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What is a rotating vector whose projection can represent either current or voltage in an ac circuit?

A. Polar diagram

B. Scalar quantity

C. Velocity

D. Phasor

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  1. What is the complex impedance of a circuit with an absolute resistance of 300 ?
  2. For a triangular and sawtooth waveform the rms voltage or current equals
  3. In an ac circuit with XL and R in seriesa the
  4. The charge in the capacitor is stored at the
  5. A capacitor opposes change in
  6. The voltage cannot be exactly in phase with the current in a circuit that contains
  7. What is the rms value of a square wave?
  8. In an ac circuita the power dissipated as heat depends on
  9. If a capacitor is rated for 200V dca what is its effective ac working voltage?
  10. What increases the resistance of wire at high frequencies?
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    A capacitance of 6 F means
  12. Resistor with colored bands in the body
  13. The capacitance of a capacitor is ___ relative permittivity.
  14. The ohmic value of a resistor with negative temperature coefficient
  15. A real current source has
  16. An ac series circuit is composed of a resistance of 20 a inductive reactance of 40 a and a capacitive…
  17. At what frequency will an inductor of 5mH have the same reactance as a capacitor of 0.1 F?
  18. Which of the following has a positive temperature coefficient?
  19. If the output resistance of a voltage source is 4 a it internal resistance should be
  20. Which of the following combination of length and cross-sectional area will give a certain volume of…
  21. Series resonant circuit is sometimes known as
  22. What is the peak factor for alternating current or voltage varying sinusiodally?
  23. The superposition theorem is used when the circuit contains
  24. When the power factor of a circuit is zeroa
  25. The reciprocal of a complex number is
  26. When voltage is applied across a ceramic dielectric the electrostatic field p roduced is 50 times greater…
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    When two pure sine waves of the same frequency and the same amplitude which are exactly 180 outof-phase are added togethera the result is
  28. The wavelength of an alternating waveform depends upon the ___ of the variation.
  29. Which of the following represents the energy stored in a cap
  30. Which of the following is also known as antiresonant circuit?