A. Steel
B. Wood
C. R.C.C
D. Either Steel or Wood
Answer: D. Either Steel or Wood
Explanation:
Cross arms are either made up of wood or steel angle sections.
Cross arms are installed at the top of the pole for holding the insulator on which the conductors are fastened.
If the cross arms are fixed in the center of the pole then it is simply called cross arms.
If the cross arms are fixed on the side of the pole then it is termed as side cross arms.
For the three-phase line, U-shaped Cross arms are used.