Power Electronics A single phase one pulse controlled circuit has a resistance R and counter emf E load 400 sin(314 t) as the source voltage. For a load counter emf of 200 V, the range of firing angle control is 60° to 120°. 30° to 180°. 30° to 150°. 60° to 180°. 60° to 120°. 30° to 180°. 30° to 150°. 60° to 180°. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A diac has ___________ terminals. Three None of these Two Four Three None of these Two Four ANSWER DOWNLOAD EXAMIANS APP
Power Electronics An SCR has half cycle surge current rating of 3000 A for 50 Hz supply. One cycle surge current will be 2121.32 A. 4242.64 A. 6000 A. 1500 A. 2121.32 A. 4242.64 A. 6000 A. 1500 A. 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 ? Snubber circuit. Fast acting current limiting device (FACL fuse). Voltage clamping device. CB. Snubber circuit. Fast acting current limiting device (FACL fuse). Voltage clamping device. CB. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Which of the following is disadvantage of fast recovery diodes? None of these. Doping is carried out. Recovery is only 5 µs. Recovery is only 50 µs. None of these. Doping is carried out. Recovery is only 5 µs. Recovery is only 50 µs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Which of following is normally ON device BJT. SIT. TRIAC. IGBT. BJT. SIT. TRIAC. IGBT. ANSWER DOWNLOAD EXAMIANS APP
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