Skin effect of transmission lines:
- Decreases with the diameter of the wire
- Decreases with increase in frequency
- Is less for solid conductors
- 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