EXAMIANS
In a shell and tube heat exchanger, the shortest centre to centre distance between the adjacent tubes is
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Pressure drop due to pipe fittings can be estimated by the equation, ΔP/p = 4f.Le/D.V2/2gc, where, Le = equivalent length of straight pipeline which will incur the same frictional loss as the fitting and D = diameter of the fitting. The value of Le/D (dimensionless) for 45° elbow and 180° close return bends would be respectively around
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In a rotary drier, the average retention time of solid is(where Z = length of the drier, metres ρ = apparent solid density, kg/m³ L = flow rate of dry solids, kg/see. m² drier cross-section H = hold up of solid.)
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The ratio of shear stress to shear strain is called
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In a multiple effect evaporator system having 'n' effects, the amount of water evaporated per unit surface area in approximately equal to __________ times that in a single effect.
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Which of the following lengths of heat exchanger tubes are normally not used in practice?
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A pressure vessel is said to be made of 'thick' shell, if the ratio of its diameter to wall thickness is
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A binary liquid azeotropic mixture has boiling point higher than either of the components, when it shows __________ deviation from Raoult's Law.
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Lessing ring is formed by the addition of a partition across the centre of a raschig ring, which results in an area increase of about __________ percent.
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The value of fouling factor depends upon the
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