Power Electronics MCQ Questions & Answers

Home

Competitive Exams

Aptitude English Verbal Reasoning Non Verbal Reasoning General Knowledge(GK) General Science(GS) Data Interpretation(DI) Banking Awareness Current Affairs

Computer & Programming

Computer Fundamentals Networking SQL Database C Programming C++ Programming Java Python

Other Subjects

Commerce Management Law Political Science Psychology Agriculture

Exam Categories

SSC Exams Railway Exams All Exams

Popular Exams

SSC CGL SSC CHSL SSC MTS Railway Group D RRB ALP RRB Technician RRB Section Controller

Engineering Subjects

Computer Science Electronics & Communication Mechanical Engineering Civil Engineering Electrical Engineering

More Engineering

Chemical Engineering Automobile Engineering Biotechnology Mining Engineering Geological Engineering

Engineering Core

Engineering Mathematics Engineering Physics Engineering Chemistry Metallurgical Engineering

Computer Fundamentals

Computer Fundamentals Networking Database SQL MySQL

Programming

C Programming C++ Programming Java Python PHP JavaScript

Advanced

Artificial Intelligence Machine Learning Data Science Cloud Computing Hadoop IoT

Graduation & PG

Commerce Management Law Mass Communication Political Science Psychology

Resources

Current Affairs Interview Blog

Each section contains 100 MCQs on Power Electronics .

A voltage source inverter is normally employed when

A) Source inductance is large and load inductance is small B) Source inductance is small and load inductance is large C) Both source and load inductance are small D) Both source and load inductance are large

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Identify the given symbol.
Power Electronics mcq question image

A) SIDAC B) TRIAC C) DIAC D) PHOTO THYRISTOR

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

The characteristic of UJT shown in Figure exhibits η = 0.5, V_V = 1 V, I_V = 10 mA, I_P = 20 µA and V_P = 14 V. The value of R₁ that will ensure proper turn on and turn off must be
Power Electronics mcq question image

A) 800 KΩ > R₁ > 2.9 KΩ B) 2.9 KΩ > R₁ > 800 KΩ C) 2.9 KΩ > R₁ > 2 KΩ D) 800 KΩ > R₁ > 200 KΩ

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

In a GTO, anode current begins to fall when gate current

A) is negative peak at time t = 0 B) is negative peak at time t = storage period C) just begins to become negative at t = 0 D) just begins to become positive at t = 0

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

The output voltage waveform of a three phase square wave inverter contains

A) Only even harmonics B) Both even and odd harmonics C) Only odd harmonics D) Both triple harmonics

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

In an SCR circuit, the angle of conduction can be changed by . . . . . . . .

A) Changing anode voltage B) Changing gate voltage C) Reverse biasing the gate D) None of the above

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Which type of protection is provided for SCR by connecting the snubber circuit across it?

A) $$\frac{{{\text{dv}}}}{{{\text{dt}}}}$$ protection B) $$\frac{{{\text{di}}}}{{{\text{dt}}}}$$ protection C) Over-voltage protection D) Over-current protection

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

After firing an SCR, the gating pulse is removed. Then the current in the SCR will

A) remain same B) fall to zero C) rise up D) rise a little then fall to zero

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

In order to obtain static voltage equalization in series connected SCRs, connections are made of

A) One resistor across the string B) Resistors of different values across each SCR C) Resistors of same values across each SCR D) One resistor in series with the string

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

When a thyristor and transistor as a switch are compared, true statement is

A) Thyristor requires turn off circuit while transistor does not B) The voltage drop of thyristor is less than transistor C) Thyristor requires a continuous gate current D) Transistor does not draw continuously base current

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

1 2 3 4 5 6 7 8 9 10

Power Electronics MCQ Questions & Answers | ECE