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An SCR is considered to be a semi controlled device because_______?
  • (A)  it can be turned OFF but not ON with a gate pulse.
  • (B)  it conducts only during one half cycle of an alternating current wave.
  • (C)  it can be turned ON but not OFF with a gate pulse.
  • (D)  it can be turned ON only during one half cycle of an AC.