Power Electronics A UJT has ___________. Three pn junctions None of these Two pn junctions One pn junction Three pn junctions None of these Two pn junctions One pn junction ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The typical time of rising time lies between 40 - 60 µs. 10 - 20 µs. 90 - 100 µs. 1 - 4 µs. 40 - 60 µs. 10 - 20 µs. 90 - 100 µs. 1 - 4 µs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The capacitance of reversed bised junction J2 in a thyristor is CJ2 = 20 pF and can be assumed to be independant of the off state voltage. The limiting value of the charging current to turn on the thyristor is 16 mA. What is the critical value of dv/dt? 800 V/µs. 1000 V/µs. 1200 V/µs. 600 V/µs. 800 V/µs. 1000 V/µs. 1200 V/µs. 600 V/µs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics What happen due to high di / dt? None of these. Insulation failure. Breakdown of junction. Local hot spot. None of these. Insulation failure. Breakdown of junction. Local hot spot. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A Triac has three terminals viz ___________ Cathode, anode, gate Drain, source, gate Two main terminal and a gate terminal None of these Cathode, anode, gate Drain, source, gate Two main terminal and a gate terminal None of these ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Thyristor can be protected from over voltages by using heat sink. voltage clamping device. fuse. snubber circuit. heat sink. voltage clamping device. fuse. snubber circuit. ANSWER DOWNLOAD EXAMIANS APP
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