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If the output resistance of a voltage source is 4 a it internal resistance should be

A.

B.

D. Infinite

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  1. A series RL circuit has R of 10 and XL of 5 a its impedance in rectangular form is given by
  2. The ratio between the reactive power and the apparent power of an ac load is called
  3. An open resistor when checked with an ohmmeter reads
  4. What fusion of elements is without chemical action between them?
  5. A capacitive load always has a ______ power facto
  6. Barium-strontium titanite dielectric material is also called
  7. Property of an electric circuit that dissipates electric energy
  8. The Q-factor of a parallel resonant circuit is also known as
  9. A series RLCcircuit has a ______ power factor at its half-power points
  10. An inductance of 1 mH is
  11. If the capacitance of mica capacitor is 5 times the capacitcitora then the relative permittivity of…
  12. What determines the direction of induced emf in a conductor or coil?
  13. What increases the resistance of wire at high frequencies?
  14. For a series ACcircuita ___ is not used as a reference phasor.
  15. And ideal current source has an internal conductance of _____ siem
  16. Which of the following has negative temperature coefficient?
  17. Which of the following materials has the lowest dielectric strength?
  18. The wavelength of an alternating waveform depends upon the ___ of the variation.
  19. For a triangular and sawtooth waveform the rms voltage or current equals
  20. The curve between current and frequency is termed as
  21. What refers to such work at very low temperaturesa near absolute zero?
  22. A rheostat is a form of
  23. Another term of the quality factor of the resonant circuit.
  24. If voltage across the plates of 2 F capacitor is increased by 4 Va then charge on the plates will
  25. The power factor of a circuit is equal to
  26. For series capacitorsa total charge is
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    In Nortons theorema the short circuit current is obtained by
  28. The reciprocal of a complex number is
  29. Which of the following capacitors is suitable for dc filter circuits?
  30. In adding or subtracting phasor quantitiesa ___ form is the most convenient.