Top 250+ Solved Power Electronics MCQ Questions Answer

a. high

b. high

c. both high and high

d. either high or high

a. True

b. False

c. none

d. all

a. Zero

b. about 1 V

c. same as input voltage

d. twice the input voltage

a. gate current only

b. external circuit only

c. both gate current and external circuit

d. none of the above

a. 20 A

b. 1 A

c. 100 mA

d. 10 mA

a. 2

b. 3

c. 4

d. 2 or 3

a. ton and toff are almost equal

b. ton >> toff

c. toff >> ton

d. ton is about twice toff

a. firing an SCR

b. turning off an SCR

c. both firing and turning off an SCR

d. none of the above

a. 30 A

b. 152 A

c. 15 A

d. none

a. high and high

b. low and low

c. high and low

d. low and high

a. 150 A

b. 75A

c. 50 A

d. 25 A

a. 60° mode and 120° mode

b. 90° mode and 120° mode

c. 120° mode and 180° mode

d. 120° mode and 240° mode

a. 3 times the line frequency

b. 6 times the line frequency

c. 9 times the line frequency

d. 12 times the line frequency

a. will have equal turn on and turn off periods

b. will have equal turn on but unequal turn off periods

c. may have equal or unequal turn on and turn off periods

d. will have unequal turn on and turn off periods

a. True

b. False

c. none

d. all