1.

An extra high voltage transmission line of length 300 km can be approximated by a lossless line having propagation constant β = 0.00127 radians per km. Then the percentage ratio of line length to wavelength will be given by  (A) 24.24 % (B) 12.12 %  (C) 19.05 % (D) 6.06 % 

Answer»

Correct option (D) 6.06 %

Explanation:

l = 300 km,

β = 0.00127 rad/km

Wavelength is given by,

λ = 2π/β = 2π/0.00127 = 4947.39Km

% Ratio = l/λ x 100%

% Ratio = 300/4947.39 x 100% = 6.06%



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