71. The actual velocity at vena-contracta for flow through an orifice from a reservoir is given by
72. If 'x' is the depth of flow in an open channel of large width, then the hydraulic radius is equal to
73. In centrifugal pumps, cavitation occurs, when pressure of the impeller eye or vane becomes
74. A compressor that takes suction at a pressure below atmospheric and discharge against atmospheric pressure is called a __________ pump.
75. Check valve is used for __________ flow.
76. A rotameter works on the principle of __________ pressure drop.
77. The continuity equation of fluid mechanics utilises the principle of conservation of
78. Which of the fluid forces are not considered in the Reynold's equation of flow?
79. A Bingham fluid of viscosity μ = 10 Pa.s and yield stress, τ0 = 10 KPa, is shared between flat parallel plates separated by a distance of 10-3 m. The top plate is moving with a velocity of 1 m/s. The shear stress on the plate is
80. Piezometric head is the sum of the __________ heads.
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