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Generally characteristic impedance of cable is taken as _______
  • a)
    4000 Ω
  • b)
    40 Ω
  • c)
    400 Ω
  • d)
    4 Ω
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Generally characteristic impedance of cable is taken as _______a)4000&...
Concept:
The surge impedance or characteristic impedance of a long transmission line is given by,
Z is series impedance per unit length per phase
Y is shunt admittance per unit length per phase
The surge Impedance for the transmission line is about 400 ohms it is around 40 ohms for underground cables.
For overhead line surge impedance is given by 100 - 200  Ω
For underground cable surge impedance is given by 40 - 60 Ω
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Generally characteristic impedance of cable is taken as _______a)4000&...
B) 50
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Generally characteristic impedance of cable is taken as _______a)4000Ωb)40Ωc)400Ωd)4ΩCorrect answer is option 'B'. Can you explain this answer?
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