In isentropic flow, the temperature
A.Cannot exceed the reservoir temperature
B.Cannot drop and then increase again downstream
C.Is independent of Mach number
D.Is a function of Mach number only
E.Remains constant in a duct flow
Category: Fluid Mechanics and Hydraulic Machines Mcqs
The thickness of turbulent boundary layer at a distance x from the leading edge over a flat plate varies as
A.x4/5
B.x5/4
C.x3/5
D.x5/3
E.x1/2
The normal stress is the same in all directions at a point in fluid
A.Regardless of the motion of one fluid layer relative to an adjacent layer
B.When there is no motion of one fluid layer relative to an adjacent layer
C.Only when the fluid is frictionless
D.Only when fluid is frictionless and incompressible
E.Only when the fluid has zero viscosity and is at rest
The maximum continuous power available from a hydro-electric plant under the most adverse hydraulic conditions is known as
A.Base power
B.Firm power
C.Primary power
D.Secondary power
E.Installed capacity
The velocity distribution for flow between two fixed parallel plates
A.Is constant over the cross-section
B.Varies parabolically across the section
C.Is zero at the plates and linearly increases towards the plates
D.Is zero in the middle and increases linearly towards the plates
E.None of the above
The gentre of gravity of the volume of liquid displaced by an immersed body is called __________________?
A.Wet C.G.
B.Metacentre
C.Centre of pressure
D.Wet centre
E.Centre of buoyancy
A pilot tube is used for the measurement of
A.Pressure
B.Velocity
C.Viscosity
D.Surface tension
E.Flow rate
Permissible velocity of water flowing through concrete tunnel is usually
A.4 – 5 m/s
B.10 – 12 m/s
C.12 – 12 m/s
D.20 m/s
E.25 m/s
Pascal’s law states that pressure at a point is equal in all directions
A.In a liquid at rest
B.In a fluid at rest
C.In a laminar flow
D.In a turbulent flow
Stanton diagram is a plot of
A.friction factor against Reynolds number
B.friction factor against log of Reynolds number
C.log of friction factor against Reynolds number
D.log of friction factor against log of Reynolds number
