What is admittance in parallel circuit?

Admittance ( Y ) : The admittance of a parallel circuit is the ratio of phasor current to phasor voltage with the angle of the admittance being the negative to that of impedance.

How is admittance calculated?

Admittance of an AC circuit is the reciprocal of its impedance. Using the impedance value one can easily derive the Admittance values of the circuit. where ‘Z’ is the impedance, Z = R+jX. So, admittance ‘Y’ can be written as, Y = 1/R+jX.

What are the properties of parallel resonance circuit?

A parallel resonant circuit stores the circuit energy in the magnetic field of the inductor and the electric field of the capacitor. This energy is constantly being transferred back and forth between the inductor and the capacitor which results in zero current and energy being drawn from the supply.

What is admittance method?

Admittance method is used for solving parallel AC circuits. The admittance shows the reliability of the electrical circuit to allow the electric current to pass through it.

What is admittance in circuit?

In electrical engineering, admittance is a measure of how easily a circuit or device will allow a current to flow. It is defined as the reciprocal of impedance, analogous to how conductance & resistance are defined.

Why in parallel resonance the current is minimum?

As the total susceptance is zero at the resonant frequency, the admittance is at its minimum and is equal to the conductance, G. Therefore at resonance the current flowing through the circuit must also be at its minimum as the inductive and capacitive branch currents are equal ( IL = IC ) and are 180o out of phase.

What is parallel resonant circuit state conditions for parallel resonance?

In practice, the impedance (Z) of the circuit is maximum and not infinite because of resistance of the coil and hence the r.m.s. current given to the circuit is minimum (tends to zero),this is the condition of parallel resonance. An ac current is given by, i=i0sinωt. i=ic−il.

Where is admittance used?

What is admittance function?

Admittance is defined as a measure of how easily a circuit or device will allow current to flow through it. Admittance is the reciprocal (inverse) of impedance, akin to how conductance and resistance are related. The SI unit of admittance is the siemens (symbol S). Therefore it has the opposite function of impedance.

When does resonance occur in parallel RLC circuit?

In parallel RLC circuit resonance occurs, when the imaginary term of admittance, Y is zero. i.e., the value of 1 X C − 1 X L should be equal to zero ⇒ 1 X C = 1 X L ⇒ X L = X C The above resonance condition is same as that of series RLC circuit.

What is the meaning of parallel resonance?

Parallel Resonance means when the circuit current is in phase with the applied voltage of an AC circuit containing an inductor and a capacitor connected together in parallel. Let us understand the Parallel Resonance with the help of a circuit diagram shown below:

What is the resonance condition in a circuit?

At the Resonance condition, the circuit draws the minimum current as under this (resonance) condition the reactive component of current is suppressed. The value of inductive reactance X L = 2πfL and capacitive reactance X C = 1/2πfC can be changed by changing the supply frequency.

What is the value of circuit impedance at parallel resonance?

The circuit impedance is purely resistive because there is no frequency term present in it. If the value of Inductance, Capacitance and Resistance is in Henry, Farads and Ohm than the value of circuit impedance Z r will be in Ohms. The value of Zr will be very high because the ratio L/C is very large at parallel resonance.