Moderate
In transmission lines the cross-arms are made of________________?
Correct answer: D. steel
- A. copper
- B. wood
- C. R.C.C.
- D. steel
Explanation
Transmission-line cross-arms are generally made of steel because it provides the required mechanical strength and durability for supporting conductors and insulators. Wood and RCC are used in some distribution arrangements but are not the usual transmission-line choice.
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