DC/AC Conversion MCQ Questions & Answers

DC/AC Conversion MCQs : This section focuses on the "DC/AC Conversion". These Multiple Choice Questions (MCQs) should be practiced to improve the DC/AC Conversion skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.

Question 1

Calculate power absorbed by 10 ? load in 3-? 180° VSI if the value of DC supply is 36 V.

A. 20.6 W

B. 24.5 W

C. 26.4 W

D. 28.8 W

Question 2

Calculate power absorbed by 5 ? load in 3-? 120° VSI if the value of DC supply is 16 V.

A. 17.06 W

B. 15.15 W

C. 18.25 W

D. 19.26 W

Question 3

Calculate the line voltage for 3-? 120° VSI if the value of DC supply is 24 V.

A. 16.52 V

B. 16.97 V

C. 12.96 V

D. 12.48 V

Question 4

Calculate the line voltage for 3-? 180° VSI if the value of DC supply is 22 V.

A. 18.52 V

B. 18.12 V

C. 17.96 V

D. 15.48 V

Question 5

Calculate the phase voltage for 3-? 120° VSI if the value of DC supply is 26 V.

A. 10.52 V

B. 10.97 V

C. 10.96 V

D. 10.61 V

Question 6

Calculate the phase voltage for 3-? 180° VSI if the value of DC supply is 20 V.

A. 9.40 V

B. 9.42 V

C. 9.18 V

D. 9.78 V

Question 7

Full form of CSI is ___________

A. Counter source inverter

B. Counter severe inverter

C. Current source inverter

D. Current severe inverter

Question 8

Full form of VSI is ___________

A. Voltage source inverter

B. Volume source inverter

C. Voltage severe inverter

D. Voltage source inserter

Question 9

Inverters are used to convert DC power into variable AC power.

A. True

B. False

Question 10

Number of switches turned on in 3-phase 120° VSI at a single time are __________

A. 2

B. 4

C. 5

D. 3

Question 11

Number of switches turned on in 3-phase 180° VSI at a single time are __________

A. 3

B. 2

C. 1

D. 4

Question 12

Short circuit problem is severe in case of Voltage source inverter.

A. True

B. False

Question 13

Switches used in VSI are ___________

A. Unipolar & Unidirectional

B. Bipolar & Bidirectional

C. Unipolar & Bidirectional

D. Unidirectional

Question 14

T.H.D value for 3-? 180° VSI is ________________

A. 36 %

B. 31 %

C. 39 %

D. 46 %

Question 15

Calculate power absorbed by 10 Ω load in 3-∅ 180° VSI if the value of DC supply is 36 V.

A. 20.6 W

B. 24.5 W

C. 26.4 W

D. 28.8 W

Question 16

Calculate power absorbed by 5 Ω load in 3-∅ 120° VSI if the value of DC supply is 16 V.

A. 17.06 W

B. 15.15 W

C. 18.25 W

D. 19.26 W

Question 17

Calculate the line voltage for 3-∅ 120° VSI if the value of DC supply is 24 V.

A. 16.52 V

B. 16.97 V

C. 12.96 V

D. 12.48 V

Question 18

Calculate the line voltage for 3-∅ 180° VSI if the value of DC supply is 22 V.

A. 18.52 V

B. 18.12 V

C. 17.96 V

D. 15.48 V

Question 19

Calculate the phase voltage for 3-∅ 120° VSI if the value of DC supply is 26 V.

A. 10.52 V

B. 10.97 V

C. 10.96 V

D. 10.61 V

Question 20

Calculate the phase voltage for 3-∅ 180° VSI if the value of DC supply is 20 V.

A. 9.40 V

B. 9.42 V

C. 9.18 V

D. 9.78 V

Question 21

T.H.D value for 3-∅ 180° VSI is ________________

A. 36%

B. 31%

C. 39%

D. 46%