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Power Electronics

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

 500 VA.
 100 KVA.
  2 KVA.
 1 KVA.

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Power Electronics
Calculate the maximum voltage that can be safely blocked by the string shown in figure, if maximum allowable leakage current is 2 mA?

 6 KV.
  8 KV.
 10 KV.
 2 KV.

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Power Electronics
Materials used in heat sink should have

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

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Power Electronics
A diac has ___________ terminals.

Three
None of these
Two
Four

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Power Electronics
What may happen high dV / dt?

 Breakdown of J2 junction.
 Anyone of these.
 Unwanted turn ON.
  Both A and B.

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Power Electronics
A diac has ___________ pn junctions

Two
Four
None of these
Three

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