Practice MCQ Questions and answers on Power Electronics Test Questions

A. Single phase

B. 3 phase

C. Poly phase

D. Only (b) and (c)

A. Phase current

B. Three times the phase current

C. Three times the line current

D. Zero at all times

A. Equal to the input frequency

B. Twice the input frequency

C. Three times the input frequency

D. Six times the input frequency

A. TRIAC

B. SCR

C. GTO

D. Only (a) and (b)

A. Negative resistance characteristics

B. Goes into avalanche condition

C. Voltage drop snaps back

D. All of these

A. Do not contribute to the collector current

B. Result in net current flow component into the base

C. Contribute to the collector current

D. Only (a) and (b)

E. Only (b) and (c)

A. Only at turn - on

B. Only at turn - off

C. Both at turn on and off

D. None of these

A. AC - DC converters

B. AC - AC converters

C. DC - AC converters

D. DC - DC converters

A. Voltage mode control

B. Current mode control

C. Hysteric control

D. All of these

A. Obtain an dc output waveform from a dc power supply

B. Obtain an ac output waveform from a dc power supply

C. Obtain an dc output waveform from a dc power supply

D. Obtain an ac output waveform from a ac power supply