Power Electronics When a UJT is turned ON, the resistance between emitter terminal and lower base terminal ___________ Remains the same Is increased Is decreased None of these Remains the same Is increased Is decreased None of these 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 90.9 %. 91.6 %. 76.3 %. 83.3 %. 90.9 %. 91.6 %. 76.3 %. 83.3 %. 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 A triac is a ___________ switch Bidirectional None of these Mechanical Unidirectional Bidirectional None of these Mechanical Unidirectional ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A thyristor can termed as DC switch. AC switch. Both a and B. Square wave switch. DC switch. AC switch. Both a and B. Square wave switch. 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 60° to 120°. 60° to 180°. 30° to 150°. 30° to 180°. 60° to 120°. 60° to 180°. 30° to 150°. 30° to 180°. ANSWER DOWNLOAD EXAMIANS APP
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