GATE ECE topic:electronics PYQs & Answers — Page 41

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Questions 401–410 of 715. Imported answers require independent review unless marked reviewed.

Topic practice 715 questionsPage 41 of 72

are six vectors in

, which one of the following statements is FALSE?

Your answerChoose one option.

It is not necessary that these vectors span

These vectors are not linearly independent.

Any four of these vectors form a basis for

spans

, then it forms a basis for

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For a vector field

, which one of the following is FALSE?

Your answerChoose one option.

is solenoidal if

is another vector field.

is irrotational if

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The partial derivative of the function

with respect to

at the point

Your answerChoose one option.

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The general solution of

Your answerChoose one option.

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The output

of a discrete-time system for an input

The unit impulse response of the system is

Your answerChoose one option.

0 for all

1 for all

unit step signal

unit impulse signal

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A single crystal intrinsic semiconductor is at a temperature of 300 K with effective density of states for holes twice that of electrons. The thermal voltage is 26 mV.

The intrinsic Fermi level is shifted from mid-band energy level by

Your answerChoose one option.

18.02 meV.

9.01 meV.

13.45 meV.

26.90 meV.

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Consider the recombination process via bulk traps in a forward biased

homojunction diode. The maximum recombination rate is

. If the electron and the hole capture cross-sections are equal, which one of the following is FALSE?

Your answerChoose one option.

With all other parameters unchanged,

decreases if the intrinsic carrier density is reduced.

occurs at the edges of the depletion region in the device.

depends exponentially on the applied bias.

With all other parameters unchanged,

increases if the thermal velocity of the carriers increases.

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The components in the circuit shown below are ideal. If the op-amp is in positive feedback and the input voltage

is a sine wave of amplitude 1 V, the output voltage

Diagram for Electronics and Communication Engineering question 8

Your answerChoose one option.

a non-inverted sine wave of 2 V amplitude.

an inverted sine wave of 1 V amplitude.

a square wave of 5 V amplitude.

a constant of either +5 V or −5 V.

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In the circuit shown below, the Thevenin voltage

Diagram for Electronics and Communication Engineering question 9

Your answerChoose one option.

2.4 V

2.8 V

3.6 V

4.5 V

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The figure below shows a multiplexer where

and

are the select lines,

are the input data lines, EN is the enable line, and

is the output.

Diagram for Electronics and Communication Engineering question 10

Your answerChoose one option.

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GATE ECE topic:electronics PYQs

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Question 7

Question 8

Question 9

Question 10