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.Management Sciences
A. directly proportional to the surface area of the body
B. directly proportional to the temperature difference on the two faces of the body
C. dependent upon the material of the body
D. inversely proportional to the thickness of the body
E. all of the above
Related Mcqs:
- When heat is transferred form hot body to cold body, in a straight line, without affecting the intervening medium, it is referred as heat transfer by __________________?
- A. conduction B. convection C. radiation D. conduction and convection E. convection and radiation...
- Thermal conductivity of air with rise in temperature__________________?
- A. increases B. decreases C. remains constant D. may increase or decrease depending on temperature E. none of the above...
- Unit of thermal diffusivity is_________________?
- A. m2/hr B. m2/hr°C C. kcal/m2 hr D. kcal/m.hr°C E. kcal/m2 hr°C...
- The value of Prandtl number for air is about _______________________?
- A. 0.1 B. 0.3 C. 0.7 D. 1.7 E. 10.5...
- Two plates spaced 150 mm apart are maintained at 1000°C and 70°C. The heat transfer will take place mainly by ___________________?
- A. convection B. free convection C. forced convection D. radiation E. radiation and convection...
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