# A long overhead lossless power transmission line is terminated with its characteristic impedance. While the line is in operation

A long overhead lossless power transmission line is terminated with its characteristic impedance. While the line is in operation

### Right Answer is: There is no reflected wave on the line

#### SOLUTION

The two important electrical properties of a symmetrical network are:

1. Characteristic impedance (Zo)
2. Propagation constant.

Characteristic Impedance (Zo)

1. Characteristic impedance is a fine and useful concept of the transmission line.
2. When no part of the power sent down an infinite line returns no reflection, there is no loss of power.
3. When a line that is terminated at its characteristic impedance, behaves as an infinite line, it will also have no reflection.
4. A long overhead lossless power transmission line is terminated with its characteristic impedance. It indicates that the reflection coefficient is zero.

The reflection coefficient is,

${\rm{\Gamma }} = \frac{{{Z_0} – {Z_L}}}{{{Z_0} + {Z_L}}}$

Where

ZL is the line impedance