Electrical Engineering ⇒ Topic : Introduction of Parallel A.C. Circuits
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Seema
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Introduction As in parallel d.c. circuits, the voltage is the same across each branch of a parallel a.c. circuit.But current in any branch depends upon the impedance of that branch. The total line current supplied to the circuit is the phasor sum of the branch currents. Parallel circuits are used more frequently in electrical systems than are the series circuits. For example, electrical devices and equipment are connected in parallel across a.c. mains. There are two principal reasons for it. First, the operation of each device becomes independent of the other. Therefore, it is possible to turn on or off any device without disturbing the operation of other devices. Secondly, most of the electrical appliances requiring different currents at the same voltage are to be connected to the same power source. This necessitates parallel connections. In this chapter, we shall discuss the various methods of solving parallel a.c. circuits | |
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