61. Compensation against openings in process vessels for giving inlet and outlet connections, for providing sight glasses and manholes etc. is provided for strength and rigidity. The most efficient type of compensation is of __________ type.
62. In the design of a bag filter, the gas temperature is an important consideration, as it affects the
63. 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?
64. Excessive liquid gradient on a tray may result in the
65. The maximum liquid gradient over a tray must not exceed
66. Safety valves are provided in chemical equipments to guard against excessive
67. The stress developed in a material without any permanent set is called the
68. Low pressure steam (with saturation temperature between 105 to 120°C) is usually used in the vacuum evaporators, which normally employ a vacuum of about __________ mm Hg (referred to a 760 mm mercury barometer).
69. In seive plate column, holes are drilled or punched in sizes ranging from 2.5 to 12 mm (5 mm being widely used). The hole pitch is normally __________ times the hole diameter to give the required hole area.
70. A claming section before the liquid flows into the downcomer is privided to
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