The sag of
the conductors of a transmission lines
is 2.5 m when the span is 250 m. Now if the height of the supporting towers is increased
by 2.5%, the sag will
reduced by
25%
increase by
25%
reduce by
12.5%
remain
unchanged
remain
unchanged
Sag of transmission line is given by
Where,
If height of
supporting tower is increase will have no effect on sag
Hence,
Sag remains
unchanged.
Hence, the
correct option is (D).
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