Power Electronics MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Power Electronics, 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 Power Electronics 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 Power Electronics mcq questions that explore various aspects of Power Electronics problems. Each MCQ is crafted to challenge your understanding of Power Electronics 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 Power Electronics 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 Power Electronics. 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 Power Electronics knowledge to the test? Let's get started with our carefully curated MCQs!

Power Electronics MCQs | Page 4 of 42

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Q31.
A single phase converter is fed by a source having an inductance L. If load current is Iโ‚€, the decrease in output voltage due to overlap is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (c).C
Q32.
In a full bridge inverter fed by a battery of voltage V, the rms value of fundamental component of output voltage is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (b).B
Q33.
Two single phase semi-converters are connected in series to form a series converter. The input is v = Vm sin ฯ‰t and ฮฑ1, ฮฑ2 are the firing angles. If ฮฑ1 = 0, the dc output voltage is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (c).C
Q34.
A capacitor C farads is charged to a voltage V. It discharges through a thyristor, a diode and an inductance L. The peak current in the circuit is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (b).B
Q35.
A dc chopper feeds an RLE load and has a duty cycle of 1. The load current will be such that

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q36.
Which of the following is not between F2 layer and D layer?

a.

E layer

b.

F1 layer

c.

G region

d.

All of the above

Discuss
Answer: (c).G region
Q37.
A cycloconverter can be

a.

step down

b.

step up

c.

step down or step up

d.

none of the above

Discuss
Answer: (c).step down or step up
Q38.
In a 3 phase fully controlled converter the firing frequency is

a.

3 times the line frequency

b.

6 times the line frequency

c.

9 times the line frequency

d.

12 times the line frequency

Discuss
Answer: (b).6 times the line frequency
Q39.
Two thyristor of same rating and same specifications

a.

will have equal turn on and turn off periods

b.

will have equal turn on but unequal turn off periods

c.

may have equal or unequal turn on and turn off periods

d.

will have unequal turn on and turn off periods

Discuss
Answer: (c).may have equal or unequal turn on and turn off periods
Q40.
The amount of dielectric heating is inversely proportional to frequency.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (b).False
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