Moderate
The material generally used for armour of high voltage cables is_____________?
Correct answer: B. steel
- A. aluminium
- B. steel
- C. brass
- D. copper
Explanation
Steel is generally used for cable armour because its high mechanical strength protects the cable against impact, crushing and tension. Aluminium may be used in some designs, but steel is the standard answer for high-voltage armour.
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