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Which of the following has negative temperature coefficient?

A. Carbon

B. Nickel

C. Brass

D. Constantan

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  1. The value of temperature coefficient ( ) is dependent upon
  2. Which of the following is not a factor affecting capacitance oor?
  3. In an ac wavea 30 degrees of phase is ___ of a cycle.
  4. An inductor carries 2 A dc. If its inductance is 100 Ha then what is its inductive reactance?
  5. A capacitance of 0.05 F equals
  6. Tungsten filament of bulbs has a hot resistance higher than its cold resistance due to its temperature…
  7. The internal resistance of an ideal current source is
  8. A capacitor requires 12 C of charge to raise its potential of 3 V. What is the capacitance of the capacitor?
  9. A trimmer is a variable capacitor in which capacitance is varied by changing the
  10. The ratio between the active power and the apparent power of a load in an ac circuit is called
  11. What theorem is usually used in the analysis of transistor circuit?
  12. Why are inductance and capacitance not relevant in a dc circuit?
  13. The usual load of a dc circuit is a/an
  14. What is the specific resistance of a pure germanium?
  15. A linear circuit is one whose parameters
  16. The rms value of a triangular or sawtooth waveform is ___ tim value.
  17. When voltage is applied across a ceramic dielectric the electrostatic field p roduced is 50 times greater…
  18. The arc across a switch when it open an RL circuit is a result of the
  19. In an ac circuita the power dissipated as heat depends on
  20. What refers to the lowest voltage across any insulator that can cause current flow?
  21. What is the form factor of a triangular wave?
  22. When two coils of identical reactance are in parallel without mutual inductancea the reactance of the…
  23. The reactance curve is a plot of frequency versus _____ for a series RLCcircuit
  24. Which of the following is the most popular waveform?
  25. When two complex conjugates are subtracteda the result is a
  26. For a series circuita the higher the quality factor
  27. An electric circuit contains
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    An impedance given by 90 -45 is a/an ___ impedance.
  29. Electric energy refers to
  30. The reciprocal of a complex number is