECT statement(s) from the choices given below.Correct answer
(B) Lower drainage density results in lower peak in flood hydrograph compared to that when the drainage density is higher.; (C) Lower drainage density results in a flood hydrograph with a longer time base compared to that when the drainage density is higher.
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Drainage density () is defined as the total length of all streams in a drainage basin divided by the total area of the basin. A higher drainage density indicates a well-developed network of channels, which allows water to reach the outlet faster, resulting in a higher peak flow and a shorter time base. Conversely, a lower drainage density means water takes longer to reach the outlet, leading to a lower peak flow and a longer time base. Thus, statements (B) and (C) are correct.27
Q27MSQ1 markEasyIdentify the treatment technology/technologies NOT recommended for highly biodegradable organic solid wastes.Think it through. Then check your answer.Question
Identify the treatment technology/technologies NOT recommended for highly biodegradable organic solid wastes.Correct answer
(D) Open dumping
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Highly biodegradable organic solid wastes are best treated using biological processes such as anaerobic digestion, composting, or biohydrogenation to recover energy or nutrients. Open dumping is an unscientific and environmentally hazardous method of disposal and is not a recommended treatment technology for any waste.28
Q28MSQ1 markMediumWhich of the following statements is/are INCORRECT?Think it through. Then check your answer.Question
Which of the following statements is/are INCORRECT?Correct answer
(A) Bitumen having lower softening point is preferred in warm climate regions.
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Statement (A) is INCORRECT because in warm climate regions, bitumen with a higher softening point is preferred to ensure it does not soften excessively under high ambient temperatures, which prevents issues like rutting or bleeding. Statements (B), (C), and (D) are correct: viscosity affects workability; Marshall mix design typically targets 3-5% air voids; and solubility tests determine purity.29
Q29NAT1 markEasyThe “order” of the following ordinary differential equation is ______.Think it through. Then check your answer.Question
The “order” of the following ordinary differential equation is ______.Correct answer
3 to 3
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The order of an ordinary differential equation is defined as the order of the highest derivative present in the equation. In the given equation:The derivatives present are:1.Third-order derivative:2.Second-order derivative:3.First-order derivative:The highest order derivative is the third-order derivative. Therefore, the order of the differential equation is 3.30
Q30NAT1 markMediumThe design shear strength of a reinforced concrete rectangular beam with a width of and an effective depth of , is . The torsional…Think it through. Then check your answer.Question
The design shear strength of a reinforced concrete rectangular beam with a width of and an effective depth of , is . The torsional moment capacity of the section (in ) under pure torsion, as per IS 456:2000, is ______ (round off to one decimal place).Correct answer
5.7 to 6
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According to IS 456:2000, the equivalent shear force for a section subjected to shear force and torsional moment is given by:For pure torsion, . The torsional capacity is reached when the equivalent shear force equals the shear capacity of the concrete section :Substituting :Given:
Rounding off to one decimal place, we get .31
Q31NAT1 markMediumFrom a flow-net diagram drawn under a concrete dam, following information are obtained: (i) The head difference between upstream and downstream side of the dam is .…Think it through. Then check your answer.Question
From a flow-net diagram drawn under a concrete dam, following information are obtained: (i) The head difference between upstream and downstream side of the dam is . (ii) The total number of equipotential drops between upstream and downstream side of the dam is . (iii) The length of the field nearest to the toe of the dam in the downstream side is .If the soil below the dam is having a saturated unit weight of and unit weight of water is , then the factor of safety against the quick condition will be ______ (round off to two decimal places).Correct answer
1.24 to 1.3
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1.Calculate the head loss per drop ():Total head difference,
Total number of equipotential drops,
2.Calculate the exit gradient ():Length of the field nearest to the toe,
3.Calculate the critical hydraulic gradient ():Saturated unit weight of soil,
Unit weight of water,
Submerged unit weight,
4.Calculate the factor of safety ():Rounding off to two decimal places, we get .32
Q32NAT1 markHardA 6 m thick clay stratum has drainage at both its top and bottom surface due to the presence of sand strata. The time to complete 50% consolidation is 2 years. The coefficient of…Think it through. Then check your answer.Question
A 6 m thick clay stratum has drainage at both its top and bottom surface due to the presence of sand strata. The time to complete 50% consolidation is 2 years. The coefficient of volume change () is and unit weight of water is .The coefficient of permeability (in m/year) is ______ (round off to three decimal places).Correct answer
0.01 to 0.015
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Given:
Thickness of clay stratum,
Drainage condition: Double drainage (top and bottom sand strata)
Drainage path,
Time for 50% consolidation,
Coefficient of volume change,
Unit weight of water, Step 1: Calculate the time factor () for
Step 2: Calculate the coefficient of consolidation ()
Step 3: Calculate the coefficient of permeability ()
Rounding off to three decimal places, .33
Q33NAT1 markEasyConsider steady flow of water in the series pipe system shown below, with specified discharge. The diameters of Pipes A and B are 2 m and 1 m, respectively. The lengths of pipes A…Think it through. Then check your answer.Question
Consider steady flow of water in the series pipe system shown below, with specified discharge. The diameters of Pipes A and B are 2 m and 1 m, respectively. The lengths of pipes A and B are 100 m and 200 m, respectively. Assume the Darcy-Weisbach friction coefficient, as 0.01 for both the pipes.The ratio of head loss in Pipe-B to the head loss in Pipe-A is ______ (round off to the nearest integer).
