Top 150+ Solved Fluid Properties and Flow Characteristics MCQ Questions Answer
Q. Choose the correct relationship
a. Specific gravity = gravity × density
b. Dynamic viscosity = kinematic viscosity × density
c. Gravity = specific gravity × density
d. Kinematic viscