GATE EE topic:electrical-engineering PYQs & Answers — Page 37

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Questions 361–370 of 715. Imported answers require independent review unless marked reviewed.

Topic practice 715 questionsPage 37 of 72

In the open interval

, the polynomial

has

Your answerChoose one option.

two real roots

one real root

three real roots

no real roots

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Suppose the probability that a coin toss shows “head” is

, where

. The coin is tossed repeatedly until the first “head” appears. The expected number of tosses required is

Your answerChoose one option.

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Let

and

be the vertices of a rectangle

in the complex plane. Assuming that

is traversed in counter-clockwise direction, the value of the contour integral

Your answerChoose one option.

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In the circuit, switch ‘S’ is in the closed position for a very long time. If the switch is opened at time

, then

in amperes, for

Diagram for Electrical Engineering question 29

Your answerChoose one option.

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The input impedance,

, for the network shown is

Diagram for Electrical Engineering question 30

Your answerChoose one option.

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The causal signal with z-transform

is (

is the unit step signal)

Your answerChoose one option.

(n+1)

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Let

be an even function, i.e.

for all

. Let the Fourier transform of

be defined as

. Suppose

for all

, and

. Then

Your answerChoose one option.

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In a single-phase transformer, the total iron loss is 2500 W at nominal voltage of 440 V and frequency 50 Hz. The total iron loss is 850 W at 220 V and 25 Hz. Then, at nominal voltage and frequency, the hysteresis loss and eddy current loss respectively are

Your answerChoose one option.

1600 W and 900 W

900 W and 1600 W

250 W and 600 W

600 W and 250 W

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In the figure shown, self-impedances of the two transmission lines are 1.5j p.u each, and

p.u is the mutual impedance. Bus voltages shown in the figure are in p.u. Given that

, the maximum steady-state real power that can be transferred in p.u from Bus-1 to Bus-2 is

Diagram for Electrical Engineering question 34

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A 3-Bus network is shown. Consider generators as ideal voltage sources. If rows 1, 2 and 3 of the

matrix correspond to Bus 1, 2 and 3, respectively, then

of the network is

Diagram for Electrical Engineering question 35

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GATE EE topic:electrical-engineering PYQs

Question 26

Question 27

Question 28

Question 29

Question 30

Question 31

Question 32

Question 33

Question 34

Question 35