Correct answer
64 to 64
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For steady flow in series, the discharge () is the same for both pipes.
Head loss due to friction () is given by the Darcy-Weisbach equation:
(using SI units where )Since and are constant for both pipes:
Ratio of head loss in Pipe-B to Pipe-A:
Given:
.34
Q34NAT1 markHardFree residual chlorine concentration in water was measured to be (as ). The of water is . By using the chemical equation given below, the …Think it through. Then check your answer.Question
Free residual chlorine concentration in water was measured to be (as ). The of water is . By using the chemical equation given below, the concentration (in ) in water is ________________ (round off to one decimal place).Atomic weight:Correct answer
2.5 to 2.6
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1.Calculate the total molar concentration of free residual chlorine (FRC):The FRC is given as as .
Molecular weight of .
Total concentration .2.Use the equilibrium equation for HOCl dissociation:The equilibrium constant is given by:
3.Determine the concentration of from pH:4.Find the ratio of to :Thus, .5.Calculate :Total FRC concentration .
6.Final Answer:Rounding to one decimal place, the concentration of is . The provided answer range is to .35
Q35NAT1 markMediumA surveyor measured the distance between two points on the plan drawn to a scale of and the result was . Later, it was discovered that…Think it through. Then check your answer.Question
A surveyor measured the distance between two points on the plan drawn to a scale of and the result was . Later, it was discovered that the scale used was .The true distance between the points (in m) is ______ (round off to the nearest integer).Correct answer
936 to 936
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Given:- Actual scale of the plan ():
- Measured distance ():
- Scale used by the surveyor ():
The surveyor obtained by using a scale of . Therefore, the physical length on the paper is:Step 2: Calculate the true distance ()
Using the actual scale of the plan (), the true ground distance is:Rounding to the nearest integer, the true distance is .36
Q36MCQ2 marksEasyPick the CORRECT solution for the following differential equationThink it through. Then check your answer.Question
Pick the CORRECT solution for the following differential equationCorrect answer
(A) y = ln(e^x + Constant)
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The given differential equation is:Using the property of exponents , we can separate the variables:Integrating both sides:where is the constant of integration. Taking the natural logarithm on both sides to solve for :This matches option (A).37
Q37MCQ2 marksMediumA circular tube of thickness and diameter is welded to a flat plate using fillet weld along the circumference. Assume Fe410 steel and…Think it through. Then check your answer.Question
A circular tube of thickness and diameter is welded to a flat plate using fillet weld along the circumference. Assume Fe410 steel and shop welding.As per IS 800:2007, the torque that can be resisted by the weld (in kN.m) is ______ (round off to one decimal place).Correct answer
(A) 65.1
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Given:
Diameter of tube
Weld size
Throat thickness
For Fe410 steel, ultimate strength .
For shop welding, partial safety factor .
Design strength of the weld .
The torque capacity of a circular fillet weld is given by:Rounding to one decimal place, we get .38
Q38MCQ2 marksMediumThe figure shows a propped cantilever with uniform flexural rigidity (in N.m) and subjected to a moment (in N.m). Consider forces and displacements in the upward…Think it through. Then check your answer.Question
The figure shows a propped cantilever with uniform flexural rigidity (in N.m) and subjected to a moment (in N.m). Consider forces and displacements in the upward direction as positive.Find the upward reaction at the propped support B (in N) when this support settles by , given in metres.
