71. Liquids transmit pressure equally in all the directions. This is according to
72. The hydraulic mean depth or the hydraulic radius is the ratio of
73. The mass of 2.5 m3 of a certain liquid is 2 tonnes. Its mass density is
74. Saving of work done and power by fitting an air vessel to double acting reciprocating pump is of the order of
75. Saving of work done and power by fitting an air vessel to single acting reciprocating pump is of the order of
76. The velocity of jet of water traveling out of opening in a tank filled with water is proportional to
77. The loss of pressure head in case of laminar flow is proportional to
78. In a centrifugal pump, the regulating valve is provided on the
79. Piezometer is used to measure
80. Differential manometer is used to measure
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