Power Electronics The turn-on time of an SCR with inductive load is 20 µs. The puls train frequency is 2.5 KHz with a mark/space ratio of 1/10, then SCR will Turn on if pulse frequency us increased to two times. Turn on if inductance is removed. Turn on. Not turn on. Turn on if pulse frequency us increased to two times. Turn on if inductance is removed. Turn on. Not turn on. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics What happen due to high di / dt? None of these. Breakdown of junction. Insulation failure. Local hot spot. None of these. Breakdown of junction. Insulation failure. Local hot spot. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics 4 thyristors rated 200 V in series. The operating voltage of the string is 0.600 V. Derating factor of the string is 0.2. 0.25. 0.7. 0.75. 0.2. 0.25. 0.7. 0.75. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A power MOSFET has three terminals called Drain, source and base. Drain, source and gate. Collector, emitter and gate. Collector, emitter and base. Drain, source and base. Drain, source and gate. Collector, emitter and gate. Collector, emitter and base. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics During which time maximum conduction spreading take place in the thyristor during turn ON? Spread time. Delay time. Rise time. Same for every case. Spread time. Delay time. Rise time. Same for every case. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Which of the following is disadvantage of fast recovery diodes? Recovery is only 50 µs. Recovery is only 5 µs. Doping is carried out. None of these. Recovery is only 50 µs. Recovery is only 5 µs. Doping is carried out. None of these. ANSWER DOWNLOAD EXAMIANS APP
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