Question: 3 . A 5 0 Hz , 3 - phase, 3 0 0 km long transmission line has the following parameters per km: r =

3. A 50 Hz,3-phase, 300 km long transmission line has the following parameters
per km: r =0.133,=0.417 and y =3.34S. The power to the load is 50
MW at the rated voltage 220 kV and 0.8 pf lag. Determine: ...............(25 pts)
a) Sending end voltage and current.
b) Efficiency.

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