(Solved): 1. A single phase overhead transmission line delivers 1100KW at 33KV at 0.8 p ...

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1. A single phase overhead transmission line delivers $1100\mathrm{KW}$ at $33\mathrm{KV}$ at 0.8 p.f. lagging. The total resistance and inductive reactance of the line are $10?$ and $15?$ respectively. Determine : i) sending end voltage ii) sending end power factor and iii) transmission efficiency. 2. An overhead 3- phase transmission line delivers $5000\mathrm{KW}$ at $22\mathrm{kV}$ at 0.8 p.f. lagging. The resistance and reactance of each conductor are $4?$ and $6?$ respectively. Determine : i) sending end voltage ii) percentage regulation and iii) transmission efficiency.