Correct answer
(C) (3M)/(2L) - (3EIΔ)/(L³)
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1.Deflection due to Moment : A clockwise moment at the free end of a cantilever causes a downward deflection . In the upward-positive convention, .2.Deflection due to Reaction : An upward reaction at the prop causes an upward deflection .3.Compatibility Condition: The net upward displacement at B must equal the settlement .4.Solving for :Thus, the correct option is (C).39
Q39MCQ2 marksHardLet the state of stress at a point in a body be the difference of two plane states of stress shown in the figure. Consider all the possible planes perpendicular to the x-y plane…Think it through. Then check your answer.Question
Let the state of stress at a point in a body be the difference of two plane states of stress shown in the figure. Consider all the possible planes perpendicular to the x-y plane and passing through that point. The magnitude of the maximum compressive stress on any such plane is , where is equal to _____ (round off to one decimal place).
Correct answer
(B) 2.1
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1.Stress State 1 (): Uniaxial tension in the x-direction.2.Stress State 2 (): Uniaxial tension at . Transforming to x-y coordinates:3.Difference State ():4.Principal Stresses of :5.Maximum Compressive Stress: The magnitude is , so .40
Q40MCQ2 marksHardConsider a reinforced concrete beam section of 350 mm width and 600 mm depth. The beam is reinforced with the tension steel of 800 mm area at an effective cover of 40 mm.…Think it through. Then check your answer.Question
Consider a reinforced concrete beam section of 350 mm width and 600 mm depth. The beam is reinforced with the tension steel of 800 mm area at an effective cover of 40 mm. Consider M20 concrete and Fe415 steel. Let the stress block considered for concrete in IS 456:2000 be replaced by an equivalent rectangular stress block, with no change in (a) the area of the stress block, (b) the design strength of concrete (at the strain of 0.0035), and (c) the location of neutral axis at flexural collapse. The ultimate moment of resistance of the beam (in kN.m) is __________________ (round off to the nearest integer).Correct answer
(B) 148
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1.Given Data: mm, mm, effective cover = 40 mm mm. mm, MPa, MPa.2.Neutral Axis Depth (): From using standard IS 456 area:3.Equivalent Rectangular Stress Block:- Area
- Design strength (stress)
- Depth of rectangular block :
- Centroid of rectangle from top:
41
Q41MCQ2 marksMediumFor a partially saturated soil deposit at a construction site, water content () is 15%, degree of saturation () is 67%, void ratio () is 0.6 and specific gravity of…Think it through. Then check your answer.Question
For a partially saturated soil deposit at a construction site, water content () is 15%, degree of saturation () is 67%, void ratio () is 0.6 and specific gravity of solids in the soil () is 2.67. Consider unit weight of water as .To fully saturate of this soil, the required weight of water (in kN) will be ______ (round off to the nearest integer).Correct answer
(B) 6
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1.Given Data:- Water content,
- Degree of saturation,
- Void ratio,
- Specific gravity,
- Unit weight of water,
- Total volume of soil,
Total volume
3.Calculate Initial Weight of Water ():Using the relation , we check for consistency: and . They are very close. Using :
4.Calculate Final Weight of Water at Saturation ():At full saturation, , so
5.Calculate Weight of Water to be Added ():6.Rounding:Rounding to the nearest integer, we get .42
Q42MCQ2 marksMediumConsider flow in a long and very wide rectangular open channel. Width of the channel can be considered as infinity compared to the depth of flow. Uniform flow depth is…Think it through. Then check your answer.Question
Consider flow in a long and very wide rectangular open channel. Width of the channel can be considered as infinity compared to the depth of flow. Uniform flow depth is . The bed slope of the channel is . The Manning roughness coefficient value is . Acceleration due to gravity, can be taken as .The critical depth (in m) corresponding to the flow rate resulting from the above conditions is ______ (round off to one decimal place).Correct answer
(B) 0.3
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1.Given Data:- Uniform flow depth,
- Bed slope,
- Manning's coefficient,
- Gravity,
- For a very wide channel, hydraulic radius .
