1000+ Power Electronics MCQ Questions and Answers Pdf - 2

Question: 6

Gate circuit or triggering circuit of a thyristor is

(A) may be low power or high power circuit

(B) magnetic circuit

(C) high power circuit

(D) lower power circuit

Question: 7

Which of the following option is not correct about an ac drive compared to a dc drive?

(A) AC drives are less expensive

(B) Power converters for AC drives generate harmonic in the supply system and load circuit

(C) Power converters for AC drives are simple

(D) AC motors are lighter in weight

Question: 8

The most suitable device for high frequency inversion in SMPS is

(A) GTO

(B) MOSFET

(C) BJT

(D) IGBT

Question: 9

Conductive modulation is a phenomenon which occurs in

(A) IGBT

(B) GTO thyristor

(C) Power MOSFET

(D) Power BJT

Question: 10

A current source inverter can be

(A) force commutated

(B) load commutated

(C) neither load nor force commutated

(D) either load or force commutated