4 Nov Ch 32 (a Vol). 1. TRANSFORMER! ➣➣➣➣➣ Working Principle of Transformer ➣➣➣➣➣ Transformer Construction. 26 Nov Induction Motor (a Vol. – 2). 1. Electrical Technology Induction Motors Three phase and single phase; 2. Induction Motor: General. B.L. Theraja is the author of A Text Book of Electrical Technology ( avg rating , ratings, 89 reviews, published ), Basic Electronics ( a.

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The easiest method of locating fhareja point of minimum potential is to take the moments about the two ends and then by comparing the two sums bl thareja a gl at the possible point. Suppose the transmitting volt- age is V, current in AC is 10 amperes, and resistance of each feeder conductor is 0. Obviously, point Tharejaa is the point of mini- mum potential.

Power By transmission and distribution of thareua power is meant its conveyance from the central station where it is generated to places, where it is demanded by the consumers like mills, factories, residential and commercial buildings, pumping stations etc.

The concentrated loads of 50, 40, 30 bl thareja 25 A are coming on the distributor at distances of 50, 75, and m respectively from end A. A distributor AB is fed from both ends. I authorize the treatment of my personal data for promotional and advertising communications and activities realized by Docsity. Moreover, since they must operate at low speeds, it necessi- tates large and bl thareja machines.

The insulation resistance of the whole system should be very high so that there is no bl thareja leakage or danger to bl thareja life.

basic electronics book b l thareja

The junction of their armatures is earthed and the neutral wire is taken tharfja bl thareja there. Consider the case of a 2- wire feeder Fig.

As seen, bl thareja potential difference and current have their maximum values at feeding points F 1 and F 2. The way it is done bl thareja as follows:. Electrical Technology, Calcutta Univ. The points FFas shown in the figure, are known as feeding points.

Using the thaeeja two equations, we have Fig. Motors requiring higher voltage are connected across the outers whereas lighting and heating circuits bl thareja less voltage are connected between any one of the outers and the neutral. Such bl thareja are solved in two stages. Resistance of single wire is 0. Since F 2 is at a lower potential, these ampere-metres appear in the coloumn for F 2 as bl thareja drop.

A uniform 2-wire d. A 3-wire has not only a higher efficiency of transmission Fig. Tharja total drop over the whole cable is zero because it is fed at both ends by equal volt- ages.

The calculation of drop in a feeder is, as seen from above, quite bl thareja because of the fact that current is constant throughout its length. Let the current distribution be bl thareja shown. The drop can be calculated by locating point A and then values of x and y can be bl thareja. For calculating the total voltage drop along the entire length of a distribu- tor, following information is necessary.

System—Single- phase Low frequency A. Since points A and B are fed bl thareja equal voltages, total drop over the distributor is zero. In fact, let us, for the time being, imagine that it is just not there. The station bus-bars are fed by a number of generators only two shown in the figure running in bl thareja. The number of cross-arms carried by a pole depends on the number of wires tharja has to carry.

The currents in various sections are as shown.

Electrical Technology by B.L. Thareja (2nd hand)

The actual current distribution is bl thareja in Fig. In general, the drop at any intermediate point is equal to the sum of moments bl thareja various tapped currents upto that point plus the moment of all the load currents beyond that point assumed to be acting at that point.

Hence, drop at the middle point is.