GATE ECE topic:communication-engineering PYQs & Answers — Page 31

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Questions 301–310 of 715. Imported answers require independent review unless marked reviewed.

Topic practice 715 questionsPage 31 of 72

For the following circuit with an ideal OPAMP, the difference between the maximum and the minimum values of the capacitor voltage (

) is ________.

Diagram for Electronics and Communication Engineering question 41

Your answerChoose one option.

15 V

27 V

13 V

14 V

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A circuit with an ideal OPAMP is shown. The Bode plot for the magnitude (in dB) of the gain transfer function (

) of the circuit is also provided (here,

is the angular frequency in rad/s). The values of

and

are ____________.

Diagram for Electronics and Communication Engineering question 42

Your answerChoose one option.

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For the circuit shown, the clock frequency is

and the duty cycle is 25%. For the signal at the Q output of the Flip-Flop, __________.

Diagram for Electronics and Communication Engineering question 43

Your answerChoose one option.

frequency is

and duty cycle is 50%

frequency is

and duty cycle is 25%

frequency is

and duty cycle is 50%

frequency is

and duty cycle is 25%

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Consider an even polynomial

given by

where

is an unknown real parameter. The complete range of

for which

has all its roots on the imaginary axis is ________.

Your answerChoose one option.

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Consider the following series:

For which of the following combinations of

values does this series converge?

Your answerSelect all correct options. You can choose more than one.

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The outputs of four systems (

, and

) correspond to the input signal

, for all time

, are shown in the figure.

Based on the given information, which of the four systems is/are definitely NOT LTI (linear and time-invariant)?

Diagram for Electronics and Communication Engineering question 46

Your answerSelect all correct options. You can choose more than one.

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Select the CORRECT statement(s) regarding semiconductor devices.

Your answerSelect all correct options. You can choose more than one.

Electrons and holes are of equal density in an intrinsic semiconductor at equilibrium.

Collector region is generally more heavily doped than Base region in a BJT.

Total current is spatially constant in a two terminal electronic device in dark under steady state condition.

Mobility of electrons always increases with temperature in Silicon beyond 300 K.

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A state transition diagram with states

, and

, and transition probabilities

is shown in the figure (e.g.,

denotes the probability of transition from state A to B). For this state diagram, select the state(s) which is/are universally true.

Diagram for Electronics and Communication Engineering question 48

Your answerSelect all correct options. You can choose more than one.

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Consider a Boolean gate (D) where the output

is related to the inputs

and

, where + denotes logical OR operation. The Boolean inputs ‘0’ and ‘1’ are also available separately. Using instances of only D gates and inputs ‘0’ and ‘1’, ______ (select the correct option(s)).

Your answerSelect all correct options. You can choose more than one.

NAND logic can be implemented

OR logic cannot be implemented

NOR logic can be implemented

AND logic cannot be implemented

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Two linear time-invariant systems with transfer functions

and

have unit step responses

and

, respectively. Which of the following statements is/are true?

Your answerSelect all correct options. You can choose more than one.

and

have the same percentage peak overshoot.

and

have the same steady-state value.

and

have the same damped frequency of oscillation.

and

have the same 2% settling time.

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GATE ECE topic:communication-engineering PYQs

Question 41

Question 42

Question 43

Question 44

Question 45

Question 46

Question 47

Question 48

Question 49

Question 50