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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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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44. Selectivities of different resonance circuits are compared in terms of their
A. Impedances
B. Reactances
C. Frequencies
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
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