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). CB. Voltage clamping device. Snubber circuit. Fast acting current limiting device (FACL fuse). CB. Voltage clamping device. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Gate circuit or triggering circuit of a thyristor is high power circuit. may be low power or high power circuit. lower power circuit. magnetic circuit. high power circuit. may be low power or high power circuit. lower power circuit. magnetic circuit. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A 200 A thyristor is to be operated in parallel with a 300 A thyristor. The ON state voltage drops are 1.5 V and 1.2 Volts. What is the value of resistance R to be connected in series with each thyristor, so that current through the combination is 500 A and each of them is fully loaded ? 0.3 ohm 0.3 ohm 0.03 ohm 3.0 ohm 0.3 ohm 0.3 ohm 0.03 ohm 3.0 ohm ANSWER DOWNLOAD EXAMIANS APP
Power Electronics If holding current of a thyristor is 2 mA then latching current should be 0.009 A. 0.01 A. 0.002 A. 0.004 A. 0.009 A. 0.01 A. 0.002 A. 0.004 A. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The triac is ___________. Not a thyristor Like a bidirectional SCR A four-terminal device None of these Not a thyristor Like a bidirectional SCR A four-terminal device None of these ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The typical time of rising time lies between 40 - 60 µs. 10 - 20 µs. 90 - 100 µs. 1 - 4 µs. 40 - 60 µs. 10 - 20 µs. 90 - 100 µs. 1 - 4 µs. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS