GATE EE purpose:exam-prep PYQs & Answers — Page 9

Questions 81–90 of 715. Imported answers require independent review unless marked reviewed.

Topic practice 715 questionsPage 9 of 72

Which one of the following statements is true about the small signal voltage gain of a MOSFET based single stage amplifier?

Your answerChoose one option.

Common source and common gate amplifiers are both inverting amplifiers

Common source and common gate amplifiers are both non-inverting amplifiers

Common source amplifier is inverting and common gate amplifier is non-inverting amplifier

Common source amplifier is non-inverting and common gate amplifier is inverting amplifier

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Assuming ideal op-amps, the circuit represents a

Diagram for Electrical Engineering question 17

Your answerChoose one option.

summing amplifier.

difference amplifier.

logarithmic amplifier.

buffer.

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The I-V characteristics of the element between the nodes X and Y is best depicted by

Diagram for Electrical Engineering question 18

Your answerChoose one option.

Diagram for Electrical Engineering question 18 (figure 2)

Diagram for Electrical Engineering question 18 (figure 3)

Diagram for Electrical Engineering question 18 (figure 4)

Diagram for Electrical Engineering question 18 (figure 5)

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A nullator is defined as a circuit element where the voltage across the device and the current through the device are both zero. A series combination of a nullator and a resistor of value, R, will behave as a

Your answerChoose one option.

resistor of value R.

nullator.

open circuit.

short circuit.

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Consider a discrete-time linear time-invariant (LTI) system

, where

where

is the discrete-time unit impulse function. For an input signal

, the output

Your answerChoose one option.

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Consider a continuous-time signal

where

is the continuous-time unit step function. Let

be the continuous-time unit impulse function. The value of

Your answerChoose one option.

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Selected data points of the step response of a stable first-order linear time-invariant (LTI) system are given below. The closest value of the time-constant, in sec, of the system is

Time (sec)	0.6	1.6	2.6	10
Output	0.78	1.65	2.18	2.98	3

Your answerChoose one option.

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The Nyquist plot of a strictly stable

having the numerator polynomial as

encircles the critical point

once in the anti-clockwise direction. Which one of the following statements on the closed-loop system shown in figure, is correct?

Diagram for Electrical Engineering question 23

Your answerChoose one option.

The system stability cannot be ascertained.

The system is marginally stable.

The system is stable.

The system is unstable.

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During a power failure, a domestic household uninterruptible power supply (UPS) supplies AC power to a limited number of lights and fans in various rooms. As per a Newton-Raphson load-flow formulation, the UPS would be represented as a

Your answerChoose one option.

Slack bus

PV bus

PQ bus

PQV bus

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Which one of the following figures represents the radial electric field distribution

caused by a spherical cloud of electrons with a volume charge density,

for

(both

are positive and

is the radial distance) and

for

Diagram for Electrical Engineering question 25

Your answerChoose one option.

Fig. (i)

Fig. (ii)

Fig. (iii)

Fig. (iv)

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GATE EE purpose:exam-prep PYQs

Question 16

Question 17

Question 18

Question 19

Question 20

Question 21

Question 22

Question 23

Question 24

Question 25