Power Electronics Which of following is normally ON device SIT. BJT. TRIAC. IGBT. SIT. BJT. TRIAC. IGBT. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics What is used to protect the SCR from over current ? Voltage clamping device. CB and fuse. Snubber circuit. Heat sink. Voltage clamping device. CB and fuse. Snubber circuit. Heat sink. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The reverse recovery time of diode is trr = 3 μs and the rate off all of the diode current is di/dt = 30 A/μs. The storage charge current QRR is 130 μs. 135 μs. 145 μs. 140 μs. 130 μs. 135 μs. 145 μs. 140 μs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics When a large surge current of very short duration flows through a thyristor then which one of the following device will operate to protect the thyristor ? Voltage clamping device. Fast acting current limiting device (FACL fuse). Snubber circuit. CB. Voltage clamping device. Fast acting current limiting device (FACL fuse). Snubber circuit. CB. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A diac is ___________ switch A d.c. None of these An c. A mechanical A d.c. None of these An c. A mechanical ANSWER DOWNLOAD EXAMIANS APP
Power Electronics By which one of the following we can measure the reliability of a string? Factor of safety. Derating factor. Reliability factor. String efficient. Factor of safety. Derating factor. Reliability factor. String efficient. ANSWER DOWNLOAD EXAMIANS APP
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