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Power Electronics

Power Electronics
Switching frequency of SITH is

 10 KHz.
 5 KHz.
  100 KHz.
 60 KHz.

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Power Electronics
A step up chopper has input voltage 110 V and output voltage 150 V. The value of duty cycle is

  0.67.
  0.45.
  0.27.
  0.32.

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Power Electronics
A diac has ___________ terminals.

Three
Two
Four
None of these

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Power Electronics
A triac can pass a portion of ___________ half-cycle through the load.

Both positive and negative
None of these
Only negative
Only positive

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Power Electronics
A Triac has three terminals viz ___________

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

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Power Electronics
The reverse recovery time of diode is trr = 3 μs and the rate off all of the diode current is di/dt = 30 A/μs. The storage charge current QRR is

  135 μs.
 140 μs.
 130 μs.
 145 μs.

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