A barometer is used to measure
A.Very low pressures
B.Very high pressures
C.Pressure differeuce between two points
D.Pressure of fluid in a pipe line
E.Atmospheric pressure
Category: Fluid Mechanics and Hydraulic Machines Mcqs
Select a common dimensionless parameter in fluid mechanics from the following:
A.Angular velocity
B.Kinematic viscosity
C.Specific gravity
D.Specific weight
E.None of the these answers
A hydraulic intensifier is a device
A.To lift small quantities of water through large head by means of large quantity of water falling through small height
B.To generate high pressure
C.To increase the intensity of pressure of water by means of the energy of a large quantity of water at low pressure
D.To temporarily store the energy of water
E.None of the above
The magnitude of earthquake pressure on a dam varies as a function of
A.Frequency of vibration
B.Amplitude
C.Frequency of vibration and amplitude
D.Amplitude and intensity
E.Richard’s scale number
The most efficient cross-section for a channel is
A.Semi-circular
B.Square
C.Rectangular
D.Triangular
E.Half hexagon in the form of a trapezoid
Formation of air pockets in pressure tunnel may be avoided by
A.Avoiding partial gate opening
B.Avoiding traps or pockets along the crown
C.Avoiding vortices formation
D.Avoiding small intakes
E.Any of the above
Cavitation is caused by
A.High velocity
B.Low barometric pressure
C.High pressure
D.Low pressure
E.Low velocity
The dynamic viscosity of most of the gases with rise in gas temperature
A.Increases
B.Increases as ?T
C.Increses inversely as ?T
D.Decreases
E.Does not change significantly
The equation of continuity of flow is applicable when
A.The flow is one dimensional
B.The flow is steady
C.The flow is compressive
D.The velocity is uniform over the cross section
E.None of the above
In the theory of lubrication the assumption is made that
A.The velocity distribution is the same at all cross-sections
B.The velocity distribution at any section is the same as if the plates were parallel
C.The pressure variation along the bearing is the same as if the plates were parallel
D.The velocity varies linearly between the two surfaces
E.The velocity varies linearly between the two surfaces
