Moderate
Which of the following materials is used for overhead transmission lines ?
Correct answer: D. Any of the above
- A. Steel cored aluminium
- B. Galvanised steel
- C. Cadmium copper
- D. Any of the above
Explanation
Steel-cored aluminium, galvanised steel and cadmium copper have all been used as overhead-line conductors for different strength and conductivity requirements. Therefore, the inclusive option is applicable.
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