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Power Electronics

Power Electronics
A triac is a ___________ switch

None of these
Unidirectional
Mechanical
Bidirectional

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

 1 KVA.
  2 KVA.
 500 VA.
 100 KVA.

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Power Electronics
If a latching current for the circuit shown in figure is 2 mA. Obtain the value of minimum width of the property turn ON the SCR?

 3 µs.
 3.1 µs
 3.2 µs
  3.3 µs

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Power Electronics
What is used to protect a thyristor from high di / dt conditions?

  Inductor.
 Fuse.
 Snubber circuit.
 Voltage clamping device.

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Power Electronics
A UJT is sometimes called ___________ diode.

High resistance
Single-base
Double-base
Low resistance

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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?

 10 KV.
  8 KV.
 6 KV.
 2 KV.

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