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

46.  Time constant of a capacitive circuit increases with

   A. Increase of capacitance and decrease of resistance

   B. Increase of capacitance and increase of resistance

   C. Decrease of capacitance and decrease of resistance

   D. Degrees of capacitance and increase of the resistance

47.  In a highly capacitive circuit

   A. Apparent power is equal to the actual power

   B. Reactive power is more than the apparent power

   C. Reactive power is more than the actual power

   D. Actual power is more than its reactive power

48.  In a pure capacitive 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 at high

   D. Be reduced to one fourth

49.  Capacitive reactance is more when

   A. Capacitance is less and frequency of supply is less

   B. Capacitance is less and frequency of supply is more

   C. Capacitance is more and frequency of supply is less

   D. Capacitance is more and the frequency of supply is more

50.  A pure capacitance is connected across 50 HZ, 230 V supply consumes 0.04 W. This consumption is attributed to

   A. Ohmic loss due to ohmic resistance of plates

   B. Loss of energy in dielectric

   C. Capacitive reactance in ohms

   D. Both A and B

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