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GATE EE 2016 Set 2

All 65 solved GATE EE 2016 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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Questions

65

Paper marks

100

Question formats

2

MCQ · NAT

Revision mode

Self-paced

No timer. Focus on understanding.

Difficulty mixEasy 28Medium 29Hard 8

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65 of 65 questions

General Aptitude (GA)

10
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    Question

    The chairman requested the aggrieved shareholders to _________________ him.
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    Question

    Identify the correct spelling out of the given options:
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    Question

    Pick the odd one out in the following:
    13, 23, 33, 43, 53
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    Question

    R2D2 is a robot. R2D2 can repair aeroplanes. No other robot can repair aeroplanes.
    Which of the following can be logically inferred from the above statements?
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    Question

    If 9y6=3|9y-6| = 3, then y24y/3y^2 - 4y/3 is
    .
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    Question

    The following graph represents the installed capacity for cement production (in tonnes) and the actual production (in tonnes) of nine cement plants of a cement company. Capacity utilization of a plant is defined as ratio of actual production of cement to installed capacity. A plant with installed capacity of at least 200 tonnes is called a large plant and a plant with lesser capacity is called a small plant. The difference between total production of large plants and small plants, in tonnes is
    ____.
    Bar chart showing installed capacity and actual production for nine cement plants
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    Question

    A poll of students appearing for masters in engineering indicated that 60 % of the students believed that mechanical engineering is a profession unsuitable for women. A research study on women with masters or higher degrees in mechanical engineering found that 99 % of such women were successful in their professions.
    Which of the following can be logically inferred from the above paragraph?
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    Question

    Sourya committee had proposed the establishment of Sourya Institutes of Technology (SITs) in line with Indian Institutes of Technology (IITs) to cater to the technological and industrial needs of a developing country.
    Which of the following can be logically inferred from the above sentence?
    Based on the proposal,
    (i)
    In the initial years, SIT students will get degrees from IIT.
    (ii)
    SITs will have a distinct national objective.
    (iii)
    SIT like institutions can only be established in consultation with IIT.
    (iv)
    SITs will serve technological needs of a developing country.
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    Question

    Shaquille O' Neal is a 60% career free throw shooter, meaning that he successfully makes 60 free throws out of 100 attempts on average. What is the probability that he will successfully make exactly 6 free throws in 10 attempts?
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    Question

    The numeral in the units position of 211870+146127×3424211^{870} + 146^{127} \times 3^{424} is _____.
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Electrical Engineering

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    Question

    The output expression for the Karnaugh map shown below is

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    Question

    The circuit shown below is an example of a

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    Question

    The following figure shows the connection of an ideal transformer with primary to secondary turns ratio of 1:1001:100. The applied primary voltage is 100 V100\text{ V} (rms), 50 Hz50\text{ Hz}, AC. The rms value of the current II, in ampere, is __________.

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    Question

    Consider a causal LTI system characterized by differential equation dy(t)dt+16y(t)=3x(t)\frac{dy(t)}{dt} + \frac{1}{6} y(t) = 3x(t). The response of the system to the input x(t)=3et3u(t)x(t) = 3e^{-\frac{t}{3}} u(t), where u(t)u(t) denotes the unit step function, is
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    Question

    Suppose the maximum frequency in a band-limited signal x(t)x(t) is 5 kHz5\text{ kHz}. Then, the maximum frequency in x(t)cos(2000πt)x(t) \cos(2000\pi t), in kHz\text{kHz}, is ________.
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    Question

    Consider the function f(z)=z+zf(z) = z + z^* where zz is a complex variable and zz^* denotes its complex conjugate. Which one of the following is TRUE?
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    Question

    A 3×33 \times 3 matrix PP is such that, P3=PP^3 = P. Then the eigenvalues of PP are
    1. A.
      1, 1, -1
    2. B.
      1, 0.5 + j0.866, 0.5 - j0.866
    3. C.
      1, -0.5 + j0.866, -0.5 - j0.866
    4. D.
      0, 1, -1

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    Question

    The solution of the differential equation, for t>0t > 0, y(t)+2y(t)+y(t)=0y''(t) + 2y'(t) + y(t) = 0 with initial conditions y(0)=0y(0) = 0 and y(0)=1y'(0) = 1, is (u(t)u(t) denotes the unit step function),
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    Question

    The value of the line integral C(2xy2dx+2x2ydy+dz)\int_C (2xy^2 dx + 2x^2y dy + dz) along a path joining the origin (0,0,0)(0, 0, 0) and the point (1,1,1)(1, 1, 1) is
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    Question

    Let f(x)f(x) be a real, periodic function satisfying f(x)=f(x)f(-x) = -f(x). The general form of its Fourier series representation would be
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    Question

