Power Electronics 60 thyrsistors are connected in series and parallel to form a 10 KV and 5.5 KA switch. Each thyristor is rated for 1.2 KV, 1 KA. The no. of parallel path are 6. The efficiency of the switch is 83.3 %. 91.6 %. 76.3 %. 90.9 %. 83.3 %. 91.6 %. 76.3 %. 90.9 %. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics An SCR has half cycle surge current rating of 3000 A for 50 Hz supply. One cycle surge current will be 1500 A. 2121.32 A. 4242.64 A. 6000 A. 1500 A. 2121.32 A. 4242.64 A. 6000 A. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Anode current in an SCR consists of holes only. Both electron and holes. either electron or holes. electrons only. holes only. Both electron and holes. either electron or holes. electrons only. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics An SCR is considered to be a semi controlled device because it conducts only during one half cycle of an alternating current wave. it can be turned OFF but not ON with a gate pulse. it can be turned ON only during one half cycle of an AC. it can be turned ON but not OFF with a gate pulse. it conducts only during one half cycle of an alternating current wave. it can be turned OFF but not ON with a gate pulse. it can be turned ON only during one half cycle of an AC. it can be turned ON but not OFF with a gate pulse. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics What is used to protect a thyristor from high di / dt conditions? Snubber circuit. Fuse. Voltage clamping device. Inductor. Snubber circuit. Fuse. Voltage clamping device. Inductor. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics When a UJT is turned ON, the resistance between emitter terminal and lower base terminal ___________ None of these Remains the same Is increased Is decreased None of these Remains the same Is increased Is decreased ANSWER DOWNLOAD EXAMIANS APP
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