Power Electronics Latching current for an SCR inserted between a dc voltage source of 200 V and load is 100 mA. Compute the minimum rate of width pulse required to turn ON the SCR in case load consists of R = 20 Ω in series with L = 0.2 H. 150 µs. 300 µs. 100 µs. 200 µs. 150 µs. 300 µs. 100 µs. 200 µs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Which triggering is the most reliable? Gate triggering. dV / dt triggering. Forward voltage triggering. Thermal triggering. Gate triggering. dV / dt triggering. Forward voltage triggering. Thermal triggering. 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 ? Fast acting current limiting device (FACL fuse). Voltage clamping device. Snubber circuit. CB. Fast acting current limiting device (FACL fuse). Voltage clamping device. Snubber circuit. CB. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics For an SCR gate cathode characteristic is a straight line of 130. For triggered source volume of 15 V and allowable gate power dissipation of 0.5 W compute the gate source resistance? 11.19 ohm 108 ohm 111.9 ohm 115 ohm 11.19 ohm 108 ohm 111.9 ohm 115 ohm ANSWER DOWNLOAD EXAMIANS APP
Power Electronics After proper turn on of thyristor None of these gate signal should present but can be removed. gate signal is always present. gate signal must be removed. None of these gate signal should present but can be removed. gate signal is always present. gate signal must be removed. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Leakage current flows through the thyristor in both forward and reverse blocking mode. forward blocking mode. forward conduction mode. reverse blocking mode. both forward and reverse blocking mode. forward blocking mode. forward conduction mode. reverse blocking mode. ANSWER DOWNLOAD EXAMIANS APP
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