Microwave Communication MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Microwave Communication, a fundamental topic in the field of Electronics and Communication Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Microwave Communication MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Microwave Communication mcq questions that explore various aspects of Microwave Communication problems. Each MCQ is crafted to challenge your understanding of Microwave Communication principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Electronics and Communication Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Microwave Communication MCQs are your pathway to success in mastering this essential Electronics and Communication Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Microwave Communication. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Microwave Communication knowledge to the test? Let's get started with our carefully curated MCQs!

Microwave Communication MCQs | Page 37 of 41

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Q361.
As regards rectangular and circular waveguides

a.

both have infinite set of TE and TM modes

b.

rectangular waveguide has infinite TE and TM modes but not the circular waveguide

c.

circular waveguide has infinite TE and TM modes but not the rectangular waveguide

d.

none of the above

Discuss
Answer: (a).both have infinite set of TE and TM modes
Q362.
In a high frequency coaxial line and the length of line characteristic impedance is a function of

a.

properties of insulating material only

b.

inner and outer conductor radius only

c.

both (a) and (b)

d.

neither (a) nor (b)

Discuss
Answer: (c).both (a) and (b)
Q363.
Assertion (A): In TE₁₀ mode the cutoff frequency of rectangular waveguide is c/2a, where a is the broad dimension and c is velocity of light.

Reason (R): TE₁₀ mode is the dominant mode in rectangular waveguide.

a.

Both A and R are correct and R is correct explanation of A

b.

Both A and R are correct but R is not correct explanation of A

c.

A is correct but R is wrong

d.

A is wrong but R is correct

Discuss
Answer: (b).Both A and R are correct but R is not correct explanation of A
Q364.
In which of the following devices can the operation be visualised in terms of a series feedback loops?

a.

TWT

b.

Reflex klystron

c.

Klystron amplifier

d.

Backward wave oscillator

Discuss
Answer: (d).Backward wave oscillator
Q365.
The first and second subscripts in models of circular waveguides depict

a.

the number of full sine wave variations in circumference in direction and Bessel function variations in radial direction respectively

b.

the Bessel function variations in radial direction and the number of full sine wave variations in circumference direction respectively

c.

the Bessel function variations in circumference direction and number of full sine wave variations in radial direction respectively

d.

none of the above

Discuss
Answer: (a).the number of full sine wave variations in circumference in direction and Bessel function variations in radial direction respectively
Q366.
In which mode of circular waveguide does the attenuation continuously decrease as frequency is increased?

a.

TE₀₁

b.

TE₁₁

c.

TE₀₅

d.

TE₂₁

Discuss
Answer: (a).TE₀₁
Q367.
In which mode of rectangular waveguide are all field components zero?

a.

TM₀₀

b.

TM₁₁

c.

TM₀₁

d.

TM₁₀

Discuss
Answer: (a).TM₀₀
Q368.
A microstrip line has dielectric having relative permittivity ∈r. The effective dielectric constant is

a.

more than ∈r

b.

equal to 1

c.

less than ∈r

d.

either a or b

Discuss
Answer: (c).less than ∈r
Q369.
Oscillations are obtained from a reflex klystron only for combinations of anode voltage and repeller voltage that give a favourable transit time.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q370.
The noise figure of klystron amplifier is about

a.

25 dB

b.

3 dB

c.

zero

d.

1 dB

Discuss
Answer: (a).25 dB
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