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Power Electronics

Power Electronics
A diac has ___________ terminals.

None of these
Two
Three
Four

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Power Electronics
SITH is also known as

 None of these.
 Silicon controlled rectifier.
 Filled controlled rectifier.
  Filled controlled diode.

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Power Electronics
Thermal voltage VT can be given by

 (K2/q)(T + 1/T - 1).
 qT/K.
 KT/q.
  Kq/T.

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Power Electronics
The reverse recovery time of diode is trr = 3 μs and the rate off all of the diode current is di/dt = 30 A/μs. The storage charge current QRR is

 130 μs.
  135 μs.
 140 μs.
 145 μs.

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Power Electronics
A Triac has three terminals viz ___________

Two main terminal and a gate terminal
Cathode, anode, gate
None of these
Drain, source, gate

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Power Electronics
The device that exhibits negative resistance region is ___________.

Triac
Diac
Transistor
UJT

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