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Chemical Heat Transfer Quiz 10

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Chemical Heat Transfer Quiz 10

1 / 26

While the total emissivity of a perfect black body is unity, the same for a real body is___________?

2 / 26

With the increase of temperature, the Col-burn jH factor_______?

3 / 26

Which of the following has the lowest overall heat transfer co-efficient ?

4 / 26

Which of the following parameters is increased by use of finned tube in a multipass shell and tube heat exchanger ?

5 / 26

Which of the following has the lowest Prandtl number ?

6 / 26

Which of the following parameters of the fluid is not very important, while deciding its route in a shell and tube heat exchanger ?

7 / 26

Which of the following has the minimum absorptivity ?

8 / 26

With increase in temperature, the thermal conductivity of a gas _____?

9 / 26

Which of the following is directly concerned with the heat transfer ?

10 / 26

With increase in temperature, the thermal conductivity of fresh lubricating oil _____?

11 / 26

Which of the following is unimportant in forced convection ?

12 / 26

Which of the following has the highest thermal conductivity ?

13 / 26

With increase in temperature, the total emissivity of conductors______?

14 / 26

Which of the following is generally considered as opaque surface towards radiations ?

15 / 26

With increase in temperature, the thermal conductivity of non-metallic amorphous solids__________?

16 / 26

Which of the following is not used as a medium for high temperature heating ?

17 / 26

Which of the following is the most widely used heat insulating material for pipelines carrying steam ?

18 / 26

Which of the following is correct ?

19 / 26

Which type of heat exchanger is preferred for heavy heat loads ?

20 / 26

Which of the following is concerned with both heat and mass transfer ?

21 / 26

Which one gives the monochromatic emissive power for black body radiation ?

22 / 26

Which of the following situations can be approximated to a steady state heat transfer system ?

23 / 26

Which of the following has the minimum thermal conductivity ?

24 / 26

With increase in porosity, the thermal conductivity of a solid substance___________?

25 / 26

With increase in temperature, the thermal conductivity of most liquids__________?

26 / 26

With increase in the distance between the heat source and the object receiving the heat, the radiation heat transfer ?

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