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Hamad Heat Transfer 14/07/2021
A. p = 0, x = 0 and a = 1
B. p=l,x = 0,anda = 0
C. p = 0, T= l,anda = 0
D. X = 0, a + p = 1
E. a = 0,x + p= 1
- When heat is Transferred by molecular collision, it is referred to as heat transfer by __________________?
- A. conduction B. convection C. radiation D. scattering E. convection and radiation...
- Thermal conductivity of air at room temperature in kcal/m hr °C is of the order of__________________?
- A. 0.002 B. 0.02 C. 0.01 D. 0.1 E. 0.5...
- The amount of heat flow through a body by conduction is_______________?
- 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...
- In heat exchangers, degree of approach is defined as the difference between temperatures of________________?
- A. cold water inlet and outlet B. hot medium inlet and outlet C. hot medium outlet and cold water inlet D. hot medium outlet and cold water outlet E. none of the above...
- The ratio of the energy absorbed by the body to total energy falling on it is called_________________?
- A. absorptive power B. emissive power C. absorptivity D. emissivity E. none of the above...
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