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.
|Published (Last):||8 June 2016|
|PDF File Size:||2.18 Mb|
|ePub File Size:||17.18 Mb|
|Price:||Free* [*Free Regsitration Required]|
The advantage of feeding a distributor at both ends, instead of at one end, is obvious.
basic electronics book b l thareja
Tthareja — Objective Tests. The other currents in the various sections of the distributor are as shown in the figure. Electrical Technology ; Utkal Univ. The numbers along the distributor indicate length in metres. The standard voltage thsreja the conductors is V. Sign in via social Sign up with Facebook.
Calculate the voltage at each load. The number of cross-arms carried by a pole depends on the number of wires it has bl thareja carry. Transmission and Bl thareja It tahreja be noted that location of point of minimum potential is not affected by the uniformly- spread bl thareja of 0. Distributor Fed at Both Ends with Unequal Voltages This case can be dealt bl thareja either by taking moments in amp-m about the two ends and then making a guess about the point of bl thareja potential or by assuming a current x fed at one end and then finding the actual current distribution.
Suppose the transmitting volt- age is V, current in AC is 10 amperes, and resistance of each feeder conductor is 0. The 2-wire system when used for transmission purposes, has much lower thareka and economy as compared to the 3-wire system as shown later.
electrical book bl thareja, Guides for Electronics. Bharath University
As bl thareja, the dividing point is the same as before. Sometimes when there is only one distributor in a locality, several sub-distributors SD branching off from the distributor are employed and service mains are now connected to them instead of distributor as shown in the figure. System—Three- phase Low frequency Bl thareja. The ends A and B are fed at V. Distributor resistance per metre length go and return is 0.
Electrical Technology by B.L. Thareja (2nd hand)
The concentrated loads of 50, 40, bl thareja and 25 A are coming on the distributor at distances of 50, 75, bl thareja m respectively from end A. The transmission tjareja should not be unduly excessive.
Since points A and F are at the same potential, the p.
System—Disadvantages of 25kV A. Nowadays, we use solid-state devices, called rectifiers, to convert standard AC to DC current. Calculate the voltage at the feeding point B, the current supplied by each feeder and the bl thareja.
Let us find out the point of minimum. Calculate the currents in the various sections of the distributor, the minimum voltage and the point at which b occurs. Motors requiring higher voltage are connected across the outers whereas lighting bl thareja heating circuits requiring less voltage are connected between any one of the outers and the neutral. We can thus imagine as if the distribu- tor were cut into two at the middle point, bl thareja us two uniformly-loaded distributors each fed at one end with equal voltages.
Current applied by feeder at point A is Access your Docsity account. Uniform Bl thareja with Distributor Fed at Both Ends Consider a distributor PQ of length l units of length, having resistance per unit length of bl thareja ohms and with loading per unit length of i amperes.
Let the current distribution be as shown in Fig. Hence, drop over length dx is.
In that case, the point of minimum potential is obviously the middle point. If you don’t receive any email, please check your Junk Bl thareja box. Power By transmission and distribution tahreja electric power is meant its conveyance from the central station where it is generated to places, where bl thareja is demanded by the consumers like mills, factories, residential and commercial buildings, pumping stations etc.
This can be done with the help of the following pair of equations: Let us find the drop at any intermediate point like E. Line supports consist of i pole structures and ii tower. These feeders deliver power at b, points to a distributor which runs along the various streets. The potential of the conduc- tor will gradually fall from F 1 bl thareja, reach a minimum value at one of the tapping, say, A and then rise again as the other feeding point F 2 is approached.
Technology ; Bombay Bl thareja. Consider a distributor PQ of length l units of length, having resistance per unit length of r ohms and with loading bl thareja unit bl thareja of i amperes.
Drop due to uniform load can be found by imagining that the distributor is cut into two at point D so that AD can be looked upon as a distributor fed at one end and loaded uniformly.
From the bus-bars, the power is carried by many feeders which radiate to various parts of a city or locality. Bl thareja the current distribution bl thareja as shown. The cable is uniformly loaded at 0. In over-head system, power is conveyed by bare conductors of copper or aluminium which are strung between bl thareja or steel poles erected at convenient distances along a route.