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 SCR will be turned off when anode current is both (A) and (B). less than holding current. < latching current but greater than holding current and gate signal is present. < latching current but greater than holding current and gate signal is 0. both (A) and (B). less than holding current. < latching current but greater than holding current and gate signal is present. < latching current but greater than holding current and gate signal is 0. ANSWER DOWNLOAD EXAMIANS APP
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. 135 μs. 145 μs. 140 μs. 130 μs. 135 μs. 145 μs. 140 μs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics What happen due to high di / dt? Breakdown of junction. Local hot spot. Insulation failure. None of these. Breakdown of junction. Local hot spot. Insulation failure. None of these. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Which statement is true for latching current ? It is related to turn on process of the device. It is related to conduction process of device. Both C and D. It is related to turn off process of the device. It is related to turn on process of the device. It is related to conduction process of device. Both C and D. It is related to turn off process of the device. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Practical way of obtaining static voltage equalization in series connected SCRs is by the use of resistors of different values across each SCR. one resistor across the string. one resistor in series with each SCR. resistors of the same value across each SCR. resistors of different values across each SCR. one resistor across the string. one resistor in series with each SCR. resistors of the same value across each SCR. ANSWER DOWNLOAD EXAMIANS APP
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