Explore topic-wise MCQs in Power Electronics.

This section includes 12 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.

Find the expression for average output voltage in a type D chopper on RL load.a) Vs x Duty cycle (α)b) Vs x Tc) Vs x (T – T)/Td) Vs2/2Answer: cExplanation:During Ton = Vs x Ton/TDuring Toff = – Vs x Toff/TVo = Vs (Ton – Toff)/T. advertisement/**/ var adpushup = adpushup || {}; adpushup.que = adpushup.que || []; adpushup.que.push(function() { adpushup.triggerAd("90f55663-effd-4105-b1e7-29d86b526544"); });/**/ 10. Find the average output voltage for a type D chopper if it is given a dc supply of 220 V. Chopper frequency is 2 kHz and both the chopper switches are operated for 0.3 ms.

A. Vs x Duty cycle (α)b) Vs x Tc) Vs x (T – T)/Td) Vs2/2Answer: cExplanation:During Ton = Vs x Ton/TDuring Toff = – Vs x Toff/TVo = Vs (Ton – Toff)/T. advertisement/**/ var adpushup = adpushup || {}; adpushup.que = adpushup.que || []; adpushup.que.push(function() { adpushup.triggerAd("90f55663-effd-4105-b1e7-29d86b526544"); });/**/ 10. Find the average output voltage for a type D chopper if it is given a dc supply of 220 V. Chopper frequency is 2 kHz and both the chopper switches are operated for 0.3 ms.a) 220 V
B. Vs x Tc) Vs x (T – T)/Td) Vs2/2Answer: cExplanation:During Ton = Vs x Ton/TDuring Toff = – Vs x Toff/TVo = Vs (Ton – Toff)/T. advertisement/**/ var adpushup = adpushup || {}; adpushup.que = adpushup.que || []; adpushup.que.push(function() { adpushup.triggerAd("90f55663-effd-4105-b1e7-29d86b526544"); });/**/ 10. Find the average output voltage for a type D chopper if it is given a dc supply of 220 V. Chopper frequency is 2 kHz and both the chopper switches are operated for 0.3 ms.a) 220 Vb) 108 V
C. Vs x (T – T)/Td) Vs2/2Answer: cExplanation:During Ton = Vs x Ton/TDuring Toff = – Vs x Toff/TVo = Vs (Ton – Toff)/T. advertisement/**/ var adpushup = adpushup || {}; adpushup.que = adpushup.que || []; adpushup.que.push(function() { adpushup.triggerAd("90f55663-effd-4105-b1e7-29d86b526544"); });/**/ 10. Find the average output voltage for a type D chopper if it is given a dc supply of 220 V. Chopper frequency is 2 kHz and both the chopper switches are operated for 0.3 ms.a) 220 Vb) 108 Vc) 98 V
D. Vs2/2Answer: cExplanation:During Ton = Vs x Ton/TDuring Toff = – Vs x Toff/TVo = Vs (Ton – Toff)/T. advertisement/**/ var adpushup = adpushup || {}; adpushup.que = adpushup.que || []; adpushup.que.push(function() { adpushup.triggerAd("90f55663-effd-4105-b1e7-29d86b526544"); });/**/ 10. Find the average output voltage for a type D chopper if it is given a dc supply of 220 V. Chopper frequency is 2 kHz and both the chopper switches are operated for 0.3 ms.a) 220 Vb) 108 Vc) 98 Vd) 44 VAnswer: dExplanation: T = 1/f = 0.5 msTon = 0.3 msToff = 0.2 msVo = Vs (Ton – Toff)/T = 220 x (1/5) = 44 V. Sanfoundry Global Education & Learning Series – Power Electronics.To practice all areas of Power Electronics, here is complete set of 1000+ Multiple Choice Questions and Answers.Participate in the Sanfoundry Certification contest to get free Certificate of Merit. Join our social networks below and stay updated with latest contests, videos, internships and jobs!Telegram | Youtube | LinkedIn | Instagram | Facebook | Twitter | PinterestYoutube | LinkedIn | Instagram | Facebook | Twitter | Pinterest« Prev - Power Electronics Questions and Answers – Type C Chopper» Next - Power Electronics Questions and Answers – Type E Choppers-1
Answer» D. Vs2/2Answer: cExplanation:During Ton = Vs x Ton/TDuring Toff = – Vs x Toff/TVo = Vs (Ton – Toff)/T. advertisement/**/ var adpushup = adpushup || {}; adpushup.que = adpushup.que || []; adpushup.que.push(function() { adpushup.triggerAd("90f55663-effd-4105-b1e7-29d86b526544"); });/**/ 10. Find the average output voltage for a type D chopper if it is given a dc supply of 220 V. Chopper frequency is 2 kHz and both the chopper switches are operated for 0.3 ms.a) 220 Vb) 108 Vc) 98 Vd) 44 VAnswer: dExplanation: T = 1/f = 0.5 msTon = 0.3 msToff = 0.2 msVo = Vs (Ton – Toff)/T = 220 x (1/5) = 44 V. Sanfoundry Global Education & Learning Series – Power Electronics.To practice all areas of Power Electronics, here is complete set of 1000+ Multiple Choice Questions and Answers.Participate in the Sanfoundry Certification contest to get free Certificate of Merit. Join our social networks below and stay updated with latest contests, videos, internships and jobs!Telegram | Youtube | LinkedIn | Instagram | Facebook | Twitter | PinterestYoutube | LinkedIn | Instagram | Facebook | Twitter | Pinterest« Prev - Power Electronics Questions and Answers – Type C Chopper» Next - Power Electronics Questions and Answers – Type E Choppers-1
Discussion
2.

