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°. 60° to 120°. 60° to 180°. 30° to 150°. 30° to 180°. 60° to 120°. 60° to 180°. 30° to 150°. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The function of snubber circuit connected across the SCR is to suppress dV / dt. decrease dV / dt. decrease di / dt. increase dV / dt. suppress dV / dt. decrease dV / dt. decrease di / dt. increase dV / dt. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The device that exhibits negative resistance region is ___________. Transistor Triac UJT Diac Transistor Triac UJT Diac ANSWER DOWNLOAD EXAMIANS APP
Power Electronics During reverse recovery time both B and C. charge carrier of junction J2 recombined. charge carrier of junction J1 is swept out. charge carrier of junction J3 is swept out. both B and C. charge carrier of junction J2 recombined. charge carrier of junction J1 is swept out. charge carrier of junction J3 is swept out. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics When a UJT is turned ON, the resistance between emitter terminal and lower base terminal ___________ Is decreased Is increased Remains the same None of these Is decreased Is increased Remains the same None of these ANSWER DOWNLOAD EXAMIANS APP
Power Electronics If a latching current for the circuit shown in figure is 2 mA. Obtain the value of minimum width of the property turn ON the SCR? 3.3 µs 3.1 µs 3 µs. 3.2 µs 3.3 µs 3.1 µs 3 µs. 3.2 µs ANSWER DOWNLOAD EXAMIANS APP
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