Increasing the acceleration head
Making the friction in pipe uniform
Decreasing the acceleration head
None of these
✅ The correct answer is option B.
Fluid Mechanics MCQs
The ratio of average fluid velocity to the maximum velocity in case of laminar flow of a Newtonion fluid in a circular pipe is
0.5
1
2
0.66
✅ The correct answer is option A.
In the complete turbulence zone (in rough pipes), the
Rough and smooth pipes have the same friction factor
Laminar film covers the roughness projections
Friction factor depends upon NRe only
Friction factor is independent of the relative roughness
✅ The correct answer is option D.
The ratio of inertial forces to elastic forces is called the __________ number.
Reynolds
Mach
Euler
Weber
✅ The correct answer is option B.
Hot wire anemometer is used to measure the
Velocity of liquids
Temperature of liquids
Velocity of gases
Pressure of liquids
✅ The correct answer is option C.
A Newtonion fluid is that
Which follows Newton
Which needs a minimum shear, before it starts deforming
For which shear & deformation are related as T = μ ∂u/∂y
None of these
✅ The correct answer is option C.
The unit of bulk modulus of elasticity for a liquid in S.I. unit is
N
N/m
N/m²
N/m³
✅ The correct answer is option C.
Identification of pipelines carrying different liquids and gases is done by the __________ of the pipe.
Diameter
Colour
Altitude
None of these
✅ The correct answer is option B.
Hydraulic __________ works on the principle of Pascal’s law of transmission of fluid pressure.
Press
Turbine
Pump
Coupling
✅ The correct answer is option A.
The bulk modulus of elasticity of a liquid
Is zero for incompressible liquid
Decreases with pressure
Is independent of temperature & pressure
Increases with pressure
✅ The correct answer is option D.