GATE CE 2026 Set 1 — Question 62
Go beyond PYQs with Success TrackerAI-powered personalised practice and doubt support. Unlimited practice on eligible plans; AI usage limits apply.NAT+2 / -0MediumDifferential LevellingLevellingGeomatics Engineering
Geomatics Engineering → Levelling → Differential Levelling
Last updated
Question
The following consecutive readings (in m) were taken with a dumpy level and a levelling staff at a common interval of 20 m:0.385; 1.030; 1.925; 2.825; 3.730; 4.850; 1.045; 2.005; 3.330; 4.580The dumpy level was shifted after taking the sixth reading.The gradient (in %) of the ground between the first and the last location of the reading is ______ (in integer).
Correct answer
5 to 5
Solution
1.Identify Back Sights (BS) and Fore Sights (FS):
- The level was shifted after the 6th reading.
- Readings: 0.385 (BS1), 1.030 (IS), 1.925 (IS), 2.825 (IS), 3.730 (IS), 4.850 (FS1).
- After shift: 1.045 (BS2), 2.005 (IS), 3.330 (IS), 4.580 (FS2).
(The negative sign indicates a fall in the ground).
3.Calculate Total Horizontal Distance:
- There are 10 readings, but the 6th and 7th readings are at the same point (change point).
- Total number of points = 9.
- Total distance = .
The gradient is 5.
Continue learning with Success Tracker
A step still unclear? Work through it with support
Use Success Tracker to ask about the reasoning, then try another GATE CE question to check your understanding.
AI-powered practice· Unlimited practice on eligible plans
- PYQs with solutions
- Attempt available previous-year questions, then compare your reasoning with the worked solution. Coverage varies by stream.
- Practice that adapts
- Choose a topic, work on weaker areas and bookmark questions to revisit. Your attempts feed your progress tracking.
- AI doubt support
- Ask follow-up questions about a step or concept while practising, instead of stopping at the final answer.
Unlimited practice is available on eligible plans. Free practice and AI usage have limits; check the current plan allowances before choosing.
This page stays readable without an account. AI responses can be wrong; check them against the solution and source material.
More questions on Levelling
2026 Set 1 Q20The Whole Circle Bearing (WCB) of line is . The length of is 100 m. The…2026 Set 2 Q26Which one of the following statements is TRUE with respect to levelling survey?2026 Set 1 Q34A 30 m long tape is standardized at 25 C. It was used to measure the length of a line which…2026 Set 2 Q35A tourist visiting a city holds a map prepared at a scale of . The tourist measures the…2026 Set 1 Q35The height of the plane of collimation of a levelling instrument is 100.000 m from a datum. The…