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 I₀, 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 ωt and α1, α2 are the firing angles. If α1 = 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.
In a half bridge inverter circuit 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
Q37.
The symbol in figure is for

a.

UJT

b.

PUT

c.

Shockley diode

d.

TRIAC

Discuss
Answer: (a).UJT
Q38.
In a parallel inverter the turn off time tq of thyristor and values of commutating elements L and C are related as

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (c).C
Q39.
The symbol in figure is for

a.

SUS

b.

SBS

c.

SCS

d.

Shockley diode

Discuss
Answer: (b).SBS
Q40.
If peak value of input voltage is Vm and firing angle is α, the average output voltage for single phase half wave and single phase full wave regulators are

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
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