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Power Electronics

Power Electronics
A diac is turned on by ___________.

None of these
Gate voltage
Gate current
A breakover voltage

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Power Electronics
In a UJT, the p-type emitter is ___________ doped

None of these
Moderately
Lightly
Heavily

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Power Electronics
A triac can pass a portion of ___________ half-cycle through the load.

Only negative
Only positive
None of these
Both positive and negative

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Power Electronics
The device that does not have the gate terminal is ___________.

Triac
FET
Diac
SCR

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Power Electronics
Which of the following is used in SCR to protect from high dV / dt?

 Equalizing circuit.
 Circuit breaker.
  Snubber circuit.
 Fuse.

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Power Electronics
When a UJT is turned ON, the resistance between emitter terminal and lower base terminal ___________

Remains the same
Is increased
None of these
Is decreased

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