What is the value of surge impedance of a transmission line if the line inductance is 169 H and capacitance is 64 F?

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PGCIL DT Electrical 5 May 2023 Official Paper
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  1. 1.6 ohm
  2. 2.6 ohm
  3. 4.6 ohm
  4. 8.9 ohm

Answer (Detailed Solution Below)

Option 1 : 1.6 ohm
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Detailed Solution

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Concept:

Characteristic impedance 

Where L is per phase line inductance

C is per phase line capacitance

Power transfer capability under surge impedance loading is given by,

Calculation:

Given that,

Line inductance (L) = 169 H

Line capacitance (C) = 64 F

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