Electrical Engineering ⇒ Topic : Methods of Solving Parallel A.C. Circuits

Methods of Solving Parallel A.C. Circuits

While analysing a parallel a.c. circuit, two important points must be kept in mind First, a parallel circuit, in fact, consists of two or more series circuits connected in parallel. Therefore, each branch of the circuit can be analysed separately as a series circuit and then the effect of the separate branches can be combined. Secondly, alternating voltages and currents are phasor quantities. This implies that both magnitudes and phase angles must be taken into account while carrying out circuit calculations. There are four principal methods of solving parallel a.c. circuits, namely

(1) By phasor diagram

(2) By phasor algebra

(3) Equivalent impedance method

(4) Admittance method

The use of a particular method will depend upon the conditions of the problem. However, in general, that method should be used which yields quick results