Power Electronics If holding current of a thyristor is 2 mA then latching current should be 0.002 A. 0.01 A. 0.004 A. 0.009 A. 0.002 A. 0.01 A. 0.004 A. 0.009 A. 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 Switching frequency of SITH is 60 KHz. 5 KHz. 10 KHz. 100 KHz. 60 KHz. 5 KHz. 10 KHz. 100 KHz. ANSWER DOWNLOAD EXAMIANS APP
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 76.3 %. 90.9 %. 91.6 %. 83.3 %. 76.3 %. 90.9 %. 91.6 %. 83.3 %. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Materials used in heat sink should have high thermal conductivity. high melting point. All of these. large surface area. high thermal conductivity. high melting point. All of these. large surface area. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A power semiconductor may undergo damage due to Low di/dt. High di/dt. Low dv/dt. High dv/dt. Low di/dt. High di/dt. Low dv/dt. High dv/dt. ANSWER DOWNLOAD EXAMIANS APP
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