38701. In a shell and tube heat exchanger, the overall heat transfer co-efficient is proportional to the tube side (volumetric flow rate)0.8. This is valid, only when the ratio of the tube side film resistance to the total resistance is almost equal to
38702. Which of the following types of reactors is the safest from operation point of view ?
38703. In a bag filter, the pressure drop increases directly as the
38704. The LMTD correction factor (FT) is applied in __________ heat exchangers.
38705. Movement of pipeline caused by thermal expansion is taken care by providing
38706. For a cylindrical shell, (subject to the thickness of uppermost course being more than the minimum for diaofthe tank in question), the thickness of the courses of shell
38707. In the design of a paddle agitator, the ratiois normally taken as
38708. 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.
38709. Hole diameter of the seive trays in the distillation column ranges from __________ mm.
38710. Factor of safety (i.e., overdesign factor) in heat transfer equipments is about __________ percent more than the actual/theoretical design factor.
38711. In actual operation of distillation column, the vapour is not distributed uniformly among the bubble caps, primarily because of the
38712. The minimum shell thickness for tank ≤ 15 metres diameter is limited to __________ mm, for reasons of elastic stability.
38713. 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
38714. Brass valves are usually made for pipe sizes __________ inches.
38715. At the following point for a given packing and set of fluids, the pressure drop per metre of packed height, with variation in fluid rates and operating pressure
38716. In a shell and tube heat exchanger, triangular pitch arrangement as compared to square pitch arrangement
38717. Pick out the wrong statement about routing of fluids in a shell and tube heat exchanger.
38718. The necessary wall thickness for a metallic storage vessel is a function of the
38719. 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.
38720. Which one of the following subjects is in the Concurrent List?
38721. Pick out the wrong statement pertaining to the design of a horizontal tube evaporator.
38722. Weep holes provided in the plates of a distillation column
38723. Steam is preferred to be used as a heating medium in heat exchangers, because of its
38724. __________ shapedroof is the most commonly used roof for cylinderical storage tanks.
38725. Pick out the wrong statement pertaining to 'Horton sphere' used for the storage of liquid ammonia.
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