The velocity of a fluid particle at the centre of the pipe section is
A.Maximum
B.Minimum
C.Average
D.r.m.s.
E.Logarithmic average.
Category: Fluid Mechanics and Hydraulic Machines Mcqs
Specific speed (fps) = k x specific speed (metric where value of k is (for turbines)
A.1
B.2
C.4.45
D.8.91
E.9.81
In a centrifugal pump casing, the flow of water leaving the impeller is
A.Rectilinear flow
B.Centrifugal flow
C.Radial flow
D.Forced vortex motion
E.Free vortex motion
The hydraulic gradient line
A.Is always below the total energy line
B.Is always parallel to the bottom
C.Is same as central line of section
D.Is always above the total energy line
E.Is always below the total energy line
If a water tank partially filled with water is being carried on a truck with a constant horizontal acceleration, the level of liquid will
A.Rise on the front side of the tank
B.Fall on the front side of the tank
C.Rise on the back side of the tank and fall on front
D.Fall on the back side of the tank and rise on front
E.Front side fluctuate considerably
1 Kilo-Pascal is the same as
A.1000 n/mm2
B.1000 N/cm
C.1000 N/cm2
D.1000 N/m2
E.
The simplest type of controls for reservoir outlets is provided by
A.Slide gates
B.Height pressure gates
C.Radial gates
D.Jet flow gates
E.Cylindrical gates
Pascal-second is the unit of
A.pressure
B.surface
C.kinematic viscosity
D.dynamic viscosity
In laminar flow
A.Experimentation is required for the sirmplest flow cases
B.Newton’s law of viscosity applies
C.The fluid particles move in irregular and haphazard paths
D.The viscosity is unimportant
In reaction turbine the draft tube is used
A.To transport water to downstream without eddies
B.To reconvert kinetic energy to flow energy by a gradual expansion of the flow cross-section
C.To increase the effective head
D.To prevent air from entering
E.To run the turbine full
