Category: Fluid Mechanics and Hydraulic Machines Mcqs

A.Same as units of force
B.Energy/unit area
C.Force/unit area
D.It is dimensionless
E.None of the above

A.Pelton wheel, horizontal
B.Pelton wheel, vertical
C.Francis turbine, horizontal
D.Francis turbine, vertical
E.Kaplan turbine

A.Pressure gradient is zero
B.Pressure gradient is positive
C.Pressure gradient is negative
D.None of the above

A.7.5 m
B.8.5 m
C.9.81 m
D.10.30 m

A.Velocity of jet before impact – velocity after impact
B.Difference in velocities of jet in the direction normal to plate
C.Mass of water x (difference in velocities of jet)
D.Mass of striking water x (velocity before impact in the direction normal to plate-velocity fter impact in the direction normal to plate).
E.None of the above

A.Steel on concrete
B.Steel on steel
C.Steel on steel, greased plates
D.Packing and liner
E.Steel on steel with two layers of graphite service in between

A.cohesion only
B.difference in magnitude between the forces due to adhesion and cohesion
C.adhesion between liquid and solid molecules
D.frictional forces

A.Increased discharge
B.Increased head loss
C.Water hammer
D.Bulking of flow
E.Any or all of the above

A.Protection against effect of temperature because of soil cover
B.Protection against freezing of conveyed water
C.Protection against earthquake shock
D.Immunity against rock sides, avalanches and falling tree
E.Difficulty in repair and maintenance

A.Varies inversely with diameter
B.Varies conversely with diameter
C.Varies conversely as square of velocity
D.Varies directly as velocity
E.Varies approximately as square of velocity