Power Electronics Which of the following is used in heat sink? Silver. Aluminium. Iron. Carbon. Silver. Aluminium. Iron. Carbon. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A single phase full bridge inverter can operated in load commutation mode in case load consist of RL. RLC overdamped. RLC critically damped. RLC underdamped. RL. RLC overdamped. RLC critically damped. RLC underdamped. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A diac is turned on by ___________. None of these A breakover voltage Gate voltage Gate current None of these A breakover voltage Gate voltage Gate current ANSWER DOWNLOAD EXAMIANS APP
Power Electronics When a large surge current of very short duration flows through a thyristor then which one of the following device will operate to protect the thyristor ? Voltage clamping device. CB. Fast acting current limiting device (FACL fuse). Snubber circuit. Voltage clamping device. CB. Fast acting current limiting device (FACL fuse). Snubber circuit. 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 4, 6. 6, 4. 5, 7. 7, 5. 4, 6. 6, 4. 5, 7. 7, 5. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics 4 thyristors rated 200 V in series. The operating voltage of the string is 0.600 V. Derating factor of the string is 0.2. 0.75. 0.7. 0.25. 0.2. 0.75. 0.7. 0.25. ANSWER DOWNLOAD EXAMIANS APP
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