Question OneExplain how heat is transferred from one point to another illustrating with appropriate diagram.Calculate the heat flow per square meter (heat flux) through water medium with thermal conductivity of 0.6, flowing in a 5 cm thickness space, if the temperatures on the two surfaces are 50 and 210°C, respectively. Question 2Distinguish between force and free convection with the aid of appropriate illustrations.What is the approximate temperature difference between a hot plate and the surrounding air if the heat flux from the plate is 800 W/m2? Assume that the air is flowing past the surface with a velocity of 5 m/s giving a heat transfer coefficient of 20 W/(m2K). Question 3Explain the differences between laminar and turbulent flowWater (ν = 0.86x10-6m2/s) flows through a tube with the diameter 12 mm at a velocity of 2 m/s. Determine if the flow is laminar or turbulent!

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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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Question One

Explain how heat is transferred from one point to another illustrating with appropriate diagram.
Calculate the heat flow per square meter (heat flux) through water medium with thermal conductivity of 0.6, flowing in a 5 cm thickness space, if the temperatures on the two surfaces are 50 and 210°C, respectively.

Question 2

Distinguish between force and free convection with the aid of appropriate illustrations.
What is the approximate temperature difference between a hot plate and the surrounding air if the heat flux from the plate is 800 W/m²? Assume that the air is flowing past the surface with a velocity of 5 m/s giving a heat transfer coefficient of 20 W/(m²K).

Question 3

Explain the differences between laminar and turbulent flow
Water (ν = 0.86x10^-6m²/s) flows through a tube with the diameter 12 mm at a velocity of 2 m/s. Determine if the flow is laminar or turbulent!

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