What is the
main drawback of the underground transmission system compared to the overhead
transmission system?
Exposure to
lightning
Heavy initial
cost
Exposure to atmospheric hazards such as smoke, ice, wind
Induction interference between power and communication circuits
Heavy initial
cost
The main
drawback of the underground transmission system compared to the overhead
transmission system is heavy initial cost. If any fault occurs it can be
complicated to remove. While in overhead system can be easily maintained.
Hence, the
correct option is (B).
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