    A resistance and a coil are connected in series and supplied from a single phase, 100 V100\text{ V}, 50 Hz50\text{ Hz} ac source as shown in the figure below. The rms values of plausible voltages across the resistance (VRV_R) and coil (VCV_C) respectively, in volts, are
    A series circuit consisting of an AC source Vs, a resistor with voltage VR, and a coil with voltage VC.
    1. A.
      65, 35
    2. B.
      50, 50
    3. C.
      60, 90
    4. D.
      60, 80

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    Question

    The voltage (VV) and current (AA) across a load are as follows.
    v(t)=100sin(ωt)v(t) = 100 \sin(\omega t),
    i(t)=10sin(ωt60)+2sin(3ωt)+5sin(5ωt)i(t) = 10 \sin(\omega t - 60^\circ) + 2 \sin(3\omega t) + 5 \sin(5\omega t).
    The average power consumed by the load, in W, is ___________.
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    Question

    A power system with two generators is shown in the figure below. The system (generators, buses and transmission lines) is protected by six overcurrent relays R1R_1 to R6R_6. Assuming a mix of directional and nondirectional relays at appropriate locations, the remote backup relays for R4R_4 are
    Single-line diagram of a power system with two generators S1 and S2, three buses, and six overcurrent relays R1 through R6.
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    Question

    A power system has 100 buses including 10 generator buses. For the load flow analysis using Newton-Raphson method in polar coordinates, the size of the Jacobian is
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    Question

    The inductance and capacitance of a 400 kV400\text{ kV}, three-phase, 50 Hz50\text{ Hz} lossless transmission line are 1.6 mH/km/phase1.6\text{ mH/km/phase} and 10 nF/km/phase10\text{ nF/km/phase} respectively. The sending end voltage is maintained at 400 kV400\text{ kV}. To maintain a voltage of 400 kV400\text{ kV} at the receiving end, when the line is delivering 300 MW300\text{ MW} load, the shunt compensation required is
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    Question

    A parallel plate capacitor filled with two dielectrics is shown in the figure below. If the electric field in the region A is 4 kV/cm4\text{ kV/cm}, the electric field in the region B, in kV/cm\text{kV/cm}, is

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    Question

    A 50 MVA, 10 kV, 50 Hz, star-connected, unloaded three-phase alternator has a synchronous reactance of 1 p.u. and a sub-transient reactance of 0.2 p.u. If a 3-phase short circuit occurs close to the generator terminals, the ratio of initial and final values of the sinusoidal component of the short circuit current is ________.
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    Question

    Consider a linear time-invariant system with transfer function H(s)=1s+1H(s) = \frac{1}{s + 1}If the input is cos(t)\cos(t) and the steady state output is Acos(t+α)A \cos(t + \alpha), then the value of AA is _________.
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    Question

    A three-phase diode bridge rectifier is feeding a constant DC current of 100 A to a highly inductive load. If three-phase, 415 V, 50 Hz AC source is supplying to this bridge rectifier then the rms value of the current in each diode, in ampere, is _____________.
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    Question

    A buck-boost DC-DC converter, shown in the figure below, is used to convert 24 V battery voltage to 36 V DC voltage to feed a load of 72 W. It is operated at 20 kHz with an inductor of 2 mH and output capacitor of 1000 µF. All devices are considered to be ideal. The peak voltage across the solid-state switch (S), in volt, is ____________.

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    Question

    For the network shown in the figure below, the frequency (in rad/s) at which the maximum phase lag occurs is, ___________.

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    Question

    The direction of rotation of a single-phase capacitor run induction motor is reversed by
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    Question

    In the circuit shown below, the voltage and current sources are ideal. The voltage (VoutV_{out}) across the current source, in volts, is

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    Question

    The graph associated with an electrical network has 7 branches and 5 nodes. The number of independent KCL equations and the number of independent KVL equations, respectively, are
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    Question

    Two electrodes, whose cross-sectional view is shown in the figure below, are at the same potential. The maximum electric field will be at the point
    Cross-sectional view of two electrodes with points A, B, C on the surface of the left electrode and point D inside it.
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    Question

    The Boolean expression (a+bˉ+c+dˉ)+(b+cˉ)\overline{(a + \bar{b} + c + \bar{d}) + (b + \bar{c})} simplifies to
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    Question

    For the circuit shown below, taking the opamp as ideal, the output voltage VoutV_{out} in terms of the input voltages V1,V2V_1, V_2 and V3V_3 is
    An op-amp circuit with $V_1$ and $V_2$ connected to the non-inverting terminal through $1\text{ k}\Omega$ and $4\text{ k}\Omega$ resistors respectively, and $V_3$ connected to the inverting terminal through a $1\text{ k}\Omega$ resistor with a $9\text{ k}\Omega$ feedback resistor.
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    Question

