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Power Electronics
Spread time is defined as the interval during which
anode voltage drops from 10 % of its initial value to zero.
anode current rises from 10 % to 90 % of its final value.
both (A) and (B).
anode current rises from 90 % to its final value.
anode voltage drops from 10 % of its initial value to zero.
anode current rises from 10 % to 90 % of its final value.
both (A) and (B).
anode current rises from 90 % to its final value.
Answer
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Related Question
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
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Power Electronics
The V-I characteristics for a triac in the first and third quadrants are essentially identical to those of ___________ in its first quadrant
None of these
SCR
UJT
Transistor
None of these
SCR
UJT
Transistor
Answer
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Power Electronics
In reverse blocking mode of a thyristor
junction J2 is in reverse bias and J1, J3 is in forward bias.
junction J3 is in forward bias and J1, J2 in reverse bias.
junction J1 and J2 is in forward bias and J3 is 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 J3 is in forward bias and J1, J2 in reverse bias.
junction J1 and J2 is in forward bias and J3 is in reverse bias.
junction J1, J3 is in reverse bias and J2 is in forward bias.
Answer
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Power Electronics
Leakage current flows through the thyristor in
forward blocking mode.
both forward and reverse blocking mode.
forward conduction mode.
reverse blocking mode.
forward blocking mode.
both forward and reverse blocking mode.
forward conduction mode.
reverse blocking mode.
Answer
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Power Electronics
Snubber circuit is used with SCR
either series or parallel.
anti parallel.
in parallel.
in series.
either series or parallel.
anti parallel.
in parallel.
in series.
Answer
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