Power Electronics
Which of the following is not a characteristic of UJT?

Negative resistance
Bilateral conduction
Peak-point voltage
Intrinsic stand off ratio

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Power Electronics
An SCR is considered to be a semi controlled device because

 it conducts only during one half cycle of an alternating current wave.
 it can be turned OFF but not ON with a gate pulse.
 it can be turned ON but not OFF with a gate pulse.
 it can be turned ON only during one half cycle of an AC.

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Power Electronics
SCR will be turned off when anode current is

  < latching current but greater than holding current and gate signal is 0.
  both (A) and (B).
 < latching current but greater than holding current and gate signal is present.
 less than holding current.

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