Explore topic-wise MCQs in Power Electronics.

This section includes 5 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.

WHAT_IS_THE_EXPRESSION_FOR_THE_VALUE_OF_THE_CAPACITOR_IN_THE_VOLTAGE_COMMUTATION_CIRCUIT?_LET_TC_BE_THE_CIRCUIT_TURN_OFF_TIME_AND_IO_BE_THE_CONSTANT_LOAD_CURRENT.?$

A. Io x (dv/dt)
B. Vs/Io
C. (tc x Io)/Vs
D. none of the mentioned
Answer» D. none of the mentioned
Discussion
2.

Which type of commutation circuit does not work on no load?

A. Voltage commutation
B. Current commutation
C. Both voltage and current commutation
D. None of the mentioned
Answer» B. Current commutation
Discussion
3.

In a voltage commutated SCR, the main SCR is commutated b?

A. triggering the auxiliary SCR
B. sending a negative pulse to the main SCR
C. removing the supply Vs
D. none of the mentioned
Answer» B. sending a negative pulse to the main SCR
Discussion
4.

In case of current commutation of SCR

A. a diode is connected in series with the main SCR
B. a diode is connected in parallel with the main SCR
C. a diode is connected in anti-parallel with the main SCR
D. none of the mentioned
Answer» D. none of the mentioned
Discussion
5.

The process of commutating a SCR by applying a reverse voltage to an SCR through a previously charged capacitor is called as

A. capacitor commutation
B. forced commutation
C. voltage commutation
D. current commutation
Answer» D. current commutation
Discussion