In a pure capacitive circuit if the supply frequency is reduced to 1/2, the current will__________?

Related Mcqs:

1. In a pure 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 one fourth

2. In a highly capacitive circuit the__________?

   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

3. A parallel AC. circuit in resonance will__________?

   A. have a high voltage developed across each inductive and capacitive section
   B. have a high impedance
   C. act like a resistor of low value
   D. have current in each section equal to the line current

4. The reactance offered by a capacitor to alternating current of frequency 50 Hz is 20 Q. If frequency is increased to 100 Hz, reactance becomes_______ohms?

   A. 2.5
   B. 5
   C. 10
   D. 15

5. An A.C. voltage is impressed across a pure resistance of 3.5 ohms in parallel with a pure inductance of impedance of 3.5 ohms?

   A. the current through the resistance is more
   B. the current through the resistance is less
   C. both resistance and inductance carry equal currents
   D. none of the above

6. 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 frequency of supply is more

7. Capacitive susceptance is a measure of__________?

   A. reactive power in a circuit
   B. the extent of neutralisation of reactive power in a circuit
   C. a purely capacitive circuit’s ability to pass current
   D. a purely capacitive circuit’s ability to resist the flow of current

8. Time constant of a capacitive circuit__________?

   A. increases with the decrease of capacitance and decrease of resistance
   B. increases with the decrease of capacitance and increase of resistance
   C. increases with the increase of capacitance and decrease of resistance
   D. increase with increase of capacitance and increase of resistance

9. Pure inductive circuit takes power from the A.C. line when_________?

   A. applied voltage decreases but current increases
   B. applied voltage increases but current decreases
   C. both applied voltage and current increase
   D. both applied voltage and current decrease

10. A sine wave has a frequency of 50 Hz. Its angular frequency is ________ radian/second.

    A. 100 n
    B. 50 jt
    C. 25 JT
    D. 5 n