This experiment is conducted to determine the emissivity of a certain material. A longcylindrical rod of diameter D₁ = 0.01 m is coated with this new material and is placed in anevacuated long cylindrical enclosure of diameter D₂ = 0.1 m and emissivity 2 = 0.95, whichis cooled externally and maintained at a temperature of 200 K at all times. The rod isheated by passing the electric current through it. When steady operating conditions arereached, it is observed that the rod is dissipating electric power at a rate of 16 W per unit ofits length, and its surface temperature is 600 K. Based on these measurements, determinethe emissivity of the coating on the rod.The emissivity of the coating on the rod is 0.1165

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cal rod of diameter D₁ = 0.01 m is coated with this new material and is placed in an ed long cylindrical enclosure of diameter D₂ = 0.1 m and emissivity 2 = 0.95, which d externally and maintained at a temperature of 200 K at all times. The rod is by passing the electric current through it. When steady operating conditions are I, it is observed that the rod is dissipating electric power at a rate of 16 W per unit of h, and its surface temperature is 600 K. Based on these measurements, determine ssivity of the coating on the rod. issivity of the coating on the rod is 0.1165 >

cal rod of diameter D₁ = 0.01 m is coated with this new material and is placed in an ed long cylindrical enclosure of diameter D₂ = 0.1 m and emissivity 2 = 0.95, which d externally and maintained at a temperature of 200 K at all times. The rod is by passing the electric current through it. When steady operating conditions are I, it is observed that the rod is dissipating electric power at a rate of 16 W per unit of h, and its surface temperature is 600 K. Based on these measurements, determine ssivity of the coating on the rod. issivity of the coating on the rod is 0.1165 >

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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Radiation

Radiation can be described as the energy in the form of a particular matter or electromagnetic waves traveling in the air and can be in the form of light, sound, and heat. Radiation can be detected through special instruments like X-rays. The radiation from a cooler object is less intense as compared to the radiation from hot objects.

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This experiment is conducted to determine the emissivity of a certain material. A long
cylindrical rod of diameter D₁ = 0.01 m is coated with this new material and is placed in an
evacuated long cylindrical enclosure of diameter D₂ = 0.1 m and emissivity 2 = 0.95, which
is cooled externally and maintained at a temperature of 200 K at all times. The rod is
heated by passing the electric current through it. When steady operating conditions are
reached, it is observed that the rod is dissipating electric power at a rate of 16 W per unit of
its length, and its surface temperature is 600 K. Based on these measurements, determine
the emissivity of the coating on the rod.
The emissivity of the coating on the rod is 0.1165

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