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In a parallel resonance circuit formed of L and C, resonance is to be obtained with an oscillator giving an output frequency of ω rad/sec. To obtain resonance, and unity power factor (1) either one, L, C or ω can be varied (2) it is better to vary L rather than C or ω (3) it is better to vary C or ω rather than L (4) it is best to vary C |
Answer» <p><span style="font-family:Arial,Helvetica,sans-serif"><span style="color:#000000"><strong>The Correct option is (4) it is best to vary C</strong></span></span></p> | |