In the below given circuit, if Vo = -Vs then

A. both the chopper switches are on
B. only SW2 and D1 is active
C. both the chopper switches are off and both the diodes D1 and D2 are active
D. both the chopper switches are on and both the diodes D1 and D2 are reversed biased
Answer» D. both the chopper switches are on and both the diodes D1 and D2 are reversed biased
Discussion
3.

For a type D chopper, if duty cycle α < 0.5 then the

A. average voltage is positive
B. average voltage is negative
C. average voltage is zero
D. none of the mentioned
Answer» C. average voltage is zero
Discussion
4.

In the below given circuit, if only SW1 is operated then

A. the power flows from load to source
B. the power flows from source to load
C. the average voltage is positive
D. none of the mentioned
Answer» E.
Discussion
5.

What is the load voltage value when both the chopper switches are on?

A. 0
B. Vs
C. 2Vs
D. Vs/2
Answer» C. 2Vs
Discussion
6.

FIND_THE_EXPRESSION_FOR_AVERAGE_OUTPUT_VOLTAGE_IN_A_TYPE_D_CHOPPER_ON_RL_LOAD.?$

A. Vs x Duty cycle (α)
B. Vs x T<sup><on></on></sup>
C. Vs x (T<sup><on></on></sup> – T<sup><off></off></sup>)/T
D. Vs<sup>2</sup>/2
Answer» D. Vs<sup>2</sup>/2
Discussion
7.

Find the average output voltage for a type D chopper if it is given a dc supply of 220 V. Chopper frequency is 2 kHz and both the chopper switches are operated for 0.3 ms.$

A. 220 V
B. 108 V
C. 98 V
D. 44 V
Answer» E.
Discussion
8.

For a type D chopper, if duty cycle α < 0.5 then the$

A. average voltage is positive
B. average voltage is negative
C. average voltage is zero
D. none of the mentioned
Answer» C. average voltage is zero
Discussion
9.

For a type D chopper, if duty cycle = 0.5 then the

A. average voltage is positive
B. average voltage is negative
C. average voltage is zero
D. chopper cannot be operated with duty cycle = 0.5
Answer» D. chopper cannot be operated with duty cycle = 0.5
Discussion
10.

For a type D chopper, the average value of output voltage will be positive when

A. T<sub>on</sub> = T<sub>off</sub>
B. T<sub>on</sub> < T<sub>off</sub>
C. T<sub>off</sub> = 0
D. T<sub>on</sub> > T<sub>off</sub>
Answer» E.
Discussion
11.

In a type-D chopper

A. current can flow in both the directions of the load
B. current cannot flow in both the directions of the load
C. voltage can only be positive
D. voltage can only be negative
Answer» C. voltage can only be positive
Discussion
12.

A type D chopper is a

A. two quadrant type-B chopper
B. two quadrant type-A chopper
C. two quadrant type-C chopper
D. none of the mentioned
Answer» B. two quadrant type-A chopper
Discussion