Power Electronics The latching current of SCR is 20 mA. Its holding current will be 40 mA. 60 mA. 23 mA. 10 mA. 40 mA. 60 mA. 23 mA. 10 mA. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics CB used for over current protection of thyristor operates when the fault current is of short duration. neither (A) nor (B). of long period. both (A) and (B). of short duration. neither (A) nor (B). of long period. both (A) and (B). ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The capacitance of reversed bised junction J2 in a thyristor is CJ2 = 20 pF and can be assumed to be independant of the off state voltage. The limiting value of the charging current to turn on the thyristor is 16 mA. What is the critical value of dv/dt? 1000 V/µs. 800 V/µs. 600 V/µs. 1200 V/µs. 1000 V/µs. 800 V/µs. 600 V/µs. 1200 V/µs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics How can we protect SCR from thermal conditions ? Using CB and fuse. Using heat sink. Using equalizing circuit. Use of snubber circuit. Using CB and fuse. Using heat sink. Using equalizing circuit. Use of snubber circuit. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A power semiconductor may undergo damage due to High dv/dt. Low dv/dt. Low di/dt. High di/dt. High dv/dt. Low dv/dt. Low di/dt. High di/dt. ANSWER DOWNLOAD EXAMIANS APP
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
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