AC Circuit objective questions (mcq) and answers


21.  Unit of reactive power is


   A. VA

   B. Watt

   C. VAR

   D. Ohm


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C. VAR

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22.  Skin effect occurs when a conductor carries current at.......... frequencies


   A. Very low

   B. Low

   C. High

   D. None of the above


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C. High

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23.  With the increase in applied frequency, the dielectric loss in a material will


   A. Increase

   B. Decrease

   C. Remain constant

   D. Become zero


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A. Increase

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24.  Real part of admittance is.......... and the imaginary part is........


   A. Impedance, resistance

   B. Resistance, impedance

   C. Susceptance, inductance

   D. Conductance, Susceptance


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D. Conductance, Susceptance

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25.  Capacitive Susceptance is a measure of


   A. A purely capacitive circuit's ability to pass current

   B. A purely capacitive circuit's ability to resist the flow of current

   C. The extent of neutralisation of reactive power in a circuit

   D. Reactive power in a circuit


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A. A purely capacitive circuit's ability to pass current

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