1. If L1 and L2 are the capacitance used in Hartley oscillator the effective capacitance in the equation of frequency calculation is equal to (Without considering mutual index) a) (L1×L2)/(L1+L2) b) L22/(L1+L2) c) L1+L2 d) L1-L2 AnswerAnswer: c [Reason:] Inductance L1 and L2 are series and hence effective capacitance without mutual inductance will be L1+L2….