Skin Effect of Transmission Lines | Power Transmission and Distribution MCQ#4

Skin effect of transmission lines:

  1. Decreases with the diameter of the wire
  2. Decreases with increase in frequency
  3. Is less for solid conductors
  4. None of these

Correct answer: 4. None of these

Explanation: Whenever the alternating current is flowing through a conductor, it has the tendency to concentrate at the surface. This effect is known as the skin effect. The skin effect depends on the following factors:

  • The diameter of wire: It is directly proportional and increases with increases in the diameter of the wire
  • Frequency: Increases with increase in frequency
  • Stranded conductors: Is less for stranded conductors and more for solid conductors

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