• A two-core feeder 3 km long supplies a maximum current of 200 A at 400 volts. The demand is such that the copper loss per annum is that which would be produced by the full load current flowing for 8 months. The resistance and cost of conductor 1 km long and 1mm2 section of conductor as 1/58 ohm and OMR(72 a + 480). The interest and depreciation charges are 10%. The cost of energy is 10 baisa per unit. Find the most economical cross section.

• A two-core feeder 3 km long supplies a maximum current of 200 A at 400 volts. The demand is such that the copper loss per annum is that which would be produced by the full load current flowing for 8 months. The resistance and cost of conductor 1 km long and 1mm2 section of conductor as 1/58 ohm and OMR(72 a + 480). The interest and depreciation charges are 10%. The cost of energy is 10 baisa per unit. Find the most economical cross section.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.7MCQ: Consider Figure 3.5. Match the following, those on the left to those on the right. (i) Im (a)...

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