Power Electronics Which following is a two terminal three layer device? BJT. None of above. Power dioed. MOSFET. BJT. None of above. Power dioed. MOSFET. ANSWER DOWNLOAD EXAMIANS APP
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. Turn on if inductance is removed. Not turn on. Turn on if pulse frequency us increased to two times. Turn on. Turn on if inductance is removed. Not turn on. Turn on if pulse frequency us increased to two times. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics What may happen high dV / dt? Anyone of these. Both A and B. Unwanted turn ON. Breakdown of J2 junction. Anyone of these. Both A and B. Unwanted turn ON. Breakdown of J2 junction. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A thyristor string is made of a no. of SCR connected in series and parallel. The string have volume and current of 11 KV and 4 KA. The voltage and current rating of available SCRs are 1800 V and 1000 A. For a string efficiency of 90 % let the number of SCRs in series and parallel are a and b respectively. Then the value of a and b will be 5, 7. 4, 6. 6, 4. 7, 5. 5, 7. 4, 6. 6, 4. 7, 5. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Thyristor can be protected from over voltages by using voltage clamping device. snubber circuit. fuse. heat sink. voltage clamping device. snubber circuit. fuse. heat sink. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics By which one of the following we can measure the reliability of a string? Reliability factor. Factor of safety. String efficient. Derating factor. Reliability factor. Factor of safety. String efficient. Derating factor. ANSWER DOWNLOAD EXAMIANS APP
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