3.Calculate Discharge per unit width ():4.Calculate Critical Depth ():For a rectangular channel,
5.Rounding:Rounding to one decimal place, we get .43
Q43MCQ2 marksEasyMatch the following in Column I with Column II. | Column I | Column II | | :--- | :--- | | (1) Vehicle Damage Factor | A. Stability of subgrade soil | | (2) Passenger Car Unit |…Think it through. Then check your answer.Question
Match the following in Column I with Column II.Column I Column II (1) Vehicle Damage Factor A. Stability of subgrade soil (2) Passenger Car Unit B. Capacity of a roadway (3) Perception Reaction Time C. Design rigid pavement (4) California Bearing Ratio D. Design flexible pavement E. Stopping sight distance Correct answer
(A) (1)-(D); (2)-(B); (3)-(E); (4)-(A)
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The correct matches are as follows:- (1) Vehicle Damage Factor (VDF): It is used to convert the number of commercial vehicles into standard axle load repetitions for the Design of flexible pavement (as per IRC 37). Thus, (1)-(D).
- (2) Passenger Car Unit (PCU): It is a factor used to convert different vehicle types into a common unit to determine the Capacity of a roadway. Thus, (2)-(B).
- (3) Perception Reaction Time: It is the time taken by a driver to react to an object, which is a critical component in calculating the Stopping sight distance (SSD). Thus, (3)-(E).
- (4) California Bearing Ratio (CBR): It is a measure of the strength of the subgrade and is used to assess the Stability of subgrade soil. Thus, (4)-(A).
44
Q44MSQ2 marksMediumConsider the function given below and pick one or more CORRECT statement(s) from the following choices.Think it through. Then check your answer.Question
Consider the function given below and pick one or more CORRECT statement(s) from the following choices.Correct answer
(A) f(x) has a local minimum at x = 3.; (D) f(x) has a local maximum at x = 2.
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Given .
First derivative: .
Setting . Critical points are and .
Second derivative: .
At . Thus, has a local maximum at .
At . Thus, has a local minimum at .45
Q45MSQ2 marksEasyPick the CORRECT eigen value(s) of the matrix from the following choices.Think it through. Then check your answer.Question
Pick the CORRECT eigen value(s) of the matrix from the following choices.Correct answer
(A) 10; (C) -2
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The characteristic equation is .Eigenvalues are and .46
Q46MSQ2 marksMediumIn the pin-jointed truss shown in the figure, the members that carry zero force are identified. Which of the following options is/are zero-force members? [figure]Think it through. Then check your answer.Question
In the pin-jointed truss shown in the figure, the members that carry zero force are identified. Which of the following options is/are zero-force members?
Correct answer
(A) BC; (D) JK
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To identify zero-force members in a pin-jointed truss, we apply the following rules:1.If three members meet at a joint where two are collinear and no external load or reaction is applied at that joint, the third (non-collinear) member is a zero-force member.2.If only two non-collinear members meet at a joint with no external load or reaction, both are zero-force members.Applying these rules to the given truss:- Joint C: Members and are collinear. Member is the third member meeting at this joint. Since there is no external load or reaction at joint , member is a zero-force member. (Option A is correct)
- Joint E: Members and are collinear. Member is the third member. No external load at , so is a zero-force member.
- Joint J: Members and are collinear. Member is the third member meeting at this joint. Since there is no external load or reaction at joint , member is a zero-force member. (Option D is correct)
- Joint K: Members and are collinear. Member is the third member. Since is already identified as zero-force, this is consistent.
- Joint G: Members and are not collinear, and there is a diagonal member (or , , meet). Simple inspection does not yield as zero.
- Joint I: Members , , and meet. None are necessarily collinear or zero-force based on inspection.
47
Q47MSQ2 marksMediumIn the context of shear strength of soil, which of the following statements is/are CORRECT?Think it through. Then check your answer.Question
In the context of shear strength of soil, which of the following statements is/are CORRECT?Correct answer
(A) The unconfined compression test is a special case of the unconsolidated-undrained (UU) triaxial tests.; (C) Vane shear test is commonly used for determining in situ undrained strength of saturated clay soils.; (D) In an unconsolidated-undrained (UU) triaxial tests, the angle of internal friction (φ) is equal to zero.
