Power Electronics After peak point, the UJT operates in the ___________ region. Negative resistance Saturation Cut-off None of these Negative resistance Saturation Cut-off None of these ANSWER DOWNLOAD EXAMIANS APP
Power Electronics After proper turn on of thyristor gate signal should present but can be removed. None of these gate signal is always present. gate signal must be removed. gate signal should present but can be removed. None of these gate signal is always present. gate signal must be removed. 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 Which one is most suitable power device for high frequency (>100 KHz) switching application? BJT. Microwave transistor. Schottky diode. Power MOSFET. BJT. Microwave transistor. Schottky diode. Power MOSFET. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Rise time is defined by the interval when gate current rises from 90 % to 100 % of it final value. anode voltage drops from 90 % to 10 % of its initial value. both B and C. anode current rises 10 % to 90 % of its final value. gate current rises from 90 % to 100 % of it final value. anode voltage drops from 90 % to 10 % of its initial value. both B and C. anode current rises 10 % to 90 % of its final value. 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. 0.25. 0.7. 0.2. 0.75. 0.25. 0.7. ANSWER DOWNLOAD EXAMIANS APP
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