The voltage of domestic supply is 220V. This figure represents__________?

Related Mcqs:

1. The frequency of domestic power supply in Pakistan is_________?

   A. 200 Hz
   B. 100 Hz
   C. 60 Hz
   D. 50 Hz

2. The power consumed in a circuit element will be least when the phase difference between the current and voltage is__________?

   A. 180″
   B. 90°
   C. 60°
   D. 0°

3. The phase difference between voltage and current wave through a circuit element is given as 30°. The essential condition is that

   A. both waves must have same frequency
   B. both waves must have identical peak values
   C. both waves must have zero value at the same time
   D. none of the above

4. The power consumed in a circuit element will be least when the phase difference between the current and voltage is________?

   A. 180″
   B. 90°
   C. 60°
   D. 0°

5. A pure capacitor connected across an A.C. voltage consumed 50 W. This is due to________?

   A. the capacitive reactance in ohms
   B. the current flowing in capacitor
   C. the size of the capacitor being quite big
   D. the statement is incorrect

6. The product of apparent power and cosine of the phase angle between circuit voltage and current is

   A. true power
   B. reactive power
   C. volt-amperes
   D. instantaneous power

7. 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

8. In a parallel R-C circuit, the current always________the applied voltage?

   A. lags
   B. leads
   C. remains in phase with
   D. none of the above

9. Time constant of a circuit is the time in seconds taken after the application of voltage to each___________?

   A. 25% of maximum value
   B. 50% of maximum value
   C. 63% of maximum value
   D. 90% of the maximum value

10. Which of the following circuit component opposes the change in the circuit voltage ?

    A. Inductance
    B. Capacitance
    C. Conductance
    D. Resistance