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°. 60° to 120°. 30° to 180°. 30° to 150°. 60° to 180°. 60° to 120°. 30° to 180°. 30° to 150°. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics CB used for over current protection of thyristor operates when the fault current is neither (A) nor (B). of long period. both (A) and (B). of short duration. neither (A) nor (B). of long period. both (A) and (B). of short duration. 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? 3.2 µs 3.3 µs 3 µs. 3.1 µs 3.2 µs 3.3 µs 3 µs. 3.1 µs ANSWER DOWNLOAD EXAMIANS APP
Power Electronics ON state voltage drop across SCR lie between the range 1 - 1.5 V. 1.5 - 2 V. 0 - 0.5 V. 0.5 - 1 V. 1 - 1.5 V. 1.5 - 2 V. 0 - 0.5 V. 0.5 - 1 V. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Which statement is true for latching current ? It is related to turn off process of the device. It is related to turn on process of the device. Both C and D. It is related to conduction process of device. It is related to turn off process of the device. It is related to turn on process of the device. Both C and D. It is related to conduction process of device. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics SCR will be turned off when anode current is < latching current but greater than holding current and gate signal is 0. < latching current but greater than holding current and gate signal is present. both (A) and (B). less than holding current. < latching current but greater than holding current and gate signal is 0. < latching current but greater than holding current and gate signal is present. both (A) and (B). less than holding current. ANSWER DOWNLOAD EXAMIANS APP
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