Power Electronics Example of a voltage clamping device snubber circuit. aluminium block. metal oxide varistor. fast acting fuse. snubber circuit. aluminium block. metal oxide varistor. fast acting fuse. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A thyristor string is made of a no. of SCR connected in series and parallel. The string have volume and current of 11 KV and 4 KA. The voltage and current rating of available SCRs are 1800 V and 1000 A. For a string efficiency of 90 % let the number of SCRs in series and parallel are a and b respectively. Then the value of a and b will be 7, 5. 6, 4. 5, 7. 4, 6. 7, 5. 6, 4. 5, 7. 4, 6. 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? 10 KV. 6 KV. 8 KV. 2 KV. 10 KV. 6 KV. 8 KV. 2 KV. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Which of the following is used in heat sink? Iron. Carbon. Silver. Aluminium. Iron. Carbon. Silver. Aluminium. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics When a large surge current of very short duration flows through a thyristor then which one of the following device will operate to protect the thyristor ? Voltage clamping device. CB. Fast acting current limiting device (FACL fuse). Snubber circuit. Voltage clamping device. CB. Fast acting current limiting device (FACL fuse). Snubber circuit. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics By which one of the following we can measure the reliability of a string? Derating factor. Reliability factor. String efficient. Factor of safety. Derating factor. Reliability factor. String efficient. Factor of safety. ANSWER DOWNLOAD EXAMIANS APP
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