For analysing long transmission lines, identify from the list those that are considered shunt elements.

1. Line resistance

2. Line inductive reactance

3. Line leakage susceptance

4. Line leakage conductance

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MPPGCL JE Electrical 28 April 2023 Shift 1 Official Paper

Answer 1

Elements in Transmission Lines

In transmission line analysis, elements can be classified as either series or shunt components:

Series Elements:

Line Resistance (R): It represents the power loss due to conductor resistance.
Line Inductive Reactance (X): It represents the effect of the magnetic field around the conductor.

Since these components are present in series with the line, they are not considered shunt elements.

Shunt Elements:

Line Leakage Susceptance (B): It represents the capacitive effect of the transmission line due to the conductors acting as a capacitor.
Line Leakage Conductance (G): Represents the leakage current through the dielectric medium (insulator) between conductors.

These elements are considered shunt components because they are modeled as being connected between the transmission line and ground.