What are concentrators, Electrical Engineering

Assignment Help:

Q. What are concentrators? Elucidate how it helps in connecting number of subscribers.

Ans:

In rural areas, subscribers are usually dispersed. It is both expensive and unnecessary to provide a dedicated pair for each subscriber. 3 techniques are used to gain on the number pairs:

1. Parity lines

2. Concentrators

3. Carrier Systems.

In first technique, two or more subscribers are connected to one line that is called parity line. This scheme isn't used commonly since it has a number of drawbacks. Only one subscriber at a time can use this line. Selective ringing is difficult in addition privacy also isn't maintained. Dialing between two subscribers on same line isn't possible.


Related Discussions:- What are concentrators

Calculate the unknown thermal conductivity, Derive the mathematical 3-D hea...

Derive the mathematical 3-D heat conduction equation in Spherical Coordinates? A furnace is made up of three layers of thicknesses 250 mm, 150 mm nad 100 mm with thermal conduct

Rectifier, the forward resisitance of a semi conductor diode is 10 ohm, two...

the forward resisitance of a semi conductor diode is 10 ohm, two such diodes used in full wave rectifier subjectto a sinusoidal voltage wave form. given by v(t)=308 , sin(100 pi t)

Determine the maximum power, Determine the maximum power: 1 For the c...

Determine the maximum power: 1 For the circuit shown below, what value of RL will result in maximum power transfer? Determine the maximum power dissipated in RL. You

Illustrate flat plate collectors, What is the use of basic earth-sun angles...

What is the use of basic earth-sun angles? Show by mean of diagram. Illustrate sun as source of energy with relevant data? Illustrate flat plate collectors. Describe liquid f

Full wave rectifier with filter, what is the theory for full wave rectifier...

what is the theory for full wave rectifier with c filter

Control system, I need some help for doing the assignment

I need some help for doing the assignment

Analyze diode circuit with rlc load, Q. Analyze Diode circuit with RLC load...

Q. Analyze Diode circuit with RLC load? Consider a diode circuit with an RLC load, as shown in Figure, and analyze it for i(t) when the switch S is closed at t = 0. Treat the d

Semiconductor devices, Semiconductor Devices: We have studied semicond...

Semiconductor Devices: We have studied semiconductor devices. Firstly, we understand what semiconductors in terms of energy band diagrams are. Then we understand what is dopin

Flip flops, if JK flip flop has 1600hz frequency .then what is the input fr...

if JK flip flop has 1600hz frequency .then what is the input frequency?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd