EXAMIANS
Which of the following packing materials provides for maximum mass transfer?
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For turbulent flow (NRe > 2100) of low viscosity fluid (μ > 20cp) in steel pipes, the optimum inside pipe diameter is given by(where, Q = fluid flow rate, ft³/sec.ρ = fluid density, lb/ft³ μ = fluid viscosity, centipoise Di = optimum inside pipe diameter, inches)
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In case of a shell and tube heat exchanger, the effect of L/D on inside film heat transfer co-efficient (hi) vanishes after a Reynold number of
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__________ head is the most economical for cylindrical vessels designed for operating at high pressure (> 15 atm.).
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Hold up of material in a operating rotary drier is in the range of
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Safety valves are provided in chemical equipments to guard against excessive
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Which of the following is not a graphical method (but is an analytical method) for the calculation of theoretical number of stages in case of continuous binary distillation?
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For a given design of bubble cap, the number of bubble caps to be used per tray is set by the
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For a cylinderical vessel of moderate height, the weld joint efficiency for joints parallel to the cylinderical axis is given as 1.0, while for joints along the girth (circumference) it is given as 0.8. In calculating the shell wall thickness using code formula for an internally pressurised cylinderical vessel, what value of weld joint efficiency should be used?
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The ideal size of round bubble caps to be used in industrial distillation column having a diameter of 3-6 metres is __________ cms.
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