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 8 of 41

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Q71.
The arrangement in the given figure is a hybid T. If 100 mW fed at port 1, the power reflected back at port 1 is

a.

0

b.

25 mW

c.

50 mW

d.

100 mW

Discuss
Answer: (c).50 mW
Q72.
If wavelength in free space is ฮปโ‚€ wavelength in insulator ฮป, ฮผr is relative permittivity or insulator and โˆˆr is relative permittivity or insulator, then

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (b).B
Q73.
In the given figure the circuits for input impedance of a microwave device with output ports match terminated. The device is

a.

E plane tee

b.

H plane tee

c.

magic tee

d.

hybrid ring

Discuss
Answer: (d).hybrid ring
Q74.
The scattering matrix of magic tee is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q75.
A quarter wave line open circuited at far end behaves as

a.

inductance

b.

L and C in parallel

c.

capacitance

d.

L and C in series

Discuss
Answer: (d).L and C in series
Q76.
Microwave resonators are used in

a.

microwave oscillators

b.

microwave narrow band amplifier

c.

microwave frequency metres

d.

all of the above

Discuss
Answer: (d).all of the above
Q77.
Assertion (A): TWT uses a focussing mechanism to prevent the electron beam from spreading.

Reason (R): In a TWT the electron beam has to travel a much longer distance than in klystron.

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: (a).Both A and R are correct and R is correct explanation of A
Q78.
In a TWT the amplitude of resultant wave travelling down the helix

a.

increases exponentially

b.

increases linearly

c.

decreases exponentially

d.

is almost constant

Discuss
Answer: (a).increases exponentially
Q79.
Which of the following is not a travelling wave?

a.

e = Em sin (ฮฒx - ฯ‰t)

b.

e = Em cos (ฮฒx - ฯ‰t)

c.

e = Em sin (ฯ‰t - ฮฒx)

d.

e = Em sin (ฮฒx)

Discuss
Answer: (d).e = Em sin (ฮฒx)
Q80.
Guide wavelength (ฮปg), cutoff wavelength (ฮปc) and free space wavelength (ฮปโ‚€) of a waveguide are related as

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
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