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Power Electronics

Power Electronics
Switching frequency of SITH is

  100 KHz.
 60 KHz.
 10 KHz.
 5 KHz.

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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?

 115 ohm
  111.9 ohm
 108 ohm
 11.19 ohm

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Power Electronics
IGBT combines the advantages of

 SITs and MOSFETs.
 None of these.
  BJTs and MOSFETs.
 BJTs and SITs.

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Power Electronics
For series connected SCR’s dynamic equalising circuit consists of

 series R and diode with C across R.
 R and C in series but with diode across C.
 series R and diode with C across R.
  R and C in series but with diode across R.

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Power Electronics
The typical time of rising time lies between

 90 - 100 µs.
 40 - 60 µs.
 10 - 20 µs.
  1 - 4 µs.

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Power Electronics
In a UJT, the p-type emitter is ___________ doped

Moderately
Lightly
Heavily
None of these

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