Hydraulics & Fluid Mechanics
The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the centriod, if

the area is horizontal
the area is inclined
the area is vertical
All of these

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Hydraulics & Fluid Mechanics
Choose the wrong statement

when in equilibrium, fluids can sustain shear forces
fluids conform to the shape of the con-taining vessels
fluids are capable of flowing
when in equilibrium, fluids cannot sustain tangential forces

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

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

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