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

41.  In a purely inductive circuit

   A. Actual power is zero

   B. Reactive power is zero

   C. Apparent power is zero

   D. None of the above

42.  Time constant of an inductive circuit

   A. Increases with increase of inductance and decrease of resistance

   B. Increases with increase of inductance and the increase of resistance

   C. Increases with the decrease of inductance and decrease of resistance

   D. Increases with decrease of inductance and increase of resistance

43.  The inductance of a coil can be increased by

   A. Increasing core length

   B. Decreasing in the number of turns

   C. Decreasing the diameter of the former

   D. Choosing core material having high permeability

44.  In a purely inductive circuit if the supply frequency is reduced to 1/2, the current will

   A. Be reduced by half

   B. Be doubled

   C. Be four times as high

   D. Be reduced to 1/4

45.  A small capacitance is added to a highly inductive circuit

   A. The angle between voltage and current will increase

   B. The power factor will increase

   C. The power factor will decrease

   D. The power drawn will decrease

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