Electrical Engineering GATE 2016 Set-1 Questions with Answer

Ques 1 Analog Electronics


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 the current gain β is ________.


19 is the correct answer.


Ques 2 Circuit Theory


RA and RB are the input resistances of circuits as shown below. The circuits extend infinitely in the direction shown. Which one of the following statements is TRUE?

A

RA = RB

B

RA = RB = 0

C

RA < RB

D

RB = RA / (1+RA)



Ques 3 Circuit Theory


In the portion of a circuit shown, if the heat generated in 5 Ω resistance is 10 calories per second, then heat generated by the 4 Ω resistance, in calories per second, is ________.


2 is the correct answer.


Ques 4 Circuit Theory


In the given circuit, the current supplied by the battery, in ampere, is ________.


0.5 is the correct answer.


Ques 5 Circuit Theory


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

A

nL

B

n2L

C

n/L

D

n2/L



Ques 6 Circuit Theory


In the circuit shown, switch S2 has been closed for a long time. At time t=0 switch S1 is closed. At t=0+, the rate of change of current through the inductor, in amperes per second, is ________.


2 is the correct answer.


Ques 7 Circuit Theory


In the circuit shown below, the supply voltage is 10 sin(1000t) volts. The peak value of the steady state current through the 1 Ω resistor, in amperes, is ________.


1 is the correct answer.


Ques 8 Circuit Theory


The circuit below is excited by a sinusoidal source. The value of R, in Ω, for which the admittance of the circuit becomes a pure conductance at all frequencies is ________.


14.14 is the correct answer.


Ques 9 Circuit Theory


In the circuit shown below, the node voltage VA is ________ V.


11.42 is the correct answer.


Ques 10 Control Systems


The transfer function of a system is Y(s)/R(s) = s/(s+2). The steady state output y(t) is Acos(2t+φ) for the input cos(2t). The values of A and φ, respectively are

A

1/√2, -45°

B

1/√2, +45°

C

√2, -45°

D

√2, +45°



Ques 11 Control Systems


The phase cross-over frequency of the transfer function G(s) = 100/(s+1)3 in rad/s is

A

√3

B

1/√3

C

3

D

3√3



Ques 12 Control Systems


Consider the following asymptotic Bode magnitude plot (ω is in rad/s). Which one of the following transfer functions is best represented by the above Bode magnitude plot?

A

2s/((1+0.5s)(1+0.25s)2)

B

4(1+0.5s)/(s(1+0.25s))

C

2s/((1+2s)(1+4s))

D

4s/((1+2s)(1+4s)2)



Ques 13 Control Systems


Consider the following state-space representation of a linear time-invariant system.

The value of y(t) for t = loge2 is ________.


6 is the correct answer.


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