2.1 (A). A power transmission cable consists of ten copper wires each of 1.6 mm diameter surrounding three steel wires each of 3 mm diameter, Determine the combined E for the compound cable and hence determine the extension of a 30 m length of the cable when it is being laid with a tension of 2 kN. For steel, E = 200 GN/m²; for copper, E = 100 GN/m². 2.2 (A). If the maximum stress allowed in the copper of the cable of problem 2.1 is 60 MN/m², determine the maximum tension which the cable can support. [151.3 GN/m²; 9.6 mm.) [3.75 kN.)

2.1 (A). A power transmission cable consists of ten copper wires each of 1.6 mm diameter surrounding three steel wires each of 3 mm diameter, Determine the combined E for the compound cable and hence determine the extension of a 30 m length of the cable when it is being laid with a tension of 2 kN. For steel, E = 200 GN/m²; for copper, E = 100 GN/m². 2.2 (A). If the maximum stress allowed in the copper of the cable of problem 2.1 is 60 MN/m², determine the maximum tension which the cable can support. [151.3 GN/m²; 9.6 mm.) [3.75 kN.)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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2.1Apower transmission cable consists of ten copper wires each of 1.6 mm diameter surrounding three steel wires each of 3 mm diameter. Determine the combined E for the compound cable and hence determine the extension of a 30 m length of the cable when it is being laid with a tension of 2kN. For steel, E = 200GN/m2; forcopper, E = 100GN/m2. [151.3 GN/m2; 9.6 mm]
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2.1 (A). A power transmission cable consists of ten copper wires each of 1.6 mm diameter surrounding three steel wires each of 3 mm diameter. Determine the combined E for the compound cable and hence determine the extension of a 30 m length of the cable when it is being laid with a tension of 2 kN. For steel, E 200 GN/m²; for copper, E = 100 GN/m². [151.3 GN/m²; 9.6 mm.]
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