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 When the emitter terminal of a UJT is open, the resistance between the base terminal is generally ___________. Low Extremely low High None of these Low Extremely low High None of these ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Why resistor is used in Snubber circuit ? To minimize the loss . To minimize the charging current. To minimize the discharging current. All of these. To minimize the loss . To minimize the charging current. To minimize the discharging current. All of these. 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). both (A) and (B). of long period. of short duration. neither (A) nor (B). both (A) and (B). of long period. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The UJT may be used as ___________. A rectifier A sawtooth generator Am amplifier None of these A rectifier A sawtooth generator Am amplifier None of these ANSWER DOWNLOAD EXAMIANS APP
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. 80. 60. 90. 70. 80. 60. ANSWER DOWNLOAD EXAMIANS APP
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