Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. Determine briefly subscriber loop system. Give some technical specification for subscriber lines.
Ans:
Subscriber Loop System:Each subscriber in a telephone network is connected generally to the nearest switching office by a dedicated pair of wires. Subscriber loop refers to this pair of wires. It is un-widely to run physically independent pairs from each subscriber premises tothe exchange. It is far easier to lay cables comprising a number of pairs of wires for different geographical locations and run individual pairs as needed by subscriber premises.
Commonly four levels of cabling are used as displayed in figure. At the subscriber end, drop wires are taken to a distribution point. Drop wires are the individual pairs which run into the subscriber premises. At distribution point, drop wires are connected to wire pairs in distribution cables. Many distribution cables from nearby geographical locations are terminated on a feeder point where they are linked to branch feeder cables which, in turn, are linked to main feeder cable. Main feeder cables carry a larger number of wire pairs, usually 100-2000, than distribution cables which carry normally10-500 pairs. Feeder cables are terminated on a main distribution frame (MDF) at the exchange. Subscriber cable pairs emanating from exchange are also terminated on the MDF.
Exchange pairs and subscriber pairs are interconnected at the MDF by jumpers. MDF thus provides a flexible interconnection mechanism which is very useful in reallocating cable pairs and subscriber numbers. Technical specifications for subscriber lines include:
1. Diameter of wire
2. D.C. resistance per Km
3. Attenuation per K
Composition of FET The FET (field-effect transistor) can be constructed from several semiconductors, silicon being by far the most common. Several FETs are made with conventio
explain the proprty and the application of carbon and tungsten in lamp?
Branch Operations Normally the program executes in a sequence. The contents of the program counter register are incremented by one during the execution of current instr
Q. Show the Methods of material handling? Methods of material handling during operations and maintenance activities shall be considered for all facilities to ensure that the fi
explain about led
Define Time and Shift Invariant? Time and shift invariant means that the system characteristics and shift do not change with time, i.e. the system output is independent of the
Microcontroller Microcontroller is also known as computer on a chip this includes basic features of microprocessor (ALU Registers and control circuits ) with 1 k to 2k
voice signal is measured at 3.21692v and resides in an interval from 3.20v to 3.30. How big is an interval? MAx possible voltage?
what is plane transmission grating/?
Q. For the circuit shown in Figure, develop and execute a PSpice program to obtain the node voltages and the current through each element.
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd