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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.
Voltage clamping device.
CB.
Fast acting current limiting device (FACL fuse).
Snubber circuit.
Voltage clamping device.
CB.
Fast acting current limiting device (FACL fuse).
Answer
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Related Question
Power Electronics
Power electronics essentially deals with control of a.c. power at ___________.
Frequencies above 20 kHz
Frequencies above 1000 kHz
Frequencies less than 10 Hz
50 Hz frequency
Frequencies above 20 kHz
Frequencies above 1000 kHz
Frequencies less than 10 Hz
50 Hz frequency
Answer
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Power Electronics
Which following is a two terminal three layer device?
None of above.
MOSFET.
Power dioed.
BJT.
None of above.
MOSFET.
Power dioed.
BJT.
Answer
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Power Electronics
Between the peak point and the valley point of UJT emitter characteristics we have ___________ region
None of these
Negative resistance
Cut-off
Saturation
None of these
Negative resistance
Cut-off
Saturation
Answer
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Power Electronics
The function of snubber circuit connected across the SCR is to
decrease di / dt.
decrease dV / dt.
increase dV / dt.
suppress dV / dt.
decrease di / dt.
decrease dV / dt.
increase dV / dt.
suppress dV / dt.
Answer
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Power Electronics
Which of following devices has highest di/dt and dv/dt capability?
SCR.
SIT.
SITH.
GTO.
SCR.
SIT.
SITH.
GTO.
Answer
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