Find the minimum amount of diameter for the insulation of a cylindrical electrical cable? Radius of the cable is 3 mm, length is 2 m, thermal conductivity is 20 W/(m^2*K) and convective coefficient is 5 W/(m*K) 12 mm 4 mm not sufficient information 3 mm 8 mm

Find the minimum amount of diameter for the insulation of a cylindrical electrical cable? Radius of the cable is 3 mm, length is 2 m, thermal conductivity is 20 W/(m^2K) and convective coefficient is 5 W/(mK) 12 mm 4 mm not sufficient information 3 mm 8 mm

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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Concept explainers

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.

Question

Find the minimum amount of diameter for the insulation of a cylindrical
electrical cable? Radius of the cable is 3 mm, length is 2 m, thermal
conductivity is 20 W/(m^2*K) and convective coefficient is 5 WI(m*K)
12 mm
4 mm
not sufficient information
3 mm
8 mm

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