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 130 μs. 145 μs. 140 μs. 135 μs. 130 μs. 145 μs. 140 μs. 135 μs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Which of the following is disadvantage of fast recovery diodes? Recovery is only 50 µs. None of these. Doping is carried out. Recovery is only 5 µs. Recovery is only 50 µs. None of these. Doping is carried out. Recovery is only 5 µs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics After proper turn on of thyristor None of these gate signal is always present. gate signal should present but can be removed. gate signal must be removed. None of these gate signal is always present. gate signal should present but can be removed. gate signal must be removed. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Under normal operating condition voltage clamping device offers impedance of moderate value. low value. zero value. high value. moderate value. low value. zero value. high value. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Delay time is defined by the interval when anode voltage drops from 100 % to 90 % of its actual value. all of these. anode current reaches 10 % from forward leakage current. gate current increases from 90 % to 100 % of its final value. anode voltage drops from 100 % to 90 % of its actual value. all of these. anode current reaches 10 % from forward leakage current. gate current increases from 90 % to 100 % of its final value. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics When the emitter terminal of a UJT is open, the resistance between the base terminal is generally ___________. High None of these Extremely low Low High None of these Extremely low Low ANSWER DOWNLOAD EXAMIANS APP
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