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 180°. 30° to 150°. 30° to 180°. 60° to 120°. 60° to 180°. 30° to 150°. 30° to 180°. 60° to 120°. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics For series connected SCR’s dynamic equalising circuit consists of R and C in series but with diode across R. series R and diode with C across R. series R and diode with C across R. R and C in series but with diode across C. R and C in series but with diode across R. series R and diode with C across R. series R and diode with C across R. R and C in series but with diode across C. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A power MOSFET has three terminals called Collector, emitter and gate. Drain, source and gate. Drain, source and base. Collector, emitter and base. Collector, emitter and gate. Drain, source and gate. Drain, source and base. Collector, emitter and base. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Under over voltage condition impedance offered by the voltage clamping device is low. moderate. infinity. high. low. moderate. infinity. high. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics IGBT combines the advantages of BJTs and SITs. SITs and MOSFETs. BJTs and MOSFETs. None of these. BJTs and SITs. SITs and MOSFETs. BJTs and MOSFETs. None of these. 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 6, 4. 5, 7. 7, 5. 4, 6. 6, 4. 5, 7. 7, 5. 4, 6. ANSWER DOWNLOAD EXAMIANS APP
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