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Power Electronics

Power Electronics
The triac is ___________.

A four-terminal device
Like a bidirectional SCR
Not a thyristor
None of these

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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?

 3.2 µs
 3.1 µs
  3.3 µs
 3 µs.

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Power Electronics
Maximum power loss occurs during

 spread time.
 delay time.
  rise time.
 all.

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Power Electronics
Anode current in an SCR consists of

  either electron or holes.
  Both electron and holes.
  holes only.
  electrons only.

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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?

 108 ohm
 11.19 ohm
  111.9 ohm
 115 ohm

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Power Electronics
A Triac has three terminals viz ___________

Two main terminal and a gate terminal
Cathode, anode, gate
None of these
Drain, source, gate

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