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The power factor of a certain circuit in which the voltage lags behind the current is 80 %. To increase the power to 100 %a it is necessary to add ___ to the circuit.

A. Inductance

B. Capacitance

C. Resistance

D. Impedance

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  1. The graph between an alternating quantity and time is called
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  3. At what frequency will the current in a series RLCcircuit reach its maximum value for an applied voltage…
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  13. The result of rust in electrical (wire) connection is
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  15. An inductor carries 2 A dc. If its inductance is 100 Ha then what is its inductive reactance?
  16. If a coil has a Q of 10a it means that
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  18. The second strip of an electronic resistor color-code represents
  19. Which of the following capacitors are used only in dc circuits?
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  21. What is the efficiency under the conditions of maximum power transfer?
  22. Which one of the following elements serves as a protection against overload?
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  25. Metal tin becomes superconductor at approximately
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  28. Two capacitors of capacitance 9 F and 18 F in series will have a total capacitance of
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