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Statement (A) is correct because the unconfined compression test (UCT) is essentially a UU test where the cell pressure () is zero. Statement (B) is incorrect because CD tests represent long-term stability; rapid construction in clay is analyzed using undrained parameters (UU or CU tests). Statement (C) is correct as the vane shear test is specifically designed for soft, saturated clays in situ. Statement (D) is correct because for a fully saturated clay under unconsolidated-undrained conditions, the total stress failure envelope is horizontal, meaning the undrained angle of internal friction .48
Q48MSQ2 marksMediumThe drag force, on a sphere due to a fluid flowing past the sphere is a function of viscosity, , the mass density, , the velocity of flow, , and the diameter…Think it through. Then check your answer.Question
The drag force, on a sphere due to a fluid flowing past the sphere is a function of viscosity, , the mass density, , the velocity of flow, , and the diameter of the sphere, .Pick the relevant (one or more) non-dimensional parameter(s) pertaining to the above process from the following list.Correct answer
(A) (F_D)/(ρ V² D²); (C) (ρ V D)/(μ)
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Using dimensional analysis or standard fluid mechanics definitions:1.The drag coefficient is defined as . Since area , the term is a non-dimensional parameter representing the force coefficient. Thus, (A) is correct.2.The Reynolds number is the standard non-dimensional parameter for viscous flow past a body. Thus, (C) is correct.3.Checking (B): , which is not dimensionless.4.Checking (D): , which is not dimensionless.49
Q49MSQ2 marksHardA compound has a general formula and molecular weight 187. A 935 mg/l solution of the compound is prepared in distilled deionized water. The Total Organic Carbon…Think it through. Then check your answer.Question
A compound has a general formula and molecular weight 187. A 935 mg/l solution of the compound is prepared in distilled deionized water. The Total Organic Carbon (TOC) is measured as 360 mg/l (as C). The Chemical Oxygen Demand (COD) and the Total Kjeldahl Nitrogen (TKN) are determined as 600 mg/l (as ) and 140 mg/l (as N), respectively (as per the chemical equation given below). Which of the following options is/are CORRECT?Atomic weight: C(12), H(1), O(16), N(14)Correct answer
(A) a = 6; (B) b = 7; (C) c = 5
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1.Molarity of the compound = .2.TOC = . Moles of Carbon = . Since there are 'a' carbons per molecule, . (Option A is correct).3.TKN = (as N). Moles of Nitrogen = . Since there are 'd' nitrogens per molecule, . (Option D is incorrect).4.Molecular weight equation: . Substituting : .5.COD = (as ). Moles of = . From the stoichiometry, moles of = . Substituting : .6.Solving the system: and . Adding them: . (Option C is correct). Then . (Option B is correct).50
Q50MSQ2 marksMediumThe free flow speed of a highway is and its capacity is . Assume speed density relation is linear. For a traffic volume of…Think it through. Then check your answer.Question
The free flow speed of a highway is and its capacity is . Assume speed density relation is linear.For a traffic volume of , choose all the possible speeds (in km/h) from the options given below (round off to two decimal places).Correct answer
(A) 85.36; (C) 14.64
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Given:
Free flow speed
Capacity
Linear speed-density relation: We know that
The relationship between flow () and speed () for a linear model is:
For :
Using the quadratic formula:
Both speeds are possible. Thus, options (A) and (C) are correct.51
Q51NAT2 marksMediumConsider a discrete random variable whose probabilities are given below. The standard deviation of the random variable is ______ (round off to one decimal place). | | 1…Think it through. Then check your answer.Question
Consider a discrete random variable whose probabilities are given below. The standard deviation of the random variable is ______ (round off to one decimal place).1 2 4 8 0.3 0.1 0.3 0.3 Correct answer
2.7 to 2.9
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1.Calculate the mean (expected value) :2.Calculate :3.Calculate the variance :4.Calculate the standard deviation :Rounding to one decimal place, the standard deviation is 2.8.52
Q52NAT2 marksHardA steel beam supported by three parallel pin-jointed steel rods is shown in the figure. The moment of inertia of the beam is . Take modulus of…Think it through. Then check your answer.Question
A steel beam supported by three parallel pin-jointed steel rods is shown in the figure. The moment of inertia of the beam is . Take modulus of elasticity of steel as . The beam is subjected to uniformly distributed load of , including its self-weight. The axial force (in kN) in the centre rod CD is ______ (round off to one decimal place).
