1000+ Power Electronics Objective Type Questions and Answers Pdf - 1

Question: 1

Line regulation is determined by

(A) change in load resistance and output voltage

(B) load current and zener current

(C) change in output voltage and input voltage

(D) load current

Question: 2

In a type chopper, the maximum value of ripple current is

(A) directly proportional to chopping frequency only

(B) directly proportional to the circuit inductance only

(C) inversely proportional to chopping frequency and the circuit inductance

(D) directly proportional to chopping frequency and inversely proportional to the circuit inductance

Question: 3

On increasing the number of pulses in rectification, the form factor, ripple frequency and efficiency.

(A) increases, decreases and increases respectively

(B) decreases, increases and increases respectively

(C) decreases, decreases and increases respectively

(D) all increases

Question: 4

A four quadrant operation requires

(A) two semi converters connected back to back

(B) two full converters connected in parallel

(C) two semi-converters is series

(D) two full converters connected back to back

Question: 5

In a thyristor, anode current is made up of

(A) electrons and holes

(B) electrons only

(C) holes only

(D) none of the above