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 37 of 42

Discover more Topics under Electronics and Communication Engineering

Q361.
In integral cycle control of ac regulator, the input power factor is equal to

a.

duty cycle ฮฑ

b.

ฮฑ²

c.

โˆšฮฑ

d.

(ฮฑ)^1/3

Discuss
Answer: (c).โˆšฮฑ
Q362.
McMurrary full bridge inverter uses

a.

auxiliary commutation

b.

complementary commutation

c.

natural commutation

d.

any of the above

Discuss
Answer: (a).auxiliary commutation
Q363.
A fully controlled bridge converter feeds a highly inductive load such that the load current can be assumed to be constant. The wave shape of input current is

a.

dc

b.

sinusoidal

c.

rectangular

d.

none of the above

Discuss
Answer: (c).rectangular
Q364.
A static excitation system uses

a.

transformer and thyristors

b.

transformer and ac exciter

c.

dc exciter and ac exciter

d.

transformer and dc exciter

Discuss
Answer: (a).transformer and thyristors
Q365.
The application of gate signal decreases the break over voltage of on SCR.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q366.
The power factor at the input terminals of a cyclo- converter is generally

a.

low and leading

b.

low and lagging

c.

high and leading

d.

high and lagging

Discuss
Answer: (b).low and lagging
Q367.
Two semiconverters are connected in series to form a single phase series converter. The input v = Vm sin ฯ‰t and ฮฑ1 = ฮฑ2 are the firing angles of the two converters. If ฮฑ1 = ฮฑ2 = 0, the dc output voltage is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (c).C
Q368.
A single phase half wave controlled rectifier circuit is feeding on RL load. The circuit has a freewheeling diode. The input voltage is v = Vm sin ฯ‰t. If I0 is the load current during the conduction of freewheeling diode, the KVL equation during the conduction of free wheeling diode is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (b).B
Q369.
The symbol in figure is for

a.

DIAC

b.

P-N junction diode

c.

Schottky diode

d.

None of the above

Discuss
Answer: (c).Schottky diode
Q370.
In the below figure the rms voltage across each half of secondary is 200 V. The peak inverse voltage across each of thyristor is

a.

200 V

b.

โˆš2(200) V

c.

โˆš2(400) V

d.

800 V

Discuss
Answer: (c).โˆš2(400) V
Page 37 of 42