Power Electronics The latching current of SCR is 20 mA. Its holding current will be 23 mA. 10 mA. 40 mA. 60 mA. 23 mA. 10 mA. 40 mA. 60 mA. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Between the peak point and the valley point of UJT emitter characteristics we have ___________ region None of these Negative resistance Cut-off Saturation None of these Negative resistance Cut-off Saturation 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 The reverse recovery time of diode is trr = 3 μs and the rate off all of the diode current is di/dt = 30 A/μs. The storage charge current QRR is 140 μs. 130 μs. 135 μs. 145 μs. 140 μs. 130 μs. 135 μs. 145 μs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Why resistor is used in Snubber circuit ? To minimize the charging current. To minimize the discharging current. To minimize the loss . All of these. To minimize the charging current. To minimize the discharging current. To minimize the loss . All of these. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A diac is turned on by ___________. Gate current Gate voltage A breakover voltage None of these Gate current Gate voltage A breakover voltage None of these ANSWER DOWNLOAD EXAMIANS APP
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