Some Electrical Terminology Most Important
There are certain theorems, which when applied to the solutions of electric networks, wither
simplify the network itself or render their analytical solution very easy. These theorems can also be applied to an a.c. system, with the only difference that impedances replace the ohmic resistance of d.c. system. Different electric circuits (according to their properties) are defined below :
1) Circuit
A circuit is a closed conducting path through which an electric current either flows
or is intended flow.
2) Parameters The various elements of an electric circuit are called its parameters like resistance, inductance and capacitance. These parameters may be lumped or distributed.
3) Linear Circuits
A linear circuit is one whose parameters are constant i.e. they do not change
with voltage or current.
4) Non Linear Circuits it is that circuit whose parameters change with voltage or current.
5) Bilateral CircuitsA bilateral circuit is one whose properties or characteristics are the same
in either direction. The usual transmission line is bilateral, because it can be made to perform its function equally well in either direction.
6) Unilateral Circuits It is that circuit whose properties or characteristics change with the
direction of its operation. A diode rectifier is a unilateral circuit, because it cannot perform
rectification in both directions.
7) Electric Network
A combination of various electric elements, connected in any manner
whatsoever, is called an electric network.
8) Passive Network
Passive Network is one which contains no source of e.m.f. in it.
9) Active Network
Active Network is one which contains one or more than one source of e.m.f.
10) Node
Node is a junction in a circuit where two or more circuit elements are connected together.
11) Branch
Branch is that part of a network which lies between two junctions.
12) Loop
It is a close path in a circuit in which no element or node
is encountered more than once.
13)Mesh
It is a loop that contains
no other loop within it.
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