All About Electrical & Electronics
The effective value of an alternating current for alternating e.m.f. is given by that direct current or e.m.f. which when applied to given circuit for a given time, produces same expenditure of energy as when the alternating current or voltage applied to the same circuit for the same time. Figure (a) shows an alternating current … Read more
Figure. (a) shows the principle of a simple alternator producing alternating voltage. It has two pole generator with the flux passing between the north and the South poles. In the conductor coil when in position no. 1, the rate of change of flux and the EMF produced in it is zero. Assume that the coil … Read more
An alternating quantity is one which acts in alternate positive and negative directions, whose magnitude undergoes a definite series of changes in in definite intervals of time and in which the sequences is identical in negative and positive. Figure (a) shows alternating quantity which is sinusoidal in nature and is quite common with alternating current … Read more