81. In turbulent flow, a rough pipe has the same friction factor as a smooth pipe
82. In centrifugal pump operation, the cavitation can be eliminated by maintaining suction pressure __________ the vapor pressure of the liquid at the suction temperature.
83. Drag co-efficient for motion of spherical particles in a stationary fluid in the stoke's law range is
84. Vena-contracta formed during flow of a liquid through an orificemeter has
85. Hydraulic intensifier is used for increasing the
86. In case of end to end connection of two or more pipes in series, the __________ each pipe.
87. For the manometer set up shown in the figure, the pressure difference PA - PB is given by
88. Pressure difference between two points in vessels, pipelines or in two different pipelines can be measured by a differential manometer. The pressure difference measured as the mm of water coloumn in case of mercury-water, differential manometer is equal to (where, H = difference in height of mercury column in mm).
89. The time of oscillation of a floating body is
90. The line traced by a single fluid particle as it moves over a period of time is called __________ line.
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