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Power Electronics

Power Electronics
The triac is ___________.

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

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Power Electronics
A diac is simply ___________.

A single junction device
None of these
A triac without gate terminal
A three junction device

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Power Electronics
A diac has ___________ terminals.

Three
Two
None of these
Four

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Power Electronics
Why resistor is used in Snubber circuit ?

  To minimize the discharging current.
 All of these.
 To minimize the charging current.
 To minimize the loss .

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Power Electronics
A thyristor will be triggered when Vg = 1.5 volt and Ig = 100 mA in the given figure. Calculate the value of R in ohm is

 60.
 3.714.
  37.14.
 65.

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Power Electronics
During reverse recovery time

  both B and C.
 charge carrier of junction J1 is swept out.
 charge carrier of junction J2 recombined.
 charge carrier of junction J3 is swept out.

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