Hydraulics and Fluid Machines - Hydraulics and Fluid Machines objective type questions and answers
36. Which of the following is dimensionless.......
A.Specific weight
B.Specific volume
C.Specific speed
D.Specific gravity
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D.Specific gravity
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37. The normal stress in a fluid will be constant in all directions at a point only if .......
A.It is compressible
B.It has uniform viscosity
C.It has zero viscosity
D.It is frictionless
E.It is at rest
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38. Surface tension has the units of .........
A.Newton/metre2
B.New tons/m
C.Newtons
D.Newton m
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39. Surface tension ......
A.Acts in the plane of the interface normal to any line in the surface
B.Is also known as capillarity
C.Is a function of the curvature of the interface
D.Decreases with fall in temperature
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40. Viscosity of water in comparison to mercury is .......
A.Higher
B.Lower
C.Same
D.Higher/lower depending on temperature
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