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 A GTO can be turned on by applying Positive source signal. None of these. Positive gate signal. Positive drain signal. Positive source signal. None of these. Positive gate signal. Positive drain signal. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Dynamic equalizing circuit is used for 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. equal division of voltage across each thyristor in parallel. equal division of current through each thyristor in series. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics When a UJT is turned ON, the resistance between emitter terminal and lower base terminal ___________ Is increased Remains the same None of these Is decreased Is increased Remains the same None of these Is decreased ANSWER DOWNLOAD EXAMIANS APP
Power Electronics How can we protect SCR from thermal conditions ? Using heat sink. Using CB and fuse. Using equalizing circuit. Use of snubber circuit. Using heat sink. Using CB and fuse. Using equalizing circuit. Use of snubber circuit. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A 200 A thyristor is to be operated in parallel with a 300 A thyristor. The ON state voltage drops are 1.5 V and 1.2 Volts. What is the value of resistance R to be connected in series with each thyristor, so that current through the combination is 500 A and each of them is fully loaded ? 0.3 ohm 0.3 ohm 0.03 ohm 3.0 ohm 0.3 ohm 0.3 ohm 0.03 ohm 3.0 ohm ANSWER DOWNLOAD EXAMIANS APP
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