Correct answer
16.3 to 16.6
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To find the axial force in the centre rod CD, we use the principle of superposition and compatibility of displacements.1.Equilibrium Equation:Let , , and be the axial forces in the rods AB, CD, and EF respectively. Due to symmetry, .
Total downward load .
From vertical equilibrium:2.Compatibility Condition:The downward displacement of the beam at the center (point C) must equal the extension of rod CD. This displacement is the sum of the settlement at the ends (extension of rod AB) and the deflection of the beam at the center relative to its ends.
where and are the extensions of rods AB and CD, and is the deflection of the beam at the center relative to its ends.Extensions of rods:
,
,
, Relative beam deflection due to UDL and reaction :
, ,3.Calculation:Substituting the expressions into the compatibility equation:
Substitute :
Rounding to one decimal place, the axial force in rod CD is 16.5 kN.53
Q53NAT2 marksMediumThe figure shows a network diagram for a construction project. The activities A, B, C, D, E, and F are represented by arrows and their durations are in the figure. The total float…Think it through. Then check your answer.Question
The figure shows a network diagram for a construction project. The activities A, B, C, D, E, and F are represented by arrows and their durations are in the figure. The total float available for the activity E in day(s) is equal to _____ (round off to the nearest integer).Correct answer
1 to 1
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1.Identify all paths from start (node 1) to end (node 5):- Path 1: 1-2-4-5, Duration = days
- Path 2: 1-3-4-5, Duration = days
- Path 3: 1-3-5, Duration = days
3.For activity E (node 4 to node 5):- Earliest Start () is the earliest time node 4 can be reached: .
- Latest Finish () is the latest time node 5 can be reached without delaying the project: .
- Total Float () = day.
54
Q54NAT2 marksMediumA reinforced concrete beam has a support section with width of mm and effective depth of mm. The support section is reinforced with bars of mm diameter at the…Think it through. Then check your answer.Question
A reinforced concrete beam has a support section with width of mm and effective depth of mm. The support section is reinforced with bars of mm diameter at the tension side. Two-legged vertical stirrups of mm diameter and Fe415 steel at a spacing of mm are provided as shear reinforcement. Assume that there is no possibility of diagonal compression failure at the section.As per IS 456:2000, the maximum shear resisted by the vertical stirrups (in kN), as per limit state design, is ___________ (round off to one decimal place).Correct answer
283 to 284
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Given:
Width of beam, mm
Effective depth, mm
Stirrups: 2-legged, mm diameter
Area of stirrups, mm
Grade of steel, MPa
Spacing of stirrups, mmAccording to IS 456:2000, the shear resistance of vertical stirrups () is given by:Substituting the values:Rounding off to one decimal place, the maximum shear resisted by the vertical stirrups is kN.55
Q55NAT2 marksHardThe bank of a canal has the profile shown in the figure. The material is a homogeneous clay with a bulk unit weight of kN/m, undrained cohesion of kPa and it is…Think it through. Then check your answer.Question
The bank of a canal has the profile shown in the figure. The material is a homogeneous clay with a bulk unit weight of kN/m, undrained cohesion of kPa and it is fully saturated (). For the trial slip circle shown, the area ABCDEA is m and the centroid is at P. A tension crack (DE) of m deep was also observed. Assume unit weight of water is kN/m and consider m run of the bank for the analysis.Considering the canal is empty and tension crack is completely filled with water, the factor of safety against slope failure of the bank is ______ (round off to two decimal places).
Correct answer
1 to 1.1
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Given:
Bulk unit weight, kN/m
Undrained cohesion, kPa
Area, m
Radius of slip circle, m
Angle of arc,
Centroid distance from vertical through O, m
Tension crack depth, m
Unit weight of water, kN/m1.Resisting Moment ():2.Driving Moment ():Driving moment due to weight of soil ():Driving moment due to water pressure in tension crack ():From the figure, the vertical distance from O to the top of the bank is m. The water pressure acts at from the bottom of the crack.
