The density of air is same at different heights.

More Questions from Hydraulics and Fluid Mechanics

• The ratio of the inertia force to the surface tension force is called Weber's number.
• The rise, in water level, which occurs during the transformation of the unstable shooting flow to the stable streaming flow is called hydraulic jump.
• If a body floating in a liquid occupies a new position and remains at rest in this new position, when given a small angular displacement, The body is said to be in __________ equilibrium.
• A flow is called sub-sonic, if the Mach number is
• The loss of head at exit of a pipe is
• Which of the following statement is correct?
• The most economical section of a rectangular channel is one which has hydraulic mean depth or hydraulic radius equal to
• A flow through an expanding tube at increasing rate is called unsteady non-uniform flow.
• The loss of head at entrance in a pipe is (where v = Velocity of liquid in the pipe)
• In a short cylindrical external mouthpiece, the vena contracta occurs at a distance __________ the diameter of the orifice from the outlet of orifice.

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