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 ? Snubber circuit. Fast acting current limiting device (FACL fuse). CB. Voltage clamping device. Snubber circuit. Fast acting current limiting device (FACL fuse). CB. Voltage clamping device. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Under over voltage condition impedance offered by the voltage clamping device is infinity. high. low. moderate. infinity. high. low. moderate. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics In reverse blocking mode of a thyristor junction J1, J3 is in reverse bias and J2 is in forward bias. junction J2 is in reverse bias and J1, J3 is in forward bias. junction J1 and J2 is in forward bias and J3 is in reverse bias. junction J3 is in forward bias and J1, J2 in reverse bias. junction J1, J3 is in reverse bias and J2 is in forward bias. junction J2 is in reverse bias and J1, J3 is in forward bias. junction J1 and J2 is in forward bias and J3 is in reverse bias. junction J3 is in forward bias and J1, J2 in reverse bias. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Which one is most suitable power device for high frequency (>100 KHz) switching application? Microwave transistor. Power MOSFET. BJT. Schottky diode. Microwave transistor. Power MOSFET. BJT. Schottky diode. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Compared to transistor, ______________ have lower on state conduction losses and higher power handling capability Semi conductor diodes. MOSFETs. Thyristor. TRIACs. Semi conductor diodes. MOSFETs. Thyristor. TRIACs. 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 0. < latching current but greater than holding current and gate signal is present. both (A) and (B). less than holding current. < latching current but greater than holding current and gate signal is 0. < latching current but greater than holding current and gate signal is present. ANSWER DOWNLOAD EXAMIANS APP
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