MCQs: If ‘D’ is the inside diameter of the shell of a shell and tube heat exchanger, then the baffle spacing is usually in the range of__________________?
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MCQs: 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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MCQs: Scale up problem in design based on the similarity concept takes into account _______________ similarity?
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MCQs: The longitudinal stress induced in a thin walled cylindrical vessel under internal pressure is_________________?
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MCQs: 1.2 to 3.8 cms is the value of the ______________________?
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MCQs: In a pressure vessel containing multiple openings of various dimensions at different parts, stress concentration at the edges of the opening is maximum which becomes negligibly small beyond the area covered by ______________ times the hole diameter?
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MCQs: Removable connection of tubes to tube sheet is called___________________?
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MCQs: Bubble cap tray is the most commonly used tray in large distillation column, because______________?
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MCQs: (Le/D) for a Tee (used as elbow, entering run) would be around _______________________?
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MCQs: At equal mass velocities, the values of film co-efficients for gases as compared to that for liquids are generally ?
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MCQs: The design stress, which is more than the damaging stress, is the least unit stress that will render a member unfit for service before the end of its normal life. The design stress factor or factor of safety indicates the margin between design stress and the _______________ stress?
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MCQs: Baffles are provided in a shell and tube heat exchanger to increase the turbulence and velocity of the shell side fluid. Which of the following shaped baffles does not fall in the category of transverse baffle ?
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MCQs: Value of Peclet number = ∞, is the representative of___________________?
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MCQs: Steam economy is defined as the amount of evaporation per unit amount of steam used, while the capacity is the total evaporation obtained per hour. Use of multiple effects in evaporation ?
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MCQs: Value of Peclet number = 0, is the representative of ____________________?
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MCQs: In case of a ‘thin’ pressure vessel, the ratio of its diameter to wall thickness is_________________?
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MCQs: For a 25 mm hole drilled in plates to be riveted, the shank diameter of the rivet should be _______________ mm?
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MCQs: The ratio of the largest load in a test to the original cross-sectional area of the test specimen is called the _____________ stress?
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MCQs: Factor of safety (i.e., overdesign factor) in heat transfer equipments is about _____________ percent more than the actual/theoretical design factor?
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MCQs: Wind load consideration in the design of a support can be neglected, when the vessel is___________________?
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