What dielectric is generally employed by a variable capacitor?

A. Mica

B. Air

C. Electrolyte

D. Ceramic

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  1. What is the reciprocal of quality factor?
  2. What is the specific resistance of a pure silicon?
  3. Which of the following conditions is not true for a series RLCcircuit at resonance?
  4. What maximum voltage can be applied across the capacitor of time?
  5. What capacitance exists not through design but simply because two conducting surfaces are relatively…
  6. What determines the direction of induced emf in a conductor or coil?
  7. The ___ of an alternating quantity is defined as the fractional part of a period or cycle through which…
  8. What is the most convenient way of achieving large capacitance?
  9. The reason why electrical appliances are not connected in series.
  10. The graph between an alternating quantity and time is called
  11. In adding or subtracting phasor quantitiesa ___ form is the most convenient.
  12. What dielectric is generally employed by a variable capacitor?
  13. In an ac wavea 30 degrees of phase is ___ of a cycle.
  14. For a parallel ACcircuita ___ is used as a reference phasor.
  15. Nortons theorem is what form of an ac equivalent circuit?
  16. The current is ____ times the maximum current at half-power points of a resonance curve.
  17. Which statement is true?
  18. For a linear circuita ___ voltage or current is used to calculate average power.
  19. A lead conductor has a resistance of 25 at 0 C. Determine its resistance at -30 C
  20. What determines the magnitude of electric current?
  21. A series-parallel combination of identical resistors will
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  23. What is the value of a carbon composition resistor with the following color code: Browna whitea orangea…
  24. Transient period is considered over after
  25. A law which states that when a constant electromotive force is applied to a circuit consisting of a…
  26. When the movable plates of a gang capacitor completely overlap the fixed platesa the capacitance of…
  27. Points to be considered in choosing a capacitor
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  29. The ratio of W/VA in an ac circuit means
  30. The ratio of the flux density to the electric field intensity in the dielectric is called