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What increases the resistance of wire at high frequencies?

A. Temperature

B. Voltage

C. Skin effect

D. Insulation

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  1. A series RLCcircuit has a ______ power factor at its half-power points
  2. What does a capacitor store?
  3. At what frequency will the current in a series RLCcircuit reach its maximum value for an applied voltage…
  4. Which one of the following elements serves as a protection against overload?
  5. What is the total effective capacitance of two 0.25 F capacitors connected in series?
  6. And ideal current source has an internal conductance of _____ siem
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    An impedance given by 90 -45 is a/an ___ impedance.
  8. If voltage across the plates of 2 F capacitor is increased by 4 Va then charge on the plates will
  9. For greater accuracya the value of phase angle should be determined from
  10. The value of temperature coefficient ( ) is dependent upon
  11. An intermittent and non-symmetrical alternating current like that obtained from the secondary winding…
  12. Which of the following is not a factor affecting dielectric strength?
  13. When capacitors are connected in seriesa the total capacitance is
  14. A wire of one kilometre length has a resistance of 20 . If the length is halveda then the new resistance…
  15. A 5 F capacitor charge to 5V has a stored charge equal to
  16. If the inductance is decreaseda the impedance of the circuit containing a resistor a capacitor and an…
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    Nortons theorem is what form of an ac equivalent circuit?
  18. What is a rotating vector whose projection can represent either current or voltage in an ac circuit?
  19. What rating of a resistor determines its ability to absorb heat?
  20. In an ac circuit with XL and R in seriesa the
  21. With double the number of turns by the same length and areaa the inductance is
  22. The admittance of a parallel RLC circuit is found to be the ___ sum of conductance and susceptances.
  23. If resonant frequency is 10 kHz and quality factor is 50a then
  24. In a rectangular wavea the form factor is
  25. Which of the following is the peakiest?
  26. In a complex resistance-reactance planea XLis represented
  27. If two complex conjugates are addeda ___ components results.
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    A lead conductor has a resistance of 25 at 0 C. Determine its resistance at -30 C
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    A capacitance of 6 F means
  30. Which of the following is a preferred resistor value?