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Power Electronics

Power Electronics
If holding current of a thyristor is 2 mA then latching current should be

 0.009 A.
 0.01 A.
 0.002 A.
  0.004 A.

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Power Electronics
A diac is ___________ switch

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

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Power Electronics
Materials used in heat sink should have

  All of these.
 high melting point.
 large surface area.
 high thermal conductivity.

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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.

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Power Electronics
The latching current of SCR is 20 mA. Its holding current will be

 60 mA.
 23 mA.
  10 mA.
 40 mA.

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

Triac
Diac
FET
SCR

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