The GATE Grind

GATE 2016 EE – Previous Year Questions with Solutions

All 65 questions of GATE 2016 EE with answers and explanations. Read each question, then practise it by topic or as a full paper.

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  1. Question 1 (1 mark, Multiple choice) – The man who is now Municipal Commissioner worked as .
  2. Question 2 (1 mark, Multiple choice) – Nobody knows how the Indian cricket team is going to cope with the difficult and seamer-friendly wickets in Australia. Choose the option which is…
  3. Question 3 (1 mark, Multiple choice) – Find the odd one in the following group of words. mock, deride, praise, jeer
  4. Question 4 (1 mark, Multiple choice) – Pick the odd one from the following options.
  5. Question 5 (1 mark, Multiple choice) – In a quadratic function, the value of the product of the roots (, ) is 4. Find the value of n + n-n + -n
  6. Question 6 (2 marks, Multiple choice) – Among 150 faculty members in an institute, 55 are connected with each other through Facebook® and WhatsApp® accounts, 85 are connected through…
  7. Question 7 (2 marks, Multiple choice) – Computers were invented for performing only high-end useful computations. However, it is no understatement that they have taken over our world today.…
  8. Question 8 (2 marks, Multiple choice) – All hill-stations have a lake. Ooty has two lakes. Which of the statement(s) below is/are logically valid and can be inferred from the above…
  9. Question 9 (2 marks, Multiple choice) – In a 2 4 rectangle grid shown below, each cell is a rectangle. How many rectangles can be observed in the grid?
  10. Question 10 (2 marks, Multiple choice) – Choose the correct expression for f(x) given in the graph. [Graph: a straight line rises from (-3, -2) to a peak at (1, 2), then falls in a straight…
  11. Question 11 (1 mark, Numerical answer) – The maximum value attained by the function f(x) = x(x - 1)(x - 2) in the interval [1, 2] is .
  12. Question 12 (1 mark, Numerical answer) – Consider a 3 3 matrix with every element being equal to 1. Its only non-zero eigenvalue is .
  13. Question 13 (1 mark, Multiple choice) – The Laplace Transform of f(t) = e2t (5t) u(t) is
  14. Question 14 (1 mark, Multiple choice) – A function y(t), such that y(0) = 1 and y(1) = 3e-1, is a solution of the differential equation d2 ydt2 + 2dydt + y = 0. Then y(2) is
  15. Question 15 (1 mark, Multiple choice) – The value of the integral C 2z + 5(z - 12)(z2 - 4z + 5) \, dz over the contour z = 1, taken in the anti-clockwise direction, would be
  16. Question 16 (1 mark, Multiple choice) – The transfer function of a system is Y(s)R(s) = ss + 2. The steady state output y(t) is A (2t + ) for the input (2t). The values of A and ,…
  17. Question 17 (1 mark, Multiple choice) – The phase cross-over frequency of the transfer function G(s) = 100(s + 1)3 in rad/s is
  18. Question 18 (1 mark, Multiple choice) – Consider a continuous-time system with input x(t) and output y(t) given by y(t) = x(t) (t) This system is
  19. Question 19 (1 mark, Multiple choice) – The value of -+ e-t (2t - 2) \, dt, where (t) is the Dirac delta function, is
  20. Question 20 (1 mark, Multiple choice) – A temperature in the range of -40° C to 55° C is to be measured with a resolution of 0.1° C. The minimum number of ADC bits required to get a matching…
  21. Question 21 (1 mark, Multiple choice) – Consider the following circuit which uses a 2-to-1 multiplexer as shown in the figure below. The Boolean expression for output F in terms of A and B…
  22. Question 22 (1 mark, Numerical answer) – A transistor circuit is given below. The Zener diode breakdown voltage is 5.3 V as shown. Take base to emitter voltage drop to be 0.6 V. The value of…
  23. Question 23 (1 mark, Multiple choice) – In cylindrical coordinate system, the potential produced by a uniform ring charge is given by = f(r, z), where f is a continuous function of r and z.…
  24. Question 24 (1 mark, Numerical answer) – A soft-iron toroid is concentric with a long straight conductor carrying a direct current I. If the relative permeability r of soft-iron is 100, the…
  25. Question 25 (1 mark, Multiple choice) – R A and R B are the input resistances of circuits as shown below. The circuits extend infinitely in the direction shown. Which one of the following…
  26. Question 26 (1 mark, Multiple choice) – In a constant V/f induction motor drive, the slip at the maximum torque
  27. Question 27 (1 mark, Numerical answer) – In the portion of a circuit shown, if the heat generated in 5\ resistance is 10 calories per second, then heat generated by the 4\ resistance, in…
