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 70. 60. 90. 80. 70. 60. 90. 80. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A triac is a ___________ switch None of these Bidirectional Unidirectional Mechanical None of these Bidirectional Unidirectional Mechanical ANSWER DOWNLOAD EXAMIANS APP
Power Electronics During which time maximum conduction spreading take place in the thyristor during turn ON? Rise time. Same for every case. Delay time. Spread time. Rise time. Same for every case. Delay time. Spread time. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The V-I characteristics for a triac in the first and third quadrants are essentially identical to those of ___________ in its first quadrant Transistor UJT None of these SCR Transistor UJT None of these SCR ANSWER DOWNLOAD EXAMIANS APP
Power Electronics What is used to protect the SCR from over current ? Snubber circuit. CB and fuse. Voltage clamping device. Heat sink. Snubber circuit. CB and fuse. Voltage clamping device. Heat sink. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Light triggering mainly used in low - voltage direct current transmission. medium voltage direct current transmission. high voltage direct current transmission. all of these. low - voltage direct current transmission. medium voltage direct current transmission. high voltage direct current transmission. all of these. ANSWER DOWNLOAD EXAMIANS APP
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