1. Determine the best current density in A/mm’ fora 3-@ overhead line if the line is in use for 2000 hours per year and if the conductor costing Rs 3-0 per kg has a specific resistance of 1-73 Q m and weighs 6200 kg/m’, Cost of energy is 10 Phanit. Interest and depreciation é is 12% of conductor cost. [0-705 A/mm?

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
Chapter4: Transmission Line Parameters
Section: Chapter Questions
Problem 4.2MCQ: Overhead transmission-line conductors are bare with no insulating cover. (a) True (b) False
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1. Determine the best current density in A/mm’ fora 3-@ overhead line if the line is in use for 2000 hours per year and if the conductor costing Rs 3-0 per kg has a specific resistance of 1-73 Q m and weighs 6200 kg/m’, Cost of energy is 10 Phanit. Interest and depreciation é is 12% of conductor cost. [0-705 A/mm?]

1. Determine the best current density in A/mm' for a 3-0 overhead line if the line is in use for 2000 hours
per year and if the conductor costing Rs 3-0 per kg has a specific resistance of 1-73 2m and weighs 6200
kg/m. Cost of energy is 10 P/unit. Interest and depreciation is 12% of conductor cost. [0-705 A/mm]
Transcribed Image Text:1. Determine the best current density in A/mm' for a 3-0 overhead line if the line is in use for 2000 hours per year and if the conductor costing Rs 3-0 per kg has a specific resistance of 1-73 2m and weighs 6200 kg/m. Cost of energy is 10 P/unit. Interest and depreciation is 12% of conductor cost. [0-705 A/mm]
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