Hydraulics & Fluid Mechanics
Select the correct statement

A barometer reads the difference be-tween local and standard atmospheric pressure
Local atmospheric pressure is always below standard atmospheric pressure
Local atmospheric pressure depends upon elevation of locality only
Standard atmospheric pressure is the mean local atmospheric pressure a* sea level

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Hydraulics & Fluid Mechanics
Fluid is a substance that

cannot remain at rest under action of any shear force
cannot be subjected to shear forces
always expands until it fills any container
has the same shear stress.at a point regardless of its motion

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Hydraulics & Fluid Mechanics
According to Bernoulli’s equation for steady ideal fluid flow

principle of conservation of mass holds
total energy is constant throughout
velocity and pressure are inversely proportional
the energy is constant along a stream-line but may vary across streamlines

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