Explore topic-wise MCQs in Power Electronics.

This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Power Electronics knowledge and support exam preparation. Choose a topic below to get started.

1.

If V1 and V2 are the instantaneous voltages of the two converter circuits in the dual convert, then the output voltage is

A. V1 + V2
B. (V1 + V2)/2
C. V1 – V2
D. 2(V1 + V2)
Answer» C. V1 – V2
Discussion
2.

The reactor in circulating current type dual converters

A. increases losses
B. reduces power factor
C. increase the weight of the circuit
D. all of the above
Answer» E.
Discussion
3.

Circulating current flows

A. from load to converters
B. from one converter to another converter
C. in the whole circuit
D. none of the mentioned
Answer» C. in the whole circuit
Discussion
4.

In case of circulating current type dual converters, the reactor is inserted between

A. supply and converter
B. across the load
C. between the converters
D. no reactor is used in case of circulating type dual converter
Answer» D. no reactor is used in case of circulating type dual converter
Discussion
5.

In case of three-phase dual converter, one of the converter circuits is fired at an angle of 60°. For both the converter circuits to have equal average output voltage, what is the value of the firing angle for the other converter circuit?

A. 60°
B. 120°
C. 100°
D. Insufficient data
Answer» C. 100°
Discussion
6.

What causes circulating current in dual converters?

A. Temperature issues
B. Inductance in load circuit
C. Out of phase voltages from both the converters
D. none of the mentioned
Answer» D. none of the mentioned
Discussion
7.

In circulating current mode dual converters, the circulating current is avoided by

A. connecting a series reactor
B. maintaining α1 + α2 = 180°
C. operating only one converter
D. adding an extra SCR
Answer» B. maintaining α1 + α2 = 180°
Discussion