  28. Question 28 (1 mark, Numerical answer) – In the given circuit, the current supplied by the battery, in ampere, is .
  29. Question 29 (1 mark, Multiple choice) – In a 100 bus power system, there are 10 generators. In a particular iteration of Newton Raphson load flow technique (in polar coordinates), two of the…
  30. Question 30 (1 mark, Numerical answer) – The magnitude of three-phase fault currents at buses A and B of a power system are 10 pu and 8 pu, respectively. Neglect all resistances in the system…
  31. Question 31 (1 mark, Multiple choice) – Consider a system consisting of a synchronous generator working at a lagging power factor, a synchronous motor working at an overexcited condition and…
  32. Question 32 (1 mark, Numerical answer) – A buck converter, as shown in Figure (a) below, is working in steady state. The output voltage and the inductor current can be assumed to be ripple…
  33. Question 33 (1 mark, Numerical answer) – A steady dc current of 100 A is flowing through a power module (S, D) as shown in Figure (a). The V-I characteristics of the IGBT (S) and the diode…
  34. Question 34 (1 mark, Multiple choice) – A 4-pole, lap-connected, separately excited dc motor is drawing a steady current of 40 A while running at 600 rpm. A good approximation for the…
  35. Question 35 (1 mark, Multiple choice) – If an ideal transformer has an inductive load element at port 2 as shown in the figure below, the equivalent inductance at port 1 is
  36. Question 36 (2 marks, Numerical answer) – Candidates were asked to come to an interview with 3 pens each. Black, blue, green and red were the permitted pen colours that the candidate could…
  37. Question 37 (2 marks, Numerical answer) – Let S = n=0 nn where < 1. The value of in the range 0 < < 1, such that S = 2 is .
  38. Question 38 (2 marks, Multiple choice) – Let the eigenvalues of a 2 2 matrix A be 1, -2 with eigenvectors x 1 and x 2 respectively. Then the eigenvalues and eigenvectors of the matrix A2 - 3A…
  39. Question 39 (2 marks, Multiple choice) – Let A be a 4 3 real matrix with rank 2. Which one of the following statement is TRUE?
  40. Question 40 (2 marks, Multiple choice) – Consider the following asymptotic Bode magnitude plot ( is in rad/s). [Figure: A Bode magnitude plot. The slope is +20 dB/dec, crossing 0 dB at = 0.5,…
  41. Question 41 (2 marks, Numerical answer) – Consider the following state-space representation of a linear time-invariant system. x(t) = bmatrix 1 & 0 \\ 0 & 2 bmatrix x(t), y(t) = cT x(t), c =…
  42. Question 42 (2 marks, Multiple choice) – Loop transfer function of a feedback system is G(s)H(s) = s + 3s2(s - 3). Take the Nyquist contour in the clockwise direction. Then, the Nyquist plot…
  43. Question 43 (2 marks, Numerical answer) – Given the following polynomial equation s3 + 5.5 s2 + 8.5 s + 3 = 0, the number of roots of the polynomial, which have real parts strictly less than…
  44. Question 44 (2 marks, Multiple choice) – Suppose x 1(t) and x 2(t) have the Fourier transforms as shown below. [Figure: X 1(j) is real and made of three triangles: height 0.3 over from -1 to…
  45. Question 45 (2 marks, Multiple choice) – The output of a continuous-time, linear time-invariant system is denoted by T\x(t)\ where x(t) is the input signal. A signal z(t) is called…
  46. Question 46 (2 marks, Multiple choice) – The current state Q A Q B of a two JK flip-flop system is 00. Assume that the clock rise-time is much smaller than the delay of the JK flip-flop. The…
