Power Electronics Which of the following is not a characteristic of UJT? Intrinsic stand off ratio Bilateral conduction Negative resistance Peak-point voltage Intrinsic stand off ratio Bilateral conduction Negative resistance Peak-point voltage ANSWER DOWNLOAD EXAMIANS APP
Power Electronics What is used to protect the SCR from over current ? Snubber circuit. CB and fuse. Voltage clamping device. Heat sink. Snubber circuit. CB and fuse. Voltage clamping device. Heat sink. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Dynamic equalizing circuit is used for equal division of voltage across each thyristor in parallel. equal division of current through each thyristor in series. equal division of current through each thyristor in parallel. equal division of voltage across each thyristor. equal division of voltage across each thyristor in parallel. equal division of current through each thyristor in series. equal division of current through each thyristor in parallel. equal division of voltage across each thyristor. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Which of the following is disadvantage of fast recovery diodes? Doping is carried out. Recovery is only 5 µs. None of these. Recovery is only 50 µs. Doping is carried out. Recovery is only 5 µs. None of these. Recovery is only 50 µs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Which triggering is the most reliable? Gate triggering. Forward voltage triggering. Thermal triggering. dV / dt triggering. Gate triggering. Forward voltage triggering. Thermal triggering. dV / dt triggering. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The turn-on time of an SCR with inductive load is 20 µs. The puls train frequency is 2.5 KHz with a mark/space ratio of 1/10, then SCR will Turn on. Turn on if inductance is removed. Turn on if pulse frequency us increased to two times. Not turn on. Turn on. Turn on if inductance is removed. Turn on if pulse frequency us increased to two times. Not turn on. ANSWER DOWNLOAD EXAMIANS APP
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