Hydraulics & Fluid Mechanics
Select the correct statement

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

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Hydraulics & Fluid Mechanics
The horizontal component of force on a curved surface is equal to the

product of pressure intensity at its centroid and area
force on a vertical projection of the curved surface
force on the horizontal projection of the curved surface
weight of liquid vertically above the curved surface

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