Power Electronics For an SCR gate cathode characteristic is a straight line of 130. For triggered source volume of 15 V and allowable gate power dissipation of 0.5 W compute the gate source resistance? 108 ohm 115 ohm 11.19 ohm 111.9 ohm 108 ohm 115 ohm 11.19 ohm 111.9 ohm ANSWER DOWNLOAD EXAMIANS APP
Power Electronics What is used to protect the SCR from over current ? Voltage clamping device. CB and fuse. Snubber circuit. Heat sink. Voltage clamping device. CB and fuse. Snubber circuit. Heat sink. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The typical time of rising time lies between 40 - 60 µs. 10 - 20 µs. 1 - 4 µs. 90 - 100 µs. 40 - 60 µs. 10 - 20 µs. 1 - 4 µs. 90 - 100 µs. 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. 4, 6. 6, 4. 5, 7. 7, 5. 4, 6. 6, 4. 5, 7. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics By which one of the following we can measure the reliability of a string? Factor of safety. Derating factor. String efficient. Reliability factor. Factor of safety. Derating factor. String efficient. Reliability factor. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A thyristor can termed as Square wave switch. Both a and B. DC switch. AC switch. Square wave switch. Both a and B. DC switch. AC switch. ANSWER DOWNLOAD EXAMIANS APP
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