Q. The surge impedance of a transmission line is given by
Solution:
- The surge impedance of a transmission line is given by v(L/C) .
- Properties of surge impedance:
- It is independent of length of transmission line.
- It is purely resistive its unit is ohm.
- Surge impedance of a transmission line is 400 ohm.
- Surge impedance of a cable is 40 ohm.
- Thus Surge impedance of a transmission line > Surge impedance of a cable.
- Thus capacitancee of a transmission line < Capacitance of cable of a cable.
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