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The conductors of a three – phase 50 Hz, 125 km long transmission line are shown in the figure. The diameter of each conductor is 0.6 cm. What is the value of inductance per phase?
  • a)
    0.1725 H
  • b)
    1.825 H
  • c)
    0.8625 H
  • d)
    1.225 H
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The conductors of a three – phase 50 Hz, 125 km long transmissio...
Ds = 0.7788r = 0.7788 × 0.3 = 0.233 cm

= 1.38 × 10-6 H/m
= 1.38 × 10-3 H/km
The value of the inductance
L = 1.38 × 10-3 × 125 = 0.1725 H
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Most Upvoted Answer
The conductors of a three – phase 50 Hz, 125 km long transmissio...
Ds = 0.7788r = 0.7788 × 0.3 = 0.233 cm

= 1.38 × 10-6 H/m
= 1.38 × 10-3 H/km
The value of the inductance
L = 1.38 × 10-3 × 125 = 0.1725 H
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