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 28 of 41

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Q271.
In an optional fiber the refractive index of cladding material should be

a.

nearly 1

b.

very low

c.

less than that of core

d.

more than that of core

Discuss
Answer: (c).less than that of core
Q272.
In microwave circuits, a mode transducer is used to

a.

change mode of wave transmission

b.

change direction of wave transmission

c.

change polarization of wave transmission

d.

change mode, direction or polarization wave transmission

Discuss
Answer: (d).change mode, direction or polarization wave transmission
Q273.
A waveguide connected to a circularly polarized antenna must be able to efficiently propagate both vertically and horizontally polarised waves.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q274.
Assertion (A): Inter-digitated geometry is widely used for microwave transistors.

Reason (R): Tuning at input and output of transistor uses MOS chip capacitors.

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
Q275.
For a 1 cm x 2 cm air filled rectangular waveguide the maximum frequency should be less than about

a.

1000 MHz

b.

5000 MHz

c.

14000 MHz

d.

140000 MHz

Discuss
Answer: (c).14000 MHz
Q276.
Hollow waveguides are used as transmission lines at frequencies

a.

above 1 GHz

b.

above 5 GHz

c.

above 10 MHz

d.

above 1 MHz

Discuss
Answer: (b).above 5 GHz
Q277.
To ensure that only dominant TE₁₀ mode propagates in a rectangular waveguide, the operating frequency

a.

must be more than cutoff frequency of TE₁₀ mode

b.

must be less than cutoff frequency of TE₂₀ mode

c.

must be more than cutoff frequency of TE₁₀ mode and less than cutoff frequency of TE₂₀ mode

d.

must be less than cutoff frequency of TE₁₀ mode

Discuss
Answer: (c).must be more than cutoff frequency of TE₁₀ mode and less than cutoff frequency of TE₂₀ mode
Q278.
In a microwave power measurement using bolometer, the principle of working is variation of

a.

inductance with absorption of power

b.

resistance with absorption of power

c.

capacitance with absorption of power

d.

cavity dimension with heat generated by power

Discuss
Answer: (b).resistance with absorption of power
Q279.
Z₀ = (Zoc Zsc)^0.5

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q280.
A microwave junction is matched at all ports if the S matrix

a.

has all diagonal elements zero

b.

has all diagonal elements equal but not zero

c.

has all diagonal elements complex

d.

is Hermitian

Discuss
Answer: (a).has all diagonal elements zero
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