    Let x1(t)X1(ω)x_1(t) \leftrightarrow X_1(\omega) and x2(t)X2(ω)x_2(t) \leftrightarrow X_2(\omega) be two signals whose Fourier Transforms are as shown in the figure below. In the figure, h(t)=e2th(t) = e^{-2|t|} denotes the impulse response.
    Fourier transforms $X_1(\omega)$ and $X_2(\omega)$ and a system block diagram
    For the system shown above, the minimum sampling rate required to sample y(t)y(t), so that y(t)y(t) can be uniquely reconstructed from its samples, is
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    Question

    The value of the integral 2(sin2πtπt)dt2 \int_{-\infty}^{\infty} \left( \frac{\sin 2\pi t}{\pi t} \right) dt is equal to
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    Question

    Let y(x)y(x) be the solution of the differential equation d2ydx24dydx+4y=0\frac{d^2y}{dx^2} - 4 \frac{dy}{dx} + 4y = 0 with initial conditions y(0)=0y(0) = 0 and dydxx=0=1\frac{dy}{dx}\bigg|_{x=0} = 1. Then the value of y(1)y(1) is _________.
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    Question

    The line integral of the vector field F=5xzi^+(3x2+2y)j^+x2zk^\vec{F} = 5xz \hat{i} + (3x^2 + 2y) \hat{j} + x^2z \hat{k} along a path from (0,0,0)(0,0,0) to (1,1,1)(1,1,1) parametrized by (t,t2,t)(t, t^2, t) is _____.
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    Question

    Let P=[3113]P = \begin{bmatrix} 3 & 1 \\ 1 & 3 \end{bmatrix}. Consider the set SS of all vectors (xy)\begin{pmatrix} x \\ y \end{pmatrix} such that a2+b2=1a^2 + b^2 = 1 where (ab)=P(xy)\begin{pmatrix} a \\ b \end{pmatrix} = P \begin{pmatrix} x \\ y \end{pmatrix}. Then SS is
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    Question

    Let the probability density function of a random variable, X, be given as:
    fX(x)=32e3xu(x)+ae+4xu(x)f_X(x) = \frac{3}{2}e^{-3x}u(x) + ae^{+4x}u(-x)
    where u(x) is the unit step function.
    Then the value of 'a' and Prob{X \le 0}, respectively, are
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    Question

    The driving point input impedance seen from the source VsV_s of the circuit shown below, in Ω\Omega, is ______.
    Circuit diagram with a source $V_s$, resistors, and a dependent current source
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    Question

    The zz-parameters of the two port network shown in the figure are z11=40Ωz_{11} = 40 \Omega, z12=60Ωz_{12} = 60 \Omega, z21=80Ωz_{21} = 80 \Omega and z22=100Ωz_{22} = 100 \Omega. The average power delivered to RL=20ΩR_L = 20 \Omega, in watts, is _______.

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    Question

    In the balanced 3-phase, 50 Hz, circuit shown below, the value of inductance (LL) is 10 mH. The value of the capacitance (CC) for which all the line currents are zero, in millifarads, is ___________.
    3-phase circuit with delta-connected inductors and star-connected capacitors
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    Question

    In the circuit shown below, the initial capacitor voltage is 4 V. Switch S1S_1 is closed at t=0t = 0. The charge (in μ\mu C) lost by the capacitor from t=25μst = 25 \mu s to t=100μst = 100 \mu s is ____________.

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    Question

    The single line diagram of a balanced power system is shown in the figure. The voltage magnitude at the generator internal bus is constant and 1.0 p.u. The p.u. reactances of different components in the system are also shown in the figure. The infinite bus voltage magnitude is 1.0 p.u. A three phase fault occurs at the middle of line 2.
    The ratio of the maximum real power that can be transferred during the pre-fault condition to the maximum real power that can be transferred under the faulted condition is _________.

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    Question

    The open loop transfer function of a unity feedback control system is given byG(s)=K(s+1)s(1+Ts)(1+2s),K>0,T>0.G(s) = \frac{K(s + 1)}{s(1 + Ts)(1 + 2s)}, \quad K > 0, T > 0.The closed loop system will be stable if,
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    Question

    At no load condition, a 3-phase, 50 Hz, lossless power transmission line has sending-end and receiving-end voltages of 400 kV and 420 kV respectively. Assuming the velocity of traveling wave to be the velocity of light, the length of the line, in km, is ____________.
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    Question

    The power consumption of an industry is 500 kVA, at 0.8 p.f. lagging. A synchronous motor is added to raise the power factor of the industry to unity. If the power intake of the motor is 100 kW, the p.f. of the motor is _____________
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    Question

