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 6 of 41

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Q51.
A line has a phase constant of 29.8 rad/m. At 1000 MHz the wavelength is

a.

29.8 m

b.

2.98 m

c.

2.1 m

d.

0.21 m

Discuss
Answer: (d).0.21 m
Q52.
In a directional coupler

a.

isolation (dB) equals coupling plus directivity

b.

coupling (dB) equals isolation plus directivity

c.

directivity (dB) equals isolation plus coupling

d.

isolation (dB) equals (coupling) (directivity)

Discuss
Answer: (a).isolation (dB) equals coupling plus directivity
Q53.
As the frequency is increased, the charging MVAR in a cable

a.

decreases

b.

increases

c.

remain the same

d.

decreases or remains the scheme

Discuss
Answer: (b).increases
Q54.
Loss angle of a good quality cable is about

a.

1°

b.

30°

c.

70°

d.

90°

Discuss
Answer: (a).1°
Q55.
In a three cavity klystron amplifier, the oscillations are excited in

a.

input cavity

b.

output cavity

c.

intermediate cavity

d.

both (a) and (b)

Discuss
Answer: (c).intermediate cavity
Q56.
Assertion (A): A coaxial line is a non-radiating line.

Reason (R): In a coaxial line the electric and magnetic fields are confined to the region between the concentric conductors.

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
Q57.
Reflex klystron oscillator is essentially a low power device

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q58.
A 10 km long line has a characteristic impedance of 400 ohms. If line length is 100 km, the characteristic impedance is

a.

4000 Ω

b.

400 Ω

c.

40 Ω

d.

4 Ω

Discuss
Answer: (b).400 Ω
Q59.
A matched generator (Zg = Z0) with 1 Ω available. If all ports are matched, the power delivered at ports 1, 2, 3 respectively are

a.

0.5 W, 0.5 W, 0 W

b.

0 W, 0 W, 1 W

c.

0.33 W each

d.

0 W, 0.25 W, 0.25 W

Discuss
Answer: (a).0.5 W, 0.5 W, 0 W
Q60.
Which TM mode in rectangular waveguide has lowest cutoff frequency?

a.

TM₁₁

b.

TM₀₁

c.

TM₁₀

d.

Tm₂₁

Discuss
Answer: (a).TM₁₁
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