71. The location of centre of pressure, which defines the point of application of the total pressure force on the surface, can be calculated by applying the principle of moments according to which "sum of the moment of the resultant force about an axis is equal to the sum of the components about the same axis". The centre of pressure of a rectangular surface (of width 'w') immersed vertically in a static mass of fluid is at a depth of (where, y = depth of the liquid)
72. A special type of liquid transporting device is the diffuser pump, in which __________ are minimised.
73. A pipe of I.D. 4 m is bifurcated into two pipes of I.D. 2 m each. If the average velocity of water flowing through the main pipe is 5 m/sec, the average velocity through the bifurcated pipes is
74. Weber number is the ratio of inertial force to __________ force.
75. One stoke (unit of kinematic viscosity) is equivalent to
76. When the water is warm, the height to which it can be lifted by a pump
77. For a particle settling in water at its terminal settling velocity, which of the following is true?
78. Pick out the correct statement.
79. Pick out the wrong statement.
80. Consider two pipes of same length and diameter through which water is passed at the same velocity. The friction factor for rough pipe is f1 and that for smooth pipe is f2. Pick out the correct statement.
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