Explore topic-wise MCQs in Power Electronics.

This section includes 4 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_LOAD_OF_R_=_60_‚ÄÖ√Ñ√∂‚ÀÖ√´¬¨‚ÀÇ_IS_FED_FROM_1PHASE,_230_V,_50_HZ_SUPPLY_THROUGH_A_STEP-UP_TRANSFORMER_&_THAN_A_DIODE._THE_TRANSFORMER_TURNS_RATIO_=_2._THE_POWER_DELIVERED_TO_THE_LOAD_IS?$#

A. 614 Watts
B. 714 Watts
C. 814 Watts
D. 914 Watts
Answer» C. 814 Watts
Discussion
2.

The rectification efficiency for B-2 type & M-2 type full wave diode rectifiers are ___ & ___ respectively?

A. 8/π & 4/π
B. 4/π & 8/π
C. 8/π & 8/π
D. 4/π & 4/π
Answer» D. 4/‚âà√¨‚àö√ë & 4/‚âà√¨‚àö√ë
Discussion
3.

For a single phase, full bridge, diode rectifier excited from a 230 V, 50 Hz source. With R = 10 Ω & the inductance(L) large enough to maintain continuous conduction, the value of the supply power factor will be$

A. 0.707 lag
B. 0.9 lag
C. 0.86 lag
D. Unity
Answer» C. 0.86 lag
Discussion
4.

For a single phase, full bridge, diode rectifier excited from a 230 V, 50 Hz source. With R = 10 Ω & the inductance(L) large enough to maintain continues conduction, the average and rms values of diode currents will be$

A. 7.85 A, 8 A
B. 10.35 A, 7.85 A
C. 10.35 A, 14.6 A
D. 8 A, 8 A
Answer» D. 8 A, 8 A
Discussion