Power Electronics What is used to protect a thyristor from high di / dt conditions? Inductor. Fuse. Voltage clamping device. Snubber circuit. Inductor. Fuse. Voltage clamping device. Snubber circuit. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A UJT has ___________. None of these Three pn junctions One pn junction Two pn junctions None of these Three pn junctions One pn junction Two pn junctions ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Spread time is defined as the interval during which anode current rises from 90 % to its final value. anode voltage drops from 10 % of its initial value to zero. both (A) and (B). anode current rises from 10 % to 90 % of its final value. anode current rises from 90 % to its final value. anode voltage drops from 10 % of its initial value to zero. both (A) and (B). anode current rises from 10 % to 90 % of its final value. 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 180°. 30° to 150°. 60° to 120°. 60° to 180°. 30° to 180°. 30° to 150°. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A string of n parallel SCRs is operated at 72 KA, the rating of each SCR is 1 KA. If derating factor of the string is 0.1. Then calculate the value of n 80. 60. 70. 90. 80. 60. 70. 90. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Which of the following is used in heat sink? Aluminium. Iron. Silver. Carbon. Aluminium. Iron. Silver. Carbon. ANSWER DOWNLOAD EXAMIANS APP
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