Q. LMTD can't be used as such without a correction factor for the

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Q. Fqra cold viscous feed, backward feed gives __________ than forward feed.

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Q. Walls of a cubical oven are of thickness l, and they are made of material of thermal conductivity k. The temperature inside the oven is 100°C and the inside heat transfer co-efficient is 3k/l. If the wall temperature on the outside is held at 25°C, what is the inside wall temperature in degree centigrade ?

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Q. The characteristic dimensionless groups for heat transfer to a fluid flowing through a pipe in laminar flow are

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Q. Heat transfer rate described by Fourier's law will decrease, if the __________ increases.

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Q. A black body does not __________ radiation.

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Q. The capacity of double-effect evaporator is less than half of the capacity of two single effects, each of which is operating over same terminal temperature difference, when the

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Q. Peclet number (Pe) is given by

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Q. Nusselt number is the ratio of the

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Q. Prandtl number is the ratio of

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

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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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