Designing 100 line exchange using uni-selector, Electrical Engineering

Assignment Help:

Q. Designing 100 line exchange using Uni-selector?

Here three different designing methods for 100 line exchange are discussed:

Design: Strowger switching system is designed using one two-motion selector for each subscriber. A subscriber is assigned a number in the range 00-99 and same number is used to identify two-motion selector assigned to him. 100 outlets of each two-motion selector are numbered as per the scheme given in table. Corresponding outlets in all the 100 two-motion selectors are commoned and folded back to corresponding inlets. For illustration a subscriber with 87 as his number is assigned two-motion selector 87. Outlet 87 which corresponds to this subscriber is connected to 7th contact in the 8th vertical position of all two-motion selectors and folded back to his inlet. Arrangement is demonstrated in figure. If subscriber 23 dials 87, his two motion selector 23 would step vertically 8 times corresponding to first digit and would step horizontally 7 times to reach contact to which the subscriber 87 is connected. This switch is non- blocking and uses only one stage of switching elements. As two-motion selector is activated by calling party, call is terminated only when the calling party disconnects the line. If a two-motion selector goes out of order, subscriber connected to it won't be able to make any outgoing calls though can receive incoming calls. Design parameters of this switch are:

S =100, SC =50, K = 1, TC =1,

EUF = 0.5, C= 200, CCI =25, PB =0.

694_Designing 100 line exchange using Uni-selector.png


Related Discussions:- Designing 100 line exchange using uni-selector

Compute the rated-load efficiency, The following data apply to a 100-kW, 25...

The following data apply to a 100-kW, 250-V, six-pole, 1000-r/min long-shunt compound generator: no-load rotational losses 4000 W, armature resistance at 75°C = 0.015 , series-fie

Show the subtraction method, Q. Show the Subtraction Method? For this p...

Q. Show the Subtraction Method? For this procedure (method), start with a weighted position value greater that the number. If the number is greater than the weighted position f

Explain factors affecting permeability and hysterisis loss, Explain the fac...

Explain the factors affecting permeability and hysterisis loss. Factors affecting permeability and hysterisis loss: When the initial permeability is high, the hysterisis los

Find the diameter of a circular waveguide, Q Find the diameter of a circula...

Q Find the diameter of a circular waveguide that will have a lower cutoff frequency of 10 GHz and also specify its largest usable frequency.

Calculate generated emf, Q.  A shunt generator gives full load output of 3...

Q.  A shunt generator gives full load output of 30 kW at a terminal voltage of 200V. The armature and field resistance are 0.05? and 50? resp.. The iron and friction losses are 10

Illustrate the components of flexible manufacturing system, What is FMS? Il...

What is FMS? Illustrate the components of Flexible Manufacturing System? Discuss the different kinds of Material Handling and Storage Systems?

Input offset current of operational amplifier, Q. Input offset current of o...

Q. Input offset current of operational amplifier? The adverse effect of the input bias current mentioned would be nulli?ed if both inputs were connected to equal resistances (o

Spectrum analyzer, Problem statement: A specialized piece of laboratory te...

Problem statement: A specialized piece of laboratory test equipment, called a spectrum analyzer,will be placed on a mobile push cart. The spectrum analyzer measures the amplitude

What is work-sharing constructs, Q. What is Work-Sharing Constructs? A ...

Q. What is Work-Sharing Constructs? A work-sharing construct distributes execution of associated region amongst the members of team which encounters it. A work-sharing construc

Measure and set frequency by using an oscilloscope, 1. Introduction : ...

1. Introduction : Theory: Frequency is the number of occurrences of a repeating event per unit time. It can also be defined as the number of repetitions (cycles) of a w

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