Top 150+ Solved Fluid Properties and Flow Characteristics MCQ Questions Answer
Q. For a perfect incompressible liquid, flowing in a continuous stream, the total energy of a particle remainsthe same, while the particle moves from one point to another. This statement is called
a. Continuity equation
b. Bernoulli's equation
c. Pascal's law
d. Archimedes’s principle
Q. Uniform flow occurs when
a. The direction and magnitude of the velocity at all points are identical
b. The velocity of successive fluid particles, at any point, is the same at successive periods of time
c. The magnitude and direction of the velocity do not change from point to point in the fluid
d. The fluid particles move in plane or parallel planes and the streamline patterns are identical in each pleasure
Q. At the center line of a pipe flowing under pressure where the velocity gradient is zero, the shearstress will be
a. Minimum
b. Maximum
c. Zero
d. Could be any value
Q. Piezometer is used to measure
a. Pressure in pipe, channels etc.
b. Atmospheric pressure
c. Very low pressures
d. Difference of pressure between two points
Q. The pressure in the air space above an oil (sp. gr. 0.8) surface in a tank is 0.1 kg/cm". Thepressure at 2.5 m below the oil surface will be
a. 2 metres of water column
b. 3 metres of water column
c. 3.5 metres of water column
d. 4 m of water column
Q. The flow which neglects changes in a transverse direction is known as
a. One dimensional flow
b. Uniform flow
c. Steady flow
d. Turbulent flow
Q. A moving fluid mass may be brought to a static equilibrium position, by applying an imaginary inertia force of the same magnitude as that of the accelerating force but in the opposite direction. This statement is called
a. Pascal's law
b. Archimedes’s principle
c. D-Alembert's principle
d. None of these
Q. The mass per unit volume of a liquid at a standard temperature and pressure is called
a. Specific weight
b. Mass density
c. Specific gravity
d. None of these
Q. The velocity of the liquid flowing through the divergent portion of a Venturimeter
a. Remains constant
b. Increases
c. Decreases
d. Depends upon mass of liquid
Q. The volumetric change of the fluid caused by a resistance is known as
a. Volumetric strain
b. Volumetric index
c. Compressibility
d. Adhesion
Q. Choose the wrong statement
a. Fluids are capable of flowing
b. Fluids conform to the shape of the containing vessels
c. When in equilibrium, fluids cannot sustain tangential forces
d. When in equilibrium, fluids can sustain shear forces
Q. An orifice is said to be large, if
a. The size of orifice is large
b. The velocity of flow is large
c. The available head of liquid is more than 5 times the height of orifice
d. The available head of liquid is less than 5 times the height of orifice
Q. A piece of metal of specific gravity 13.6 is placed in mercury of specific gravity 13.6, whatfraction of it volume is under mercury?
a. The metal piece will simply float over the mercury
b. The metal piece will be immersed in mercury by half
c. Whole of the metal piece will be immersed with its top surface just at mercury level
d. Metal piece will sink to the bottom
Q. Dynamic viscosity of most of the liquids with rise in temperature
a. Increases
b. Decreases
c. Remain unaffected
d. Unpredictable
Q. Select the correct statement
a. Local atmospheric pressure depends upon elevation of locality only
b. Standard atmospheric pressure is the mean local atmospheric pressure a* sea level
c. Local atmospheric pressure is always below standard atmospheric pressure
d. A barometer reads the difference between local and standard atmospheric pressure