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

This section includes 5 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.

A single-phase half-wave thyristor circuit with R load is triggered at an angle of α = 0°. As such, the maximum value of the average output voltage would be given by

A. Consider Vs = Vm sinωt.
B. Vm
C. 2Vm/π
D. Vm/π
E. Vm/α
Answer» D. Vm/π
Discussion
2.

For the below given circuit with firing angle α & angular frequency of ω, the circuit turn-off time in secs can be given by

A. α/π
B. π/α
C. ω/π
D. π/ω
Answer» E.
Discussion
3.

Below shown ideal circuit is triggered at a firing angle of α. From ωt = π to 2π+α

A. SCR voltage is zero
B. Load voltage is maximum
C. SCR voltage is –Vmsinα
D. SCR acts like a short circuit
Answer» D. SCR acts like a short circuit
Discussion
4.

Below shown ideal circuit is triggered at a firing angle of α. The voltage across the SCR is zero from ωt =

A. 0 to α
B. 0 to π
C. α to 2π
D. α to π
Answer» E.
Discussion
5.

In the below given circuit, the SCR is triggered at a certain firing angle α.

A. The load current falls to zero at ωt =
B. α
C. α/2
D. π
E. π/2
Answer» D. π
Discussion