Lever arm (approximate based on geometry)Total Driving Moment,3.Factor of Safety (FOS):Rounding off to two decimal places, .56
Q56NAT2 marksMediumA designer used plate load test to obtain the value of the bearing capacity factor . A circular plate of 1 m diameter was placed on the surface of a dry sand layer…Think it through. Then check your answer.Question
A designer used plate load test to obtain the value of the bearing capacity factor . A circular plate of 1 m diameter was placed on the surface of a dry sand layer extending very deep beneath the ground. The unit weight of the sand is 16.66 kN/m. The plate is loaded to failure at a pressure of 1500 kPa.Considering Terzaghi’s bearing capacity theory, the bearing capacity factor is ______ (round off to the nearest integer).Correct answer
300 to 300
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For a circular footing on the surface of dry sand (), Terzaghi's ultimate bearing capacity is given by:Given:
kPa
kN/m
m
Substituting the values:Rounding to the nearest integer, .57
Q57NAT2 marksMediumA group pile, with each pile 20 m long and 500 mm in diameter, is installed in a square pattern in a clayey soil, as shown in the figure. The average unconfined…Think it through. Then check your answer.Question
A group pile, with each pile 20 m long and 500 mm in diameter, is installed in a square pattern in a clayey soil, as shown in the figure. The average unconfined compressive strength of the soil is 100 kN/m, and the adhesion factor is 0.8. Neglect the bearing at the tip of the piles. For a group efficiency factor of 1.0, the centre to centre spacing () of the piles (in m) would be ________ (round off to two decimal places).
Correct answer
1.5 to 1.52
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For a pile group in clay, the ultimate capacity is the minimum of the sum of individual capacities and the block capacity. Given group efficiency , we have:Individual pile capacity (neglecting tip bearing):Total capacity of 16 piles:Block capacity:Equating the two:Rounding to two decimal places, m.58
Q58NAT2 marksMediumA 60 cm diameter well completely penetrates a confined aquifer of permeability m/s. The length of the strainer (spanning the entire thickness of the aquifer) is…Think it through. Then check your answer.Question
A 60 cm diameter well completely penetrates a confined aquifer of permeability m/s. The length of the strainer (spanning the entire thickness of the aquifer) is 10 m. The drawdown at the well under steady state pumping is 1.0 m. Assume that the radius of influence for this pumping is 300 m. The discharge from the well (in litres per minute) is ______ (round off to the nearest integer).Correct answer
271 to 273
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Given data:- Diameter of the well, cm Radius, cm m
- Permeability of the aquifer, m/s
- Thickness of the confined aquifer (length of strainer), m
- Drawdown at the well, m
- Radius of influence, m
59
Q59NAT2 marksMediumThe peak of flood hydrograph due to a 3-hour duration storm in a catchment is . The total rainfall depth is . It can be assumed that the…Think it through. Then check your answer.Question
The peak of flood hydrograph due to a 3-hour duration storm in a catchment is . The total rainfall depth is . It can be assumed that the average infiltration loss is . There are no other losses. The base flow is constant at a value of .The peak value of the 3-hour unit hydrograph for this catchment (in ) is ______ (round off to the nearest integer).Correct answer
25 to 25
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1.Calculate Total Infiltration Loss:Duration () =
Infiltration rate () =
Total loss =2.Calculate Effective Rainfall ():Total rainfall () =
3.Calculate Peak of Direct Runoff Hydrograph ():Peak of Flood Hydrograph () =
Base flow () =
4.Calculate Peak of Unit Hydrograph ():60
Q60NAT2 marksHardThe shaft of a 6 m wide gate in the figure will fail at a moment of 3924 kN.m about the hinge P. The maximum value of water depth (in m) that the gate can hold is…Think it through. Then check your answer.Question
The shaft of a 6 m wide gate in the figure will fail at a moment of 3924 kN.m about the hinge P. The maximum value of water depth (in m) that the gate can hold is ________________ (round off to the nearest integer).Note:
Density of water = 1000 kg/m
Acceleration due to gravity = 9.81 m/s
Correct answer
7 to 9
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Given:
Width of gate, m
Failure moment about hinge P, kN.m = N.m
Density of water, kg/m
Acceleration due to gravity, m/sFrom the figure, the gate is inclined with a vertical height of 4 m and a horizontal width of 3 m.
Length of the inclined gate, m.
Let be the angle of the gate with the horizontal. .Let be the depth of water to the hinge P (at the bottom of the gate).
