EXAMIANS
A perfect black body is a perfect __________ of radiation
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Fresh orange juice contains 12% (by weight) solids and the rest water 90% of the fresh juice is sent to an evaporator to remove water and subsequently mixed with the remaining 10% of fresh juice. The resultant product contains 40% solids. The kg of water removed from 1 kg fresh juice is
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Heat sensitive materials can be concentrated in an evaporator employing
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Which has the lowest Prandtl number?
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In counter flow compared to parallel flow,
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What is the absorptivity of a black body?
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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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A steel sphere of radius 0.1 m at 400°K is immersed in an oil at 300°K. If the centre of the sphere reaches 350°K in 20 minutes, how long will it take for a 0.05 m radius steel sphere to reach the same temperature (at the centre) under identical conditions ? Assume that the conductive heat transfer co-efficient is infinitely large.
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Nusselt number for full developed, laminar, constant property flow in a pipe at uniform heat flux is
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The characteristic dimensionless groups for heat transfer to a fluid flowing through a pipe in laminar flow are
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