Falling drops of water become spherical due to
A.Adhesion
B.Cohesion
C.Dynamic viscosity
D.Kinematic viscosity
E.Surface tension
Category: Fluid Mechanics and Hydraulic Machines Mcqs
Hydraulic jump is used for
A.Increasing the flow rate
B.Reducing the flow rate
C.Reducing the velocity of flow
D.Reducing the energy of flow
E.Reducing turbulence
A mercury water manometer indicates a gauge difference of 400 mm. The difference in pressure, measured in metres of water, is
A.0.4
B.0.8
C.1088
D.5.44
E.None of the above
A practical example of steady non-uniform flow is given as the
A.Motion of a river around the pillars of a bridge
B.Flow through venturimeter
C.Flow through delivery pipe of a reciprocating pump
D.Steadily decreasing flow through a reducing section
E.Constant discharge through straight tapering draft tube turbine
Which one of the following is laminar flow
A.Rise of water in plants through roots
B.Movement of blood in the arteries of a human body
C.Flow of oil in measuring instruments
D.All of the above
E.None of the above
The flow of water in a pipe of diameter 3000 mm can be measured by
A.Venturimeter
B.Rotameter
C.Nozzle
D.Pitot tube
E.Orifice plate
The terminal velocity of a small sphere setting in a viscous fluid varies as the
A.Inverse of the diameter
B.Inverse square of the diameter
C.Fluid viscosity
D.Inverse of the fluid viscosity
E.None of the above
Specific speed for reaction turbine ranges from
A.3 – 710
B.10 – 110
C.125 – 180
D.200 – 300
E.More than 300
One poise is equivalent to
A.360 kg/m-hr
B.1 dyne sec/cm2
C.1/98.1 kgf sec/m2
D.10-1 kg/m-sec
E.Any of the above
A hot wire anemometer is used for the measurement of
A.Pressure of gases
B.Velocity of gases
C.Viscosity of gases
D.Viscosity of liquids
E.Density of liquids
