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Power Electronics

Power Electronics
The latching current of GTO should be of order

  500 mA.
 1 A.
 100 mA.
 2 A.

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Power Electronics
A power semiconductor may undergo damage due to

 Low dv/dt.
 High dv/dt.
  High di/dt.
 Low di/dt.

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Power Electronics
When a UJT is turned ON, the resistance between emitter terminal and lower base terminal ___________

None of these
Is increased
Remains the same
Is decreased

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Power Electronics
A single phase full bridge inverter can operate in load commutation mode in case load consists of

  RLC underdamped.
 RLC critically damped.
 RLC overdamped.
 RL.

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Power Electronics
When a large surge current of very short duration flows through a thyristor then which one of the following device will operate to protect the thyristor ?

 CB.
  Fast acting current limiting device (FACL fuse).
 Voltage clamping device.
 Snubber circuit.

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Power Electronics
Which of the following is used in heat sink?

 Carbon.
 Silver.
 Iron.
  Aluminium.

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