The power factor of a circuit is equal to




D. R/Z

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  1. Which statement is true about a passive circuit?
  2. What is the reciprocal of capacitance?
  3. Which of the following is a disadvantage of a wire-wound resistor?
  4. The arc across a switch when it open an RL circuit is a result of the
  5. The average value of a triangular or sawtooth wave is _____ times its peak value.
  6. Loop currents should be assumed to flow in which direction
  7. When the power factor of a circuit is zeroa
  8. Series resonant circuit is sometimes known as
  9. Which of the following combination of length and cross-sectional area will give a certain volume of…
  10. Capacitance increase with
  11. The maximum power transfer theorem is used in
  12. A 0.09 microfarad capacitor is charged to 220 volts. How long in milliseconds will it discharged resistor…
  13. If two resistances of 9 and 6 are connected in parallela the total resistance is
  14. What is the hot resistance of a 100 Wa 220 V incandescent lamp?
  15. With double the number of turns by the same length and areaa the inductance is
  16. Which of the following is not a factor affecting dielectric strength?
  17. In a series RLCcircuit
  18. At what frequency will an inductor of 5mH have the same reactance as a capacitor of 0.1 F?
  19. A capacitive load always has a ______ power facto
  20. Which of the following capacitors has the highest cost per F?
  21. If one resistance in a series connection is opena then
  22. Voltage resonance means
  23. A neon glow lamp used as a night light ionizes at approximately
  24. When current and voltage arte in phase in an ac circuita the ___ is equal to zero.
  25. An electric circuit contains
  26. A law which states that when a constant electromotive force is applied to a circuit consisting of a…
  27. Points to be considered in choosing a capacitor
  28. If a capacitor is rated for 200V dca what is its effective ac working voltage?
  29. What determines the direction of induced emf in a conductor or coil?
  30. The symbol Q refers to