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

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Q. Pick out the wrong statement:

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Q. Heat transfer by __________ may not necessarily require the presence of a medium.

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Q. Pick out the correct statement.

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Q. In a shell and tube type heat exchanger, the floating tube bundle heat arrangement is used

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Q. Stefan-Boltzman law applies to __________ body.

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Q. The film co-efficient is decreased due to the presence of non-condensing gases in the vapors. The film co-efficient of superheated vapor as compared to that of saturated vapor is

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Q. Planck's distribution law is valid for __________ bodies.

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Q. For hot feed, forward feeding as compared to backward feeding results in __________ economy.

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Q. Radiation energy is emitted by all the substances, which are above

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

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Q. For what value of Prandtl number, St = f/2?

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Q. In a shell and tube heat exchanger,

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Q. Dietus-Boelter equation used for the determination of heat transfer co-efficient is valid

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Q. The range of electromagnetic spectrum important in heat transfer by radiation is __________ microns.

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Q. Use of transverse baffles in a shell and tube heat exchanger is done to increase the

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Q. The actual temperature drop across the heating surface of an evaporator depends on the

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Q. Economy of a multiple effect evaporator depends upon the

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Q. For the same heat load and mass flow rate in the tube side of a shell and tube heat exchanger, one may use multipass on the tube side, because it

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Q. When vaporisation takes place through a blanketting film of gas, the phenomenon is termed as __________ boiling.

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