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
Category: Fluid Mechanics and Hydraulic Machines Mcqs
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
If a centrifugal pump takes too much power, the cause may be
A.Low speed
B.Air in water
C.Air leakage
D.Foot valve too small
E.Heavy liquid.
The Reyonlds number may be defined as the ratio of
A.Viscous forces to inertial forces
B.Elastic forces to pressure forces
C.Viscous forces to gravity forces
D.Gravity forces to inertial forces
E.None of the above
The hydrostatic law states that rate of increase of pressure in a vertical direction is equal to
A.Density of the fluid
B.Specific weight of the fluid
C.Weight of the fluid
D.None of the above
