GATE ECE exam:gate PYQs & Answers — Page 25

Home
GATE
Electronics and Communication Engineering
Topics
exam:gate

Questions 241–250 of 715. Imported answers require independent review unless marked reviewed.

Topic practice 715 questionsPage 25 of 72

The

-parameters of a two port network are shown below. The condition for the maximum small signal voltage gain

Diagram for Electronics and Communication Engineering question 46

Your answerChoose one option.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Consider a discrete-time period signal with period

. Let the discrete-time Fourier series (DTFS) representation be

, where

and

. The value of the sum

Your answerChoose one option.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Let an input

have discrete time Fourier transform

be passed through an LTI system. The frequency response of the LTI system is

. The output

of the system is

Your answerChoose one option.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Let

be passed through an LTI system having impulse response

. The output of the system is

Your answerChoose one option.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Let

and

be two band-limited signals having bandwidth

rad/s each. In the figure below, the Nyquist sampling frequency, in rad/s, required to sample

, is

Diagram for Electronics and Communication Engineering question 50

Your answerChoose one option.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The S-parameters of a two port network is given as

with reference to

. Two lossless transmission line sections of electrical lengths

and

are added to the input and output ports for measurement purposes, respectively. The S-parameters

of the resultant two port network is

Diagram for Electronics and Communication Engineering question 51

Your answerChoose one option.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The standing wave ratio on a 50

lossless transmission line terminated in an unknown load impedance is found to be 2.0. The distance between successive voltage minima is 30 cm and the first minimum is located at 10 cm from the load.

can be replaced by an equivalent length

and terminating resistance

of the same line. The value of

and

, respectively, are

Diagram for Electronics and Communication Engineering question 52

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

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The electric field of a plane electromagnetic wave is

Which of the following combination(s) will give rise to a left handed elliptically polarized (LHE) wave?

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

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The following circuit(s) representing a lumped element equivalent of an infinitesimal section of a transmission line is/are

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

Diagram for Electronics and Communication Engineering question 54

Diagram for Electronics and Communication Engineering question 54 (figure 2)

Diagram for Electronics and Communication Engineering question 54 (figure 3)

Diagram for Electronics and Communication Engineering question 54 (figure 4)

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The value of the integral

over the region R, given in the figure

Diagram for Electronics and Communication Engineering question 55

, is ______ (rounded off to the nearest integer).

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

GATE ECE exam:gate PYQs

Question 46

Question 47

Question 48

Question 49

Question 50

Question 51

Question 52

Question 53

Question 54

Question 55