Power Electronics CB used for over current protection of thyristor operates when the fault current is of long period. of short duration. both (A) and (B). neither (A) nor (B). of long period. of short duration. both (A) and (B). neither (A) nor (B). ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A triac can pass a portion of ___________ half-cycle through the load. Only negative None of these Both positive and negative Only positive Only negative None of these Both positive and negative Only positive ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Latching current for an SCR inserted between a dc voltage source of 200 V and load is 100 mA. Compute the minimum rate of width pulse required to turn ON the SCR in case load consists of R = 20 Ω in series with L = 0.2 H. 150 µs. 300 µs. 200 µs. 100 µs. 150 µs. 300 µs. 200 µs. 100 µs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A UJT has ___________. Three pn junctions One pn junction None of these Two pn junctions Three pn junctions One pn junction None of these Two pn junctions ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Under normal operating condition voltage clamping device offers impedance of zero value. low value. moderate value. high value. zero value. low value. moderate value. high 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 0.7. 0.25. 0.75. 0.2. 0.7. 0.25. 0.75. 0.2. ANSWER DOWNLOAD EXAMIANS APP
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