Resonance In AC Circuit objective questions (mcq) and answers


41.  In order to tune a parallel resonant circuit to a lower frequency, the capacitance must


   A. Be increased

   B. Be decreased

   C. Be zero

   D. Remain the same


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A. Be increased

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42.  The dynamic resistance of a parallel resonant circuit is given by


   A. LC/RL

   B. LCRL

   C. C/LRL

   D. L/CRL


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D. L/CRL

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43.  A resonance curve for a series circuit is a plot of frequency versus


   A. Current

   B. Voltage

   C. Impedance

   D. Reactance


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A. Current

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44.  Selectivities of different resonance circuits are compared in terms of their


   A. Impedances

   B. Reactances

   C. Frequencies

   D. Bandwidths


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D. Bandwidths

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45.  A parallel AC circuit in resonance will


   A. Have current in each section equal to the line current

   B. Have a high voltage developed across each inductive and capacitive section

   C. Act like a resistor of low value

   D. Have a high impedance


✔ View Answer


D. Have a high impedance

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