Power Electronics The latching current of SCR is 20 mA. Its holding current will be 60 mA. 40 mA. 23 mA. 10 mA. 60 mA. 40 mA. 23 mA. 10 mA. ANSWER DOWNLOAD EXAMIANS APP
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 30° to 180°. 30° to 150°. 60° to 180°. 60° to 120°. 30° to 180°. 30° to 150°. 60° to 180°. 60° to 120°. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A thyristor string is made of a no. of SCR connected in series and parallel. The string have volume and current of 11 KV and 4 KA. The voltage and current rating of available SCRs are 1800 V and 1000 A. For a string efficiency of 90 % let the number of SCRs in series and parallel are a and b respectively. Then the value of a and b will be 5, 7. 6, 4. 7, 5. 4, 6. 5, 7. 6, 4. 7, 5. 4, 6. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Figure shows two thyristors rated 400 A sharing a load current. Current through T2 is 180A. Current through T1 will be 120 A. 100 A. 110 A. 150 A. 120 A. 100 A. 110 A. 150 A. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A Triac has three terminals viz ___________ Drain, source, gate Two main terminal and a gate terminal None of these Cathode, anode, gate Drain, source, gate Two main terminal and a gate terminal None of these Cathode, anode, gate ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Which statement is true for latching current ? It is related to turn on process of the device. Both C and D. It is related to turn off process of the device. It is related to conduction process of device. It is related to turn on process of the device. Both C and D. It is related to turn off process of the device. It is related to conduction process of device. ANSWER DOWNLOAD EXAMIANS APP
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