Answered: (A) Choose the right answer 1.The…

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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Transcribed Image Text:(A) Choose the right answer 1.The temperature profile for heat conduction through a wall of constant thermal conductivity in the presence of heat source is a. straight line. b. parabolic. c. logarithmic. d. hyperbolic 2. A furnace wall has a thickness L=200 cm and k=0.1 W/(mK) with surface temperatures of 600°C and 400 C. The rate of heat transfer is a. 100 W/m? b. 200 W/m? c. 50 W/m? d. 300 W/m? 3. The ratio of heat transfer of a fin to the heat transfer without fin is referred to as a. fin effectiveness. b. b. fin efficiency. c. b. fin resistance. d. fin conductance. 4. The internal thermal resistance of a solid can be ignored if the Biot number is less than а. 0.1 b. 0.5 с. 1 d. Fourier number 5. The quantity having the dimension of time is often called the time constant of a thermocouple hA а. PCV hV b. c. PCV hA d. PCA hV PCA

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