Power Electronics A step up chopper has input voltage 110 V and output voltage 150 V. The value of duty cycle is 0.32. 0.67. 0.27. 0.45. 0.32. 0.67. 0.27. 0.45. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Latching current for an SCR inserted between a dc voltage source of 200 V and load is 100 mA. Compute the minimum rate of width pulse required to turn ON the SCR in case load consists of R = 20 Ω in series with L = 0.2 H. 150 µs. 100 µs. 200 µs. 300 µs. 150 µs. 100 µs. 200 µs. 300 µs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A diac is turned on by ___________. A breakover voltage Gate current None of these Gate voltage A breakover voltage Gate current None of these Gate voltage 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. 5, 7. 6, 4. 7, 5. 4, 6. 5, 7. 6, 4. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics If a latching current for the circuit shown in figure is 2 mA. Obtain the value of minimum width of the property turn ON the SCR? 3 µs. 3.3 µs 3.2 µs 3.1 µs 3 µs. 3.3 µs 3.2 µs 3.1 µs ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A power semiconductor may undergo damage due to High di/dt. High dv/dt. Low di/dt. Low dv/dt. High di/dt. High dv/dt. Low di/dt. Low dv/dt. ANSWER DOWNLOAD EXAMIANS APP