Category: Fluid Mechanics and Hydraulic Machines Mcqs

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

A.Only part of the available head is converted into velocity before the water enters the wheel
B.Water admitted over part of the circumference
C.It is necessary that wheel should always run full
D.It is possible to regulate the flow
E.Depends upon other factors

A.is always the path of a particle
B.is a line drawn in the flow region such that the tangent drawn at any point on the line indicates the direction of velocity
C.is a line drawn in the flow region such that there is mass flow across the line
D.is not fixed in steady flow

A.Velocity of fluid in pipes
B.Velocity of gauges
C.Vortex flow
D.Flow of fluids
E.Density of fluids