Question

Why the telephone and electrical cables are strung out a little loose between the poles?

• A. To transfer high voltage current.
• B. To prevent contraction and snapping of the wire during winter.
• C. To avoid confusion in connecting the wires
• D. To avoid congestion over poles

Answer 1

Answer: (B)

To prevent contraction and snapping of the wire during winter.

When a solid gets heat it expands and on cooling it contracts. Due to this electrical and telephone cables are strung out a little loose so that in winter, as cables contract due to cooling of atmosphere and snapping may occur, can be avoided.