Question 3: A 13.8-kV, single-phase generator supplies power to a load through a transmission line. The load's impedance

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Question 3 A 13 8 Kv Single Phase Generator Supplies Power To A Load Through A Transmission Line The Load S Impedance 1 (38.3 KiB) Viewed 37 times

Question 3: A 13.8-kV, single-phase generator supplies power to a load through a transmission line. The load's impedance is Z500 36.87°, and the transmission line's im- pedance is Z= 60 2600 VG = 13.840 kV V = 13.820kV2 1:10 T₁ 60L 60°0 602 600 (b) 10:1 500/36.87%2 Zad 500436.872 FIGURE P2-3 Circuits for Problem 2-14: (a) without transformers and (b) with transformers. Z (a) If the generator is directly connected to the load (Figure P2-3a), what is the ra- tio of the load voltage to the generated voltage? What are the transmission losses of the system? (b) What percentage of the power supplied by the source reaches the load (what is the efficiency of the transmission system)? (c) If a 1:10 step-up transformer is placed at the output of the generator and a 10:1 transformer is placed at the load end of the transmission line, what is the new ratio of the load voltage to the generated voltage? What are the transmission losses of the system now? (Note: The transformers may be assumed to be ideal.) (d) What percentage of the power supplied by the source reaches the load now? (e) Compare the efficiencies of the transmission system with and without transformers.