The power factor of a circuit is equal to




D. R/Z

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  1. A trigger circuit consisting of a capacitor of 0.01 F is connected in series with a resistor. If the…
  2. In an RL series circuita
  3. Leakage resistance in a capacitor results into
  4. If the capacitance of mica capacitor is 5 times the capacitcitora then the relative permittivity of…
  5. Which of the following is a preferred resistor value?
  6. Which factor does not affect resistance?
  7. What rating of a resistor determines its ability to absorb heat?
  8. For a linear circuita ___ voltage or current is used to calculate average power.
  9. A capacitor is used to
  10. When two in-phase sine waves that have identical frequency and amplitude are added togethera then the…
  11. Which of the following is the most popular waveform?
  12. The ratio between the active power and the apparent power of a load in an ac circuit is called
  13. A coil of inductance L has an inductive reactance of XLin an ac circuit in which the effective current…
  14. The admittance of a parallel RLC circuit is found to be the ___ sum of conductance and susceptances.
  15. What is the temperature coefficient of the resistance Eureka?
  16. If voltage across the plates of 2 F capacitor is increased by 4 Va then charge on the plates will
  17. Refers to the outward-curving distortion of the lines of force near the edges of two parallel metal…
  18. For maximum power transfera what is the relation between load resistance RL and internal resistance…
  19. Permeability is otherwise known as
  20. What capacitance exists not through design but simply because two conducting surfaces are relatively…
  21. When frequency of an ac wave decreasesa the value of XLin a coil
  22. The power factor of a certain circuit in which the voltage lags behind the current is 80 %. To increase…
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    If a certain circuit has a current that is lagging the voltage by 45a then it displays
  24. A capacitor is basically constructed of
  25. An inductive load always has a ___ power factor
  26. The value of temperature coefficient ( ) is dependent upon
  27. What is the cross-sectional are of a conductor whose diameter is 0.001 inch?
  28. If a multiplate capacitor has 10 platesa each of area 10 cm2a then
  29. What is the half-power bandwidth of a parallel resonant circuit which has a resonant frequency of 3.6…
  30. What is expected when two 20 k a 1 watt resistor in parallel are use instead of one 10 k a 1 watt?