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Power Electronics

Power Electronics
A triac is equivalent to two SCRs ___________.

None of these
In series
In parallel
In inverse-parallel

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Power Electronics
A Triac has three terminals viz ___________

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

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Power Electronics
Anode current in an SCR consists of

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

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Power Electronics
ON state voltage drop across SCR lie between the range

  1 - 1.5 V.
 0 - 0.5 V.
 1.5 - 2 V.
 0.5 - 1 V.

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Power Electronics
Materials used in heat sink should have

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

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Power Electronics
The V-I characteristics for a triac in the first and third quadrants are essentially identical to those of ___________ in its first quadrant

UJT
Transistor
None of these
SCR

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