Power Electronics Thermal voltage VT can be given by qT/K. Kq/T. (K2/q)(T + 1/T - 1). KT/q. qT/K. Kq/T. (K2/q)(T + 1/T - 1). KT/q. 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 if inductance is removed. Turn on if pulse frequency us increased to two times. Turn on. Not turn on. Turn on if inductance is removed. Turn on if pulse frequency us increased to two times. Turn on. Not turn on. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Calculate the maximum voltage that can be safely blocked by the string shown in figure, if maximum allowable leakage current is 2 mA? 8 KV. 2 KV. 10 KV. 6 KV. 8 KV. 2 KV. 10 KV. 6 KV. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics What happen due to high di / dt? Breakdown of junction. Local hot spot. None of these. Insulation failure. Breakdown of junction. Local hot spot. None of these. Insulation failure. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics What is used to protect the SCR from over current ? Voltage clamping device. Heat sink. Snubber circuit. CB and fuse. Voltage clamping device. Heat sink. Snubber circuit. CB and fuse. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Which of following is normally ON device BJT. TRIAC. SIT. IGBT. BJT. TRIAC. SIT. IGBT. ANSWER DOWNLOAD EXAMIANS APP
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