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 9 of 41

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Q81.
In a backward wave oscillator the wave travelling along the line winds itself back and forth

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q82.
A line is excited by a 100 V dc source. If reflection coefficients at both ends are 1 each then

a.

there will be no oscillations on line

b.

there will be only 1 or 2 oscillations on line

c.

there will be a finite number of oscillations on line

d.

the oscillations will continue indefinitely

Discuss
Answer: (d).the oscillations will continue indefinitely
Q83.
A line has Z0 = 300 โˆ  0° ฮฉ. If ZL = 150 โˆ  0° ฮฉ, reflection coefficient is

a.

0.5

b.

0.3333

c.

-0.3333

d.

-0.5

Discuss
Answer: (c).-0.3333
Q84.
Assertion (A): A backward wave oscillator has an internal positive feedback.

Reason (R): A positive feedback is necessary for sustained oscillations.

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
Q85.
In a microstrip transmission the signal can be easily redirected by changing the centre strip.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q86.
The frequency of oscillation in a backward wave oscillator can be changed by

a.

varying the voltage which controls beam velocity

b.

varying the beam current

c.

both by varying the beam current and by light varying the voltage which controls beam velocity

d.

changing the rate of thermionic emission

Discuss
Answer: (a).varying the voltage which controls beam velocity
Q87.
Reflection from the object to be measured is significant only when the wavelength is

a.

much bigger than the size of object

b.

much smaller than the size of object

c.

almost of the size of object

d.

either (a) or (c)

Discuss
Answer: (b).much smaller than the size of object
Q88.
The speed at which axial electric field due to signal advances in a TWT is equal to

a.

speed of light

b.

(speed of light) (helix pitch helix circumference)

c.

(speed of light) (helix circumference helix pitch)

d.

(speed of light) (helix pitch) (helix circumference)

Discuss
Answer: (b).(speed of light) (helix pitch helix circumference)
Q89.
Slotted line can be used for measurement of high frequencies

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q90.
In a waveguide the dielectric region is generally

a.

air

b.

magnetic material

c.

brass

d.

mica

Discuss
Answer: (a).air
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