    The flux linkage (λ\lambda) and current (ii) relation for an electromagnetic system is λ=(i)/g\lambda = (\sqrt{i})/g. When i=2i = 2 A and gg (air-gap length) =10= 10 cm, the magnitude of mechanical force on the moving part, in N, is ________.
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    Question

    The starting line current of a 415 V, 3-phase, delta connected induction motor is 120 A, when the rated voltage is applied to its stator winding. The starting line current at a reduced voltage of 110 V, in ampere, is _________.
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    Question

    A single-phase, 2 kVA, 100/200 V transformer is reconnected as an auto-transformer such that its kVA rating is maximum. The new rating, in kVA, is ______.
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    Question

    A full-bridge converter supplying an RLE load is shown in figure. The firing angle of the bridge converter is 120º. The supply voltage vm(t)=200πsin(100πt)v_m(t) = 200\pi \sin (100\pi t) V, R=20 Ω\Omega, E=800 V. The inductor L is large enough to make the output current ILI_L a smooth dc current. Switches are lossless. The real power fed back to the source, in kW, is __________.

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    Question

    A three-phase Voltage Source Inverter (VSI) as shown in the figure is feeding a delta connected resistive load of 30 Ω/phase30\ \Omega/\text{phase}. If it is fed from a 600 V600\ \text{V} battery, with 180180^\circ conduction of solid-state devices, the power consumed by the load, in kW, is __________.
    Three-phase VSI circuit diagram feeding a delta-connected resistive load
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    Question

    A DC-DC boost converter, as shown in the figure below, is used to boost 360 V360\ \text{V} to 400 V400\ \text{V}, at a power of 4 kW4\ \text{kW}. All devices are ideal. Considering continuous inductor current, the rms current in the solid state switch (S), in ampere, is _________.
    DC-DC boost converter circuit diagram
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    Question

    A single-phase bi-directional voltage source converter (VSC) is shown in the figure below. All devices are ideal. It is used to charge a battery at 400 V400\ \text{V} with power of 5 kW5\ \text{kW} from a source Vs=220 V (rms)V_s = 220\ \text{V (rms)}, 50 Hz50\ \text{Hz} sinusoidal AC mains at unity p.f. If its AC side interfacing inductor is 5 mH5\ \text{mH} and the switches are operated at 20 kHz20\ \text{kHz}, then the phase shift (δ\delta) between AC mains voltage (VsV_s) and fundamental AC rms VSC voltage (VC1V_{C1}), in degree, is _________.

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    Consider a linear time invariant system x˙=Ax\dot{x} = Ax, with initial condition x(0)x(0) at t=0t = 0. Suppose α\alpha and β\beta are eigenvectors of (2×2)(2 \times 2) matrix AA corresponding to distinct eigenvalues λ1\lambda_1 and λ2\lambda_2 respectively. Then the response x(t)x(t) of the system due to initial condition x(0)=αx(0) = \alpha is
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    Question

    A second-order real system has the following properties:
    a) the damping ratio ζ=0.5\zeta = 0.5 and undamped natural frequency ωn=10\omega_n = 10 rad/s,
    b) the steady state value of the output, to a unit step input, is 1.02.
    The transfer function of the system is
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    Question

    Three single-phase transformers are connected to form a delta-star three-phase transformer of 110 kV/ 11 kV. The transformer supplies at 11 kV a load of 8 MW at 0.8 p.f. lagging to a nearby plant. Neglect the transformer losses. The ratio of phase currents in delta side to star side is
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    The gain at the breakaway point of the root locus of a unity feedback system with open loop transfer function G(s)=Ks(s1)(s4)G(s) = \frac{Ks}{(s-1)(s-4)} is
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    Two identical unloaded generators are connected in parallel as shown in the figure. Both the generators are having positive, negative and zero sequence impedances of j0.4j0.4 p.u., j0.3j0.3 p.u. and j0.15j0.15 p.u., respectively. If the pre-fault voltage is 11 p.u., for a line-to-ground (L-G) fault at the terminals of the generators, the fault current, in p.u., is __________.
    Two identical generators connected in parallel to a common bus, with neutral grounding shown for both.
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    An energy meter, having meter constant of 12001200 revolutions/kWh, makes 2020 revolutions in 3030 seconds for a constant load. The load, in kW, is _____________.
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    A rotating conductor of 1 m1\text{ m} length is placed in a radially outward (about the zz-axis) magnetic flux density (BB) of 1 Tesla1\text{ Tesla} as shown in figure below. Conductor is parallel to and at 1 m1\text{ m} distance from the zz-axis. The speed of the conductor in r.p.m. required to induce a voltage of 1 V1\text{ V} across it, should be __________.

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