If two resistances of 9 and 6 are connected in parallela the total resistance is



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  1. When the net reactance in a series coil-capacitor circuit is zero at frequency fa the nature of its…
  2. The temperature coefficient of resistance of electrolytes is
  3. For a series ACcircuita ___ is not used as a reference phasor.
  4. What dielectric is generally employed by a variable capacitor?
  5. The potential gradient in a cable is maximum in
  6. What is the peak factor of a triangular wave?
  7. What determines the direction of induced emf in a conductor or coil?
  8. The internal resistance of an ideal current source is
  9. According to Gauss theorema flux can be equated to
  10. What is the complex impedance of a circuit with an absolute resistance of 300 ?
  11. The current is ____ times the maximum current at half-power points of a resonance curve.
  12. A capacitor is used to
  13. A capacitor of 0.5 F charged to 220 V is connected across an uncharged 0.5 F capacitor. What is the…
  14. The ratio of W/VA in an ac circuit means
  15. Of the equivalent combination of unitsa which one is not equal to watt?
  16. The impedance in the study of electronics is represented by resistan
  17. Which one of the following elements serves as a protection against overload?
  18. In an inductive coila the rate of rise of current is maximum
  19. An open inductor has
  20. What is the resonant frequency of a circuit when L of 3 microhenrys and C of 40 picofarads are in series?
  21. Which of the following has negative temperature coefficient?
  22. When resistance are connected in parallela the total resistance is
  23. When two in-phase sine waves that have identical frequency and amplitude are added togethera then the…
  24. A law which states that when a constant electromotive force is applied to a circuit consisting of a…
  25. Which of the following dielectric materials makes the lowest-capacitance capacitor?
  26. What is the purpose of a load in an electric circuit?
  27. A rheostat is a form of
  28. If resonant frequency is 10 kHz and quality factor is 50a then
  29. The factor 0.707for converting peak to rms applies only to
  30. The internal resistance of an ideal voltage source is