Hydraulics & Fluid Mechanics
In which of the following the friction drag is generally larger than pressure drag?

a circular disc or plate held normal to flow
a sphere
a cylinder
an airfoil

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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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