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 3 of 41

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Q21.
A square waveguide carries TE₁₁ mode whose axial magnetic field is given by following equation, where the guide dimensions are in cms. The cut off frequency of the mode is

a.

5 GHz

b.

7.5 GHz

c.

6.5 GHz

d.

8 GHz

Discuss
Answer: (b).7.5 GHz
Q22.
In the given figure shows a 10dB directional coupler. If power input at port 1 is 100 mW, power output at port 3 is

a.

10 mW

b.

15 mW

c.

20 mW

d.

25 mW

Discuss
Answer: (a).10 mW
Q23.
In the given figure the line voltage after a number of reflections will be

a.

30 V

b.

-30 V

c.

10 V

d.

-10 V

Discuss
Answer: (c).10 V
Q24.
In directional coupler of the given figure, the terms |S₁₄| and |S₂₃| of scattering matrix are nearly

a.

1 each

b.

0.5 each

c.

0.1 each

d.

1 and 0.5 respectively

Discuss
Answer: (a).1 each
Q25.
A 3 port circulator is in the given figure. Its scattering matrix is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q26.
If ρv is reflection coefficient and VSWR is voltage standing wave ratio, then

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (b).B
Q27.
In terms of R, L, G and C the propagation constant γ of a transmission line is

a.

A

b.

B

c.

c

d.

D

Discuss
Answer: (b).B
Q28.
In the given figure power meters at A and B indicate 1 mW and 110 μW respectively. VSWR of line is

a.

1.5

b.

2

c.

2.5

d.

3

Discuss
Answer: (b).2
Q29.
Which of the following are true for magic tee in the given figure select the answer as per given codes

1. S13 = S23
2. S14 = S24
3. S12 = 0
4. S34 = 0

a.

1, 2 and 3

b.

1, 2 and 4

c.

2, 3 and 4

d.

1, 3 and 4

Discuss
Answer: (c).2, 3 and 4
Q30.
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
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