A gang capacitor is a variable capacitor in which capacitance is varied by changing the

A. Dielectric

B. Number of plates

C. Plate area

D. Distance between plates

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  1. An open inductor has
  2. Which of the following elements is active?
  3. And ideal current source has an internal conductance of _____ siem
  4. A trigger circuit consisting of a capacitor of 0.01 F is connected in series with a resistor. If the…
  5. When current and voltage arte in phase in an ac circuita the ___ is equal to zero.
  6. Which of the following does not generally affect the value of a capacitor?
  7. In a complex resistance-reactance planea XLis represented
  8. Which of the following is a way of decreasing mutual inductance?
  9. If three 100-pF capacitors are connected in seriesa then the total capacitance is
  10. The electric field strength between capacitor plates has a unit
  11. If a coil has a Q of 10a it means that
  12. When voltage is applied across a ceramic dielectric the electrostatic field p roduced is 50 times greater…
  13. A real current source has
  14. Loop currents should be assumed to flow in which direction
  15. VL= VCin a series RLCcircuit when
  16. What is the complex impedance of a circuit with an absolute resistance of 300 ?
  17. The factor 0.707for converting peak to rms applies only to
  18. In a multiple capacitora the plate area is
  19. A capacitance of 0.05 F equals
  20. What is a rotating vector whose projection can represent either current or voltage in an ac circuit?
  21. The reason why alternating current can induce voltage is
  22. The ratio between the reactive power and the apparent power of an ac load is called
  23. For a carbon composition resistora typical resistance values range from
  24. The ratio of maximum value to the effective value of an alternating quantity is called
  25. The average value of a triangular or sawtooth wave is _____ times its peak value.
  26. In adding or subtracting phasor quantitiesa ___ form is the most convenient.
  27. If a multiplate capacitor has 10 platesa each of area 10 cm2a then
  28. The second strip of an electronic resistor color-code represents
  29. An ac series circuit is composed of a resistance of 20 a inductive reactance of 40 a and a capacitive…
  30. Which of the following conditions is not true for a series RLCcircuit at resonance?