Q. Forced circulation evaporators are useful for the concentration of viscous, salting and scale forming liquors. Which of the following is a forced circulation evaporator?

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Q. "The ratio of the total emissive power to the absorptivity for all bodies is same at ther-mal equilibrium". This is __________ law.

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Q. View factor is important in heat transfer by

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Q. The advantage of using a 1 - 2 shell and tube heat exchanger over a 1 - 1 shell and tube heat exchanger is

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Q. For a multipass shell and tube heat exchanger, the LMTD correction factor is always

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Q. If heat transfer rate varies with the time, it is termed as

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Q. Pick out the wrong statement.

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Q. Tube expansion allowances exist in __________ heat exchanger.

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Q. Pick out the wrong statement.

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Q. Agitated film evaporator is suitable for concentrating __________ liquids.

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Q. The thickness of condensate layer in filmwise condensation depends on the

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Q. If the thermal conductivity of a wall material is independent of temperature, the steady state temperature distribution in the very large thin plane wall having steady, uniform surface tempeature follows __________ law.

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Q. Choose the correct equation.

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Q. In a forward feed multiple effect evaporator unit

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Q. In case of heat flow by conduction for a cylindrical body with an internal heat source, the nature of temperature distribution is

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Q. For heat flow through very thick walled cylinder, use____mean radius.

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Q. Indirect contact heat exchangers are preferred over direct contact heat exchangers, because

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Q. In SI units, fouling factor is expressed in

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Q. An ejector is used to

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Q. Extremely large or small volumes of fluids are generally best routed through the shell side of a shell and tube heat exchanger, because of the

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