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Power Electronics

Power Electronics
COOLMOS device can be used in application up to power range of

  2 KVA.
 100 KVA.
 1 KVA.
 500 VA.

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Power Electronics
The maximum di/dt in a SCR is

 Directly proportional to supply voltage.
 Inversely proportional to supply voltage.
  Both A and B.
 Directly proportional to inductance in the circuit.

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Power Electronics
Typical range of thyristor turn OFF time is

 3 - 500 µs.
 3 - 50 µs.
  3 - 100 µs.
 3 - 10 µs.

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Power Electronics
When the temperature increases, the inter-base resistance (RBB) of a UJT ___________.

Decreases
Remains the same
Increases
None of these

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Power Electronics
SITH is also known as

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

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Power Electronics
A diac is ___________ switch

An c.
A mechanical
A d.c.
None of these

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