The power factor of a certain circuit in which the voltage lags behind the current is 80 %. To increase the power to 100 %a it is necessary to add ___ to the circuit.

A. Inductance

B. Capacitance

C. Resistance

D. Impedance

You can do it
  1. The graph between an alternating quantity and time is called
  2. VL= VCin a series RLCcircuit when
  3. At what frequency will the current in a series RLCcircuit reach its maximum value for an applied voltage…
  4. Which of the following is the most popular waveform?
  5. High resistance values are a consequence of the ___ of the film.
  6. Which of the following does not generally affect the value of a capacitor?
  7. An alloy composed of 84 % coppera 12 % manganese and 4 % nickel.
  8. What is the hot resistance of a 100 Wa 220 V incandescent lamp?
  9. Which of the following capacitors has the highest cost per F?
  10. A capacitive load always has a ______ power facto
  11. A term used to express the amount of electrical energy stored in electrostatic field.
  12. At what frequency will an inductor of 5mH have the same reactance as a capacitor of 0.1 F?
  13. The result of rust in electrical (wire) connection is
  14. When the net reactance in a series coil-capacitor circuit is zero at frequency fa the nature of its…
  15. An inductor carries 2 A dc. If its inductance is 100 Ha then what is its inductive reactance?
  16. If a coil has a Q of 10a it means that
  17. What is the total effective capacitance of two 0.25 F capacitors connected in series?
  18. The second strip of an electronic resistor color-code represents
  19. Which of the following capacitors are used only in dc circuits?
  20. When voltage is applied across a ceramic dielectric the electrostatic field p roduced is 50 times greater…
  21. What is the efficiency under the conditions of maximum power transfer?
  22. Which one of the following elements serves as a protection against overload?
  23. The presence of an electric current is made known by
  24. The charging of a capacitor through a resistance obeys
  25. Metal tin becomes superconductor at approximately
  26. The value of temperature coefficient ( ) is dependent upon
  27. The factor 0.707for converting peak to rms applies only to
  28. Two capacitors of capacitance 9 F and 18 F in series will have a total capacitance of
  29. Which of the following does not refer to electrical energy?
  30. The internal resistance of an ideal voltage source is