Power Electronics MCQs with answers Page - 8

Here, you will find a collection of MCQ questions on Power Electronics. Go through these questions to enhance your preparation for upcoming examinations and interviews.

To check the correct answer, simply click the View Answer button provided for each question.

Have your own questions to contribute? Click the button below to share your MCQs with others!

+ Add Question

A

Admin • 828.03K Points
Coach

Q. The function of snubber circuit connected across the SCR is to:

  • (A) Suppress dv/dt
  • (B) Increase dv/dt
  • (C) Decrease dv/dt
  • (D) Decrease di/dt

A

Admin • 828.03K Points
Coach

Q. An UJT exhibits negative resistance region:

  • (A) Before the break point
  • (B) Between peak and valley point
  • (C) After the valley point
  • (D) Both (a) and (c)

A

Admin • 828.03K Points
Coach

Q. For dynamic equalizing circuit used for series connected SCRs, the choice of C is based on:

  • (A) Reverse recovery characteristics
  • (B) Turn-on characteristics
  • (C) Turn-off characteristics
  • (D) Rise time characteristics

A

Admin • 828.03K Points
Coach

Q. A four quadrant operation require:

  • (A) Two full converters in series
  • (B) Two full converters connected back to back
  • (C) Two full converters connected in parallel
  • (D) Two semi conductors connected back to back

A

Admin • 828.03K Points
Coach

Q. A static induction thyristor

  • (A) is a majority carrier device
  • (B) is a minority carrier device
  • (C) either a majority carrier or minority carrier device
  • (D) has a total number of 2 leads

A

Admin • 828.03K Points
Coach

Q. A single phase step up cycloconverter changes 50 Hz to 100 Hz. Then one half wave of input will give rise to

  • (A) one half wave of output
  • (B) one full wave of output
  • (C) two full waves of output
  • (D) either (b) or (c)

A

Admin • 828.03K Points
Coach

Q. Which of these triggering methods for series connected SCRs use LASCR in the gate circuit?

  • (A) Resistance triggering
  • (B) Simultaneous triggering
  • (C) Sequential triggering
  • (D) Optical triggering

A

Admin • 828.03K Points
Coach

Q. A 3 phase ac regulator uses

  • (A) 3 thyristors
  • (B) 6 thyristors
  • (C) 9 thyristors
  • (D) 12 thyristors

A

Admin • 828.03K Points
Coach

Q. The average load current supplied by a thyristor depends on

  • (A) firing angle
  • (B) firing frequency
  • (C) magnitude of gate current
  • (D) all of the above

A

Admin • 828.03K Points
Coach

Q. In a 3 phase full wave regulator feeding a star connected resistance load the input voltage is 400 V line to line. The firing angle is 160°. The line to line output voltage would be

  • (A) 400 V
  • (B) about 100 V
  • (C) about 20 V
  • (D) Zero

Add MCQ in this Category

If you want to share an MCQ question in this category, it's a great idea! It will be helpful for many other students using this website.

Share Your MCQ

Browse Categories

Click on category to learn MCQs of that category.