AC Circuit - Inductive Circuit objective questions (mcq) and answers

36.  The only inductive circuit takes power from the AC mains when

   A. Both applied voltage and current increase

   B. Both applied voltage and current decrease

   C. Applied voltage decreases but current increases

   D. Applied voltage decreases but current decreases

37.  A small capacitance is added to a highly inductive circuit,

   A. The angle voltage and current will increase

   B. The power factor will increase

   C. The power factor will decrease

   D. The power drawn will decrease

38.  Power factor of an inductive circuit is usually improved by adding a capacitor to it in

   A. Series

   B. Parallel

   C. Either series or parallel

   D. None of the above

39.  Pure inductive circuit

   A. Consumes some power on average

   B. Does not take power at all from a line

   C. Takes power from the line during some part of the cycle and then returns back to it during other part of the cycle

   D. None of the above

40.  In a pure inductive circuit

   A. The current is in phase with the voltage

   B. The current legs behind the voltage by 90^o

   C. The current leads the voltage by 90^o

   D. The current can lead or a leg by 90^o

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