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Power Electronics

Power Electronics
Maximum power loss occurs during

  rise time.
 delay time.
 all.
 spread time.

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Power Electronics
For an SCR gate cathode characteristic is a straight line of 130. For triggered source volume of 15 V and allowable gate power dissipation of 0.5 W compute the gate source resistance?

  111.9 ohm
 108 ohm
 115 ohm
 11.19 ohm

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Power Electronics
Leakage current flows through the thyristor in

 forward conduction mode.
 reverse blocking mode.
  both forward and reverse blocking mode.
 forward blocking mode.

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Power Electronics
When the temperature increases, the intrinsic stand off ratio ___________.

Increases
Essentially remains the same
None of these
Decreases

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Power Electronics
A triac is a ___________ switch

Unidirectional
Bidirectional
Mechanical
None of these

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Power Electronics
A thyristor can termed as

 AC switch.
 Both a and B.
  DC switch.
 Square wave switch.

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