Civil Engineering :: Hydraulics

A pitot tube is used to measure

The thickness of a sharp crested weir is kept less than

The property of steam function Ïˆ is :

The maximum vacuum created at the summit of a syphon is

If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.8) is 0.1 kg/cm^{2}, the pressure at a depth of 2.5 m, is

The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at its centroid, if

If the volume of a liquid weighing 3000 kg is 4 cubic metres, 0.75 is its

Bernoulli's equation assumes that

The time required to close a valve gradually is (where L is the length of pipe and C = velocity of pressure wave)

A syphon is used
A.
ψ is constant everwhere on any stream line 
B.
the flow around any path in the fluid is zero for continuous flow 
C.
the rate of change of ψ with distance in an arbitrary direction, is proportional to the component of velocity normal to that direction 
D.
the velocity vector may be found by differentiating the stream function 
E.
all the above. 