Top 550+ Solved Fluid Mechanics and Hydraulic Machines MCQ Questions Answer
Q. The flow in a river during the period of heavy rainfall is
a. Steady, non-uniform and three-dimensional
b. Steady, uniform, two-dimensional
c. Unsteady, uniform, three-dimensional
d. Unsteady, non-uniform and three-dimensional.
Q. Flow between parallel plates of infinite extent is an example of
a. One-dimensional flow
b. Two-dimensional flow
c. Three-dimensional flow
d. Compressible flow.
Q. If the flow is irrational as well as steady it is known as
a. Non-uniform flow
b. One-dimensional flow
c. Potential flow
d. None of the above.
Q. The falling drops of rain acquire spherical shape on account of
a. Surface tension
b. Buoyancy
c. Compressibility
d. Viscosity
e. Vapour pressure
Q. A foot valve is provided on
a. Centrifugal pumps
b. Kaplan turbines
c. Pelton wheels
d. High pressure devices
e. All of the above
Q. If the specific speed of a pump is calculated as 5000, the type of pump that should be selected is
a. Axial flow or propeller pump
b. Mixed flow or screw pump
c. Slow speed radial flow
d. Medium speed radial flow
e. High speed radial flow
Q. Newton's law of viscosity relates
a. Shear stress, temperature, viscosity and velocity
b. Pressure, vicosity and rate of angular deformation
c. Yield shear stress, rate of angular deformation and viscosity
d. Pressure, velocity and viscosity
e. Shear stress and rate of angular deformation in a fluid
Q. The length of mercury column at a place at an altitude will vary with respect to that at ground in a
a. Parabolic relation
b. First slowly and then steeply
c. Hyperbolic relation
d. Will remain constant
e. Linear relation
Q. Which of the following forces does not act in case of fluids?
a. Gravity force
b. Elastic force
c. Vibratory force
d. Centrifugal force
e. Tensile force
Q. A stream line
a. Is the line along the geometrical centre of the flow
b. Is the line of equal velocity in a flow
c. Occurs in all types of flow
d. Is the line along which the rate of pressure drop is uniform
e. Is fixed in space in steady flow
Q. A surge wave is an example of
a. 10
b. steady uniform flow
c. unsteady non-uniform flow
d. steady non-uniform flow
e. unsteady uniform flow
Q. Atmospheric pressure held in terms of water column is
a. 7.5 m
b. 8.5 m
c. 9.81 m
d. 10.30 m
e. None of the above
Q. The arch dam is not suitable for
a. Low heads
b. Small discharge
c. Wider sites
d. Narrow sites
e. Small discharge and low heads