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Mechanical Engineering Objective Questions { Fluid Mechanics }

71. To avoid an interruption in the flow of a syphon, an air vessel is provided
A.At the inlet
B.At the outlet
C.At the summit
D.Ay nay point between inlet and outlet

72. The vapour pressure over the concave surface is
A.Less than the vapour pressure over the plane surface
B.Equal to the vapour pressure over the plane surface
C.Greater than the vapour pressure over the plane surface

73. The peoperty by virtue of which a liquid opposes relative motion between its different layers is called
A.Surface tension
B.Co-efficient of viscosity

74. The process of diffusion of one liquid into the other through a semi-permeable membrane is called
C.Surface tension

75. The continuity equation is connected with
A.Viscous/unviscous fluids
B.Compressibility of fluids
C.Conservation of mass
D.Steady/unsteady flow

76. The rise or depression of liquid in a tube due to surface tension with increase in size of tube will
B.Remain unaffected
C.May increase or decrease depending on the characteristics of liquid

77. Liquids transmit pressure equally in all the directions. This is according to
A.Boyle's law
B.Archimedes principle
C.Pascal's law
D.Newton's formula

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