For a 500 Hz frequency excitation, a 50 km long power line will be modeled as
For a 500 Hz frequency excitation, a 50 km long power line will be modeled as
Right Answer is:
Long LIne
SOLUTION
For one full wave variation, the length of the line for 50 Hz supply will be given as
f λ = v
Where
f = Frequency
λ = length of the line
v = Velocity of the wave i.e 3 x 108 m/s
For 500 Hz
λ = v/f
= 3 x 108 / 500
= 600 Km
Hence the transmission line above 250 Km is treated as a Long transmission line.