Power Electronics A diac is ___________ switch A d.c. None of these An c. A mechanical A d.c. None of these An c. A mechanical ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The function of snubber circuit connected across the SCR is to decrease di / dt. decrease dV / dt. increase dV / dt. suppress dV / dt. decrease di / dt. decrease dV / dt. increase dV / dt. suppress dV / dt. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A triac can pass a portion of ___________ half-cycle through the load. Both positive and negative Only positive None of these Only negative Both positive and negative Only positive None of these Only negative 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 180°. 60° to 120°. 30° to 150°. 60° to 180°. 30° to 180°. 60° to 120°. 30° to 150°. 60° to 180°. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics During which time maximum conduction spreading take place in the thyristor during turn ON? Rise time. Spread time. Delay time. Same for every case. Rise time. Spread time. Delay time. Same for every case. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics What may happen high dV / dt? Unwanted turn ON. Breakdown of J2 junction. Anyone of these. Both A and B. Unwanted turn ON. Breakdown of J2 junction. Anyone of these. Both A and B. ANSWER DOWNLOAD EXAMIANS APP
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