Power Electronics Multiple Choice Questions
Power Electronics Multiple Choice Questions 1) Which of the given device is the fastest switching device MOSFET Triode BJT JEFT Answer: a Explanation: The term MOSFET stands for Metal Oxide Semiconductor Field Effect Transistor. It is one of the most common transistors in digital electronics. It is a majority charge carrier device with the fastest switching because it does not have minority charge carriers which take more time in settling down. 2) A snubber circuit is used to Limit the rate of rising in voltage across BJT Limit the rate of rising in voltage across SCR Limit the rate of rising in current across TRIAC Limit the rate of rising in current across BJT Answer: b Explanation: Snubber circuit refers to a kind of DV/dt protection circuit of the thyristor. It is used to limit the high rate of change of voltage from cathode to anode. It is usually used to protect SCR thyristor from high DV/dt and di/dt stress. 3) If the maximum value of applied voltage for a full-wave c...