Power Electronics 4 thyristors rated 200 V in series. The operating voltage of the string is 0.600 V. Derating factor of the string is 0.25. 0.7. 0.2. 0.75. 0.25. 0.7. 0.2. 0.75. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics When the temperature increases, the inter-base resistance (RBB) of a UJT ___________. Decreases None of these Increases Remains the same Decreases None of these Increases Remains the same ANSWER DOWNLOAD EXAMIANS APP
Power Electronics After peak point, the UJT operates in the ___________ region. Negative resistance None of these Cut-off Saturation Negative resistance None of these Cut-off Saturation 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 150°. 60° to 180°. 30° to 180°. 60° to 120°. 30° to 150°. 60° to 180°. 30° to 180°. 60° to 120°. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics During which time maximum conduction spreading take place in the thyristor during turn ON? Rise time. Delay time. Spread time. Same for every case. Rise time. Delay time. Spread time. Same for every case. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics After proper turn on of thyristor None of these gate signal is always present. gate signal must be removed. gate signal should present but can be removed. None of these gate signal is always present. gate signal must be removed. gate signal should present but can be removed. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS