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What is the efficiency under the conditions of maximum power transfer?

A.

B.

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    An impedance given by 90 -45 is a/an ___ impedance.
  2. The resistance of an insulator ___ when its temperature is increased.
  3. Which of the following has negative temperature coefficient?
  4. When capacitors are connected in seriesa the total capacitance is
  5. Another term for superconductor.
  6. If a capacitor is rated for 200V dca what is its effective ac working voltage?
  7. What is the total capacitance of 10 capacitorsa each of 20 F in series?
  8. A three-by-threea series-parallel matrix of resistorsa all having the same ohmic valuea would have a…
  9. A gang capacitor is a variable capacitor in which capacitance is varied by changing the
  10. Which of the following has a positive temperature coefficient?
  11. Effects of capacitance
  12. An intermittent and non-symmetrical alternating current like that obtained from the secondary winding…
  13. An alloy composed of 84 % coppera 12 % manganese and 4 % nickel.
  14. Which of the following capacitors are used only in dc circuits?
  15. A factor that states how much the resistance changes for a change in temperature?
  16. An inductor carries 2 A dc. If its inductance is 100 Ha then what is its inductive reactance?
  17. What can be used to estimate resonant frequency and to find reactance at any frequency for any value…
  18. Series resonance occurs when
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    Nortons theorem is ____ Thevenins theorem.
  20. Which of the following capacitors is suitable for dc filter circuits?
  21. The mutual inductance between two coils is ___ the reluctance of magnetic path.
  22. Which of the following does not affect resistance?
  23. A wire of one kilometre length has a resistance of 20 . If the length is halveda then the new resistance…
  24. Voltage resonance means
  25. The usual load of a dc circuit is a/an
  26. A law which states that when a constant electromotive force is applied to a circuit consisting of a…
  27. For a triangular and sawtooth waveform the rms voltage or current equals
  28. When the net reactance in a series coil-capacitor circuit is zero at frequency fa the nature of its…
  29. The reciprocal of a complex number is
  30. Transient period is considered over after