  47. Question 47 (2 marks, Multiple choice) – A 2-bit flash Analog to Digital Converter (ADC) is given below. The input is 0 V IN 3 Volts. The expression for the LSB of the output B 0 as a Boolean…
  48. Question 48 (2 marks, Multiple choice) – Two electric charges q and -2q are placed at (0, 0) and (6, 0) on the x-y plane. The equation of the zero equipotential curve in the x-y plane is
  49. Question 49 (2 marks, Numerical answer) – In the circuit shown, switch S 2 has been closed for a long time. At time t = 0 switch S 1 is closed. At t = 0+, the rate of change of current through…
  50. Question 50 (2 marks, Numerical answer) – A three-phase cable is supplying 800 kW and 600 kVAr to an inductive load. It is intended to supply an additional resistive load of 100 kW through the…
  51. Question 51 (2 marks, Numerical answer) – A 30 MVA, 3-phase, 50 Hz, 13.8 kV, star-connected synchronous generator has positive, negative and zero sequence reactances, 15%, 15% and 5%…
  52. Question 52 (2 marks, Multiple choice) – If the star side of the star-delta transformer shown in the figure is excited by a negative sequence voltage, then
  53. Question 53 (2 marks, Multiple choice) – A single-phase thyristor-bridge rectifier is fed from a 230 V, 50 Hz, single-phase AC mains. If it is delivering a constant DC current of 10 A, at…
  54. Question 54 (2 marks, Numerical answer) – The switches T1 and T2 in Figure (a) are switched in a complementary fashion with sinusoidal pulse width modulation technique. The modulating voltage…
  55. Question 55 (2 marks, Numerical answer) – The voltage (v s) across and the current (i s) through a semiconductor switch during a turn-ON transition are shown in figure. The energy dissipated…
  56. Question 56 (2 marks, Numerical answer) – A single-phase 400 V, 50 Hz transformer has an iron loss of 5000 W at the rated condition. When operated at 200 V, 25 Hz, the iron loss is 2000 W.…
  57. Question 57 (2 marks, Numerical answer) – A DC shunt generator delivers 45 A at a terminal voltage of 220 V. The armature and the shunt field resistances are 0.01 and 44 respectively. The…
  58. Question 58 (2 marks, Numerical answer) – A three-phase, 50 Hz salient-pole synchronous motor has a per-phase direct-axis reactance (X d) of 0.8 pu and a per-phase quadrature-axis reactance (X…
  59. Question 59 (2 marks, Multiple choice) – A single-phase, 22 kVA, 2200 V/ 220 V, 50 Hz, distribution transformer is to be connected as an auto-transformer to get an output voltage of 2420 V.…
  60. Question 60 (2 marks, Multiple choice) – A single-phase full-bridge voltage source inverter (VSI) is fed from a 300 V battery. A pulse of 120° duration is used to trigger the appropriate…
  61. Question 61 (2 marks, Numerical answer) – A single-phase transmission line has two conductors each of 10 mm radius. These are fixed at a center-to-center distance of 1 m in a horizontal plane.…
  62. Question 62 (2 marks, Numerical answer) – In the circuit shown below, the supply voltage is 10(1000t) volts. The peak value of the steady state current through the 1 resistor, in amperes, is .
  63. Question 63 (2 marks, Numerical answer) – A dc voltage with ripple is given by v(t) = [100 + 10( t) - 5(3 t)] volts. Measurements of this voltage v(t), made by moving-coil and moving-iron…
  64. Question 64 (2 marks, Numerical answer) – The circuit below is excited by a sinusoidal source. The value of R, in , for which the admittance of the circuit becomes a pure conductance at all…
  65. Question 65 (2 marks, Numerical answer) – In the circuit shown below, the node voltage V A is V.