Category: RESONANCE

Locus Diagram of Parallel RLC Circuit

Locus Diagram of Parallel RLC Circuit: (a) Variable XL – Locus plots are drawn for parallel branches containing RLC elements in a similar way as for series circuits. Here we have more than one current locus. Consider the Locus Diagram of Parallel RLC Circuit shown in Fig. 8.25(a). The quantities that may be varied are […]

Locus Diagram of RL Series Circuit

Locus Diagram of RL Series Circuit: To discuss the basis of representing a Locus Diagram of RL Series Circuit by means of a circle diagram consider the circuit shown in Fig. 8.19(a). The analytical procedure is greatly simplified by assuming that inductance elements have no resistance and that capacitors have no leakage current. The circuit […]

Current Magnification in Parallel Resonance

Current Magnification in Parallel Resonance: Current Magnification in Parallel Resonance occurs when the voltage applied to the parallel circuit, V=IR Since For the Capacitor, Therefore, the quality factor Qr = IL/I or IC/I Reactance curves in Parallel Resonance: The effect of variation of frequency on the reactance of the parallel circuit is shown in Fig. 8.18. […]

Quality Factor of Parallel RLC Circuit

Quality Factor of Parallel RLC Circuit: Consider the Quality Factor of Parallel RLC Circuit shown in Fig. 8.16. In the circuit shown, the condition for resonance occurs when the susceptance part is zero. Admittance The frequency at which resonance occurs is The voltage and current variation with frequency is shown in Fig. 8.17. At resonant […]

Parallel RLC Circuit Resonance

Parallel RLC Circuit Resonance: Parallel RLC Circuit Resonance – Basically, parallel resonance occurs when XC = XL. The frequency at which resonance occurs is called the resonant frequency. When XC = XL, the two branch currents are equal in magnitude and 180° out of phase with each other. Therefore, the two currents cancel each other out, […]

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