3.1 A 5 km long three transmission line is required to supply a load of 5MVA at 0.8 power factor lagging at 33kV through

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3 1 A 5 Km Long Three Transmission Line Is Required To Supply A Load Of 5mva At 0 8 Power Factor Lagging At 33kv Through 1 (89.88 KiB) Viewed 29 times

3.1 A 5 km long three transmission line is required to supply a load of 5MVA at 0.8 power factor lagging at 33kV throughout the year. The cost of cable including installation is (20a +20) Rand per meter (where 'a' is the cross-sectional area of the conductor in cm2). The cost of energy is 11 cents per kWh, interest and depreciation charges amount to 12%. Assume the resistivity of the conductor to be 1.73µ0cm and calculate the most economical conductor size. [8]