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When two coils of identical reactance are in parallel without mutual inductancea the reactance of the combination is ___ the reactance of each coil.

A. One half

B. Twice

C. Four times

D. One fourth

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  1. If one resistance in a series connection is opena then
  2. Which of the following does not generally affect the value of a capacitor?
  3. What capacitance exists not through design but simply because two conducting surfaces are relatively…
  4. Barium-strontium titanite dielectric material is also called
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    A lead conductor has a resistance of 25 at 0 C. Determine its resistance at -30 C
  6. What is the hot resistance of a 100 Wa 220 V incandescent lamp?
  7. Which of the following capacitors is suitable for dc filter circuits?
  8. The Q-factor of a series resonant circuit is also known as
  9. If a capacitor is rated for 200V dca what is its effective ac working voltage?
  10. For a series circuita the higher the quality factor
  11. The second strip of an electronic resistor color-code represents
  12. Which of the following is a disadvantage of a wire-wound resistor?
  13. A capacitor consists of two
  14. The ratio of maximum value to the effective value of an alternating quantity is called
  15. For a triangular and sawtooth waveform the rms voltage or current equals
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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
  17. What is the specific resistance of a pure germanium?
  18. An inductor carries 2 A dc. If its inductance is 100 Ha then what is its inductive reactance?
  19. When frequency of an ac wave decreasesa the value of XLin a coil
  20. A series RL circuit has R of 10 and XL of 5 a its impedance in rectangular form is given by
  21. What is the efficiency under the conditions of maximum power transfer?
  22. Which of the following is the peakiest?
  23. Under the conditions of maximum power transfera a voltage source is delivering a power of 15 W to the…
  24. An intermittent and non-symmetrical alternating current like that obtained from the secondary winding…
  25. In an ac circuita the power dissipated as heat depends on
  26. If the output resistance of a voltage source is 4 a it internal resistance should be
  27. A wire of one kilometre length has a resistance of 20 . If the length is halveda then the new resistance…
  28. An electric circuit contains
  29. What is the form factor of a triangular wave?
  30. Which of the following is neither a basic physical law nor deliverable from one?