Power Electronics The typical time of rising time lies between 90 - 100 µs. 10 - 20 µs. 1 - 4 µs. 40 - 60 µs. 90 - 100 µs. 10 - 20 µs. 1 - 4 µs. 40 - 60 µs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The V-I characteristics for a triac in the first and third quadrants are essentially identical to those of ___________ in its first quadrant Transistor UJT SCR None of these Transistor UJT SCR None of these ANSWER DOWNLOAD EXAMIANS APP
Power Electronics What happen due to high di / dt? Breakdown of junction. None of these. Insulation failure. Local hot spot. Breakdown of junction. None of these. Insulation failure. Local hot spot. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics When the emitter terminal of a UJT is open, the resistance between the base terminal is generally ___________. Extremely low None of these High Low Extremely low None of these High Low 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 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 In reverse blocking mode of a thyristor junction J1 and J2 is in forward bias and J3 is in reverse bias. junction J3 is in forward bias and J1, J2 in reverse bias. junction J2 is in reverse bias and J1, J3 is in forward bias. junction J1, J3 is in reverse bias and J2 is in forward bias. junction J1 and J2 is in forward bias and J3 is in reverse bias. junction J3 is in forward bias and J1, J2 in reverse bias. junction J2 is in reverse bias and J1, J3 is in forward bias. junction J1, J3 is in reverse bias and J2 is in forward bias. ANSWER DOWNLOAD EXAMIANS APP
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