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 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. 200 µs. 100 µs. 150 µs. 300 µs. 200 µs. 100 µs. 150 µs. 300 µs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The maximum di/dt in a SCR is Directly proportional to supply voltage. Inversely proportional to supply voltage. Both A and B. Directly proportional to inductance in the circuit. Directly proportional to supply voltage. Inversely proportional to supply voltage. Both A and B. Directly proportional to inductance in the circuit. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics 60 thyrsistors are connected in series and parallel to form a 10 KV and 5.5 KA switch. Each thyristor is rated for 1.2 KV, 1 KA. The no. of parallel path are 6. The efficiency of the switch is 83.3 %. 76.3 %. 91.6 %. 90.9 %. 83.3 %. 76.3 %. 91.6 %. 90.9 %. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics During gate recovery time charge carriers of J3 junction is removed. charge carriers of J2 junction is swept out. charge carrier of J1 junction removed. charge carriers of J2 junction recombined. charge carriers of J3 junction is removed. charge carriers of J2 junction is swept out. charge carrier of J1 junction removed. charge carriers of J2 junction recombined. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Typical range of thyristor turn OFF time is 3 - 100 µs. 3 - 500 µs. 3 - 50 µs. 3 - 10 µs. 3 - 100 µs. 3 - 500 µs. 3 - 50 µs. 3 - 10 µs. ANSWER DOWNLOAD EXAMIANS APP
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