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 90. 70. 60. 80. 90. 70. 60. 80. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A triac has ___________ semiconductor layers. Four Two Five Three Four Two Five Three ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A diac has ___________ terminals. Three Four Two None of these Three Four Two None of these ANSWER DOWNLOAD EXAMIANS APP
Power Electronics When a UJT is turned ON, the resistance between emitter terminal and lower base terminal ___________ None of these Is increased Remains the same Is decreased None of these Is increased Remains the same Is decreased ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Calculate the maximum voltage that can be safely blocked by the string shown in figure, if maximum allowable leakage current is 2 mA? 8 KV. 10 KV. 2 KV. 6 KV. 8 KV. 10 KV. 2 KV. 6 KV. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics How can we protect SCR from thermal conditions ? Use of snubber circuit. Using equalizing circuit. Using CB and fuse. Using heat sink. Use of snubber circuit. Using equalizing circuit. Using CB and fuse. Using heat sink. ANSWER DOWNLOAD EXAMIANS APP
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