The depth of any element at a distance from the hinge P is .The hydrostatic force on the element is:
The moment of this force about hinge P is:
Integrating from to m:
Setting N.m:
mRounding to the nearest integer, .61
Q61NAT2 marksMediumThe analyses results of a water sample are given below. The non-carbonate hardness of the water (in ) as is ______ (in integer). | Ion | Concentration…Think it through. Then check your answer.Question
The analyses results of a water sample are given below. The non-carbonate hardness of the water (in ) as is ______ (in integer).Other anions were not analysed.Ion Concentration ( as ) Correct answer
50 to 50
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1.Calculate Total Hardness ():as .2.Calculate Total Alkalinity ():as .3.Calculate Carbonate Hardness ():as .4.Calculate Non-Carbonate Hardness ():as .62
Q62NAT2 marksMediumA community generates 1 million litres/day (MLD) of wastewater. This wastewater is treated using activated sludge process (ASP). The working volume of the aeration tank of the ASP…Think it through. Then check your answer.Question
A community generates 1 million litres/day (MLD) of wastewater. This wastewater is treated using activated sludge process (ASP). The working volume of the aeration tank of the ASP is , and the biomass concentration in the tank is . Analyses results showed that a biomass concentration of is present in the treated effluent from the secondary sedimentation tank of the ASP. Sludge wastage from the system is at a rate of with a biomass concentration of . The system is in steady state condition.The biological sludge residence time (BSRT) of the system (in days) is______ (round off to one decimal place).Correct answer
12.3 to 12.7
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The biological sludge residence time (BSRT), denoted as , is given by the formula:Where:- (Volume of aeration tank)
- (Biomass concentration in aeration tank)
- (Influent flow rate)
- (Sludge wastage rate)
- (Biomass concentration in wasted sludge)
- (Effluent flow rate)
- (Biomass concentration in effluent)
63
Q63NAT2 marksHardA settling chamber is used for the removal of discrete particulate matter from air with following conditions. Horizontal velocity of air ; Temperature of air…Think it through. Then check your answer.Question
A settling chamber is used for the removal of discrete particulate matter from air with following conditions. Horizontal velocity of air ; Temperature of air stream ; Specific gravity of particle to be removed ; Chamber length ; Chamber height ; Viscosity of air at ; Acceleration due to gravity ; Density of air at ; Assume the density of water as and Laminar condition exists in the chamber.The minimum size of particle that will be removed with 100% efficiency in the settling chamber (in ) is ______ (round off to one decimal place).Correct answer
21 to 45
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For 100% removal efficiency in a settling chamber, the settling velocity () must satisfy:Where:- (Horizontal velocity)
- (Chamber height)
- (Chamber length)
- (Density of particle)
- (Density of air)
- (Viscosity of air)
- is the particle diameter
64
Q64NAT2 marksMediumOn a two-lane highway, a horizontal curve of radius is provided. The design speed is . If the longest wheelbase of vehicle expected on this highway…Think it through. Then check your answer.Question
On a two-lane highway, a horizontal curve of radius is provided. The design speed is .If the longest wheelbase of vehicle expected on this highway is , then the extra widening required (in m) is ______ (round off to two decimal places).Correct answer
0.63 to 0.66
Turn this into a strength.Explore AI-powered practice and doubt support with Success Tracker.Step-by-step solution
The total extra widening () required on a horizontal curve is the sum of mechanical widening () and psychological widening ():1.Mechanical Widening ():Where:- (Number of lanes)
- (Wheelbase length)
- (Radius of curve)
2.Psychological Widening ():Where:- (Design speed)
3.Total Extra Widening ():Rounding off to two decimal places, we get .65
Q65NAT2 marksMediumIf the Fore Bearing of the lines AB and BC are and , respectively, then the interior angle (in degrees) is ______ (round off to the nearest…Think it through. Then check your answer.Question
If the Fore Bearing of the lines AB and BC are and , respectively, then the interior angle (in degrees) is ______ (round off to the nearest integer).Correct answer
118 to 118
Turn this into a strength.Explore AI-powered practice and doubt support with Success Tracker.Step-by-step solution
Given:
Fore Bearing of AB () =
Fore Bearing of BC () = Step 1: Calculate the Back Bearing of AB ().
Step 2: Calculate the interior angle .
The interior angle is the angle measured between the lines BA and BC. It can be calculated as the difference between the back bearing of the preceding line (BA) and the fore bearing of the succeeding line (BC).
Interior angle
Since is less than , it is the interior angle. If the result were greater than , we would subtract it from to find the interior angle.Therefore, the interior angle is .