Power Electronics 60 thyrsistors are connected in series and parallel to form a 10 KV and 5.5 KA switch. Each thyristor is rated for 1.2 KV, 1 KA. The no. of parallel path are 6. The efficiency of the switch is 91.6 %. 76.3 %. 83.3 %. 90.9 %. 91.6 %. 76.3 %. 83.3 %. 90.9 %. 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 145 μs. 130 μs. 140 μs. 135 μs. 145 μs. 130 μs. 140 μs. 135 μs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Materials used in heat sink should have high melting point. All of these. high thermal conductivity. large surface area. high melting point. All of these. high thermal conductivity. large surface area. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Which triggering is the most reliable? Gate triggering. Thermal triggering. dV / dt triggering. Forward voltage triggering. Gate triggering. Thermal triggering. dV / dt triggering. Forward voltage triggering. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics In a UJT, the p-type emitter is ___________ doped Lightly Moderately None of these Heavily Lightly Moderately None of these Heavily 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? 600 V/µs. 1000 V/µs. 1200 V/µs. 800 V/µs. 600 V/µs. 1000 V/µs. 1200 V/µs. 800 V/µs. ANSWER DOWNLOAD EXAMIANS APP
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