Underground cables are laid at sufficient depth___________?
Correct answer: C. to minimize the effect of shocks and vibrations due to gassing vehicles, etc
- A. to minimise temperature stresses
- B. to avoid being unearthed easily due to removal of soil
- C. to minimize the effect of shocks and vibrations due to gassing vehicles, etc
- D. for all of the above reasons
Explanation
The principal reason for laying cables at sufficient depth is to protect them from shocks, vibrations and mechanical damage caused by road traffic and other surface activity. Hence, option c is the standard answer.
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