In aluminium conductors, steel core is provided to____________?
Correct answer: D. increase the tensile strength
- A. compensate for skin effect
- B. neutralise proximity effect
- C. reduce line inductance
- D. increase the tensile strength
Explanation
Aluminium has good conductivity but relatively low mechanical strength, so a steel core is added in ACSR conductors to carry tensile loads and limit sag.
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