Explore topic-wise MCQs in Power Electronics Question and Answers.

This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Power Electronics Question and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.

In case of a single-phase half-wave circuit with RL load, with firing angle α and extinction angle β, the thyristor is reversed biased from

A. β to α
B. β to 2π+α
C. β to 2π
D. β to 2β
Answer» D. β to 2β
Discussion
2.

For a half-wave single phase thyristor rectifier circuit with any type of load the _______ + _________ waves must ideally give the supply voltage waveform.

A. load voltage, load current
B. load voltage, thyristor voltage
C. supply current, load voltage
D. supply current, thyristor voltage
Answer» C. supply current, load voltage
Discussion
3.

For the below shown circuit,

A. The load voltage waveform from ωt = π to ωt = π+α = β (extinction angle) is
B. gradually rising
C. going from positive to negative
D. gradually decaying
E. zero
Answer» D. gradually decaying
Discussion
4.

For a certain SCR configuration, the below shown waveform is obtained. Find the value of the average output voltage with α = 30° & Vs = 240 V.

A. 50.27 V
B. 100.8 V
C. 140 V
D. 120 V
Answer» C. 140 V
Discussion