Explore topic-wise MCQs in Power Electronics.

This section includes 5 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.

A single phase full bridge inverter has RLC load with R = 4 , L = 35 mH and C = 155 F. The dc input voltage is 230 V and the output frequency is 50 Hz. Find the rms value of the fundamental load current.

A. 28.31 A
B. 20.02 A
C. 16.69 A
D. 26.90 A
Answer» C. 16.69 A
Discussion
2.

For a full bridge inverter with the following load: R = 2 , XL = 8 and XC = 6 .

A. The output voltage lags the current by 45
B. The output current lags the voltage by 45
C. The output current lags the voltage by 90
D. The output current lags the voltage by more than 90
Answer» C. The output current lags the voltage by 90
Discussion
3.

A single phase full bridge inverter is fed from a dc source such that the fundamental component of output voltage = 230 V. Find the rms value of SCR and diode current respectively, for a R load of 2 .

A. 115 A, 80 A
B. 81.33 A, 36.2 A
C. 36.2 A, 0 A
D. 81.33 A, 0 A
Answer» E.
Discussion
4.

A single phase full bridge inverter circuit, has load R = 2 and dc source Vs = 230 V. Find the value of power delivered to the load in watts only due to the fundamental component of the load current.

A. 5361.5 W
B. 2142.5 W
C. 21424.5 W
D. 214.2 W
Answer» D. 214.2 W
Discussion
5.

A single phase full bridge inverter has load R = 2 , and dc voltage source Vs = 230 V. Find the rms value of the fundamental load current.

A. 96 A
B. 0 A
C. 103 A
D. none of the mentioned
Answer» D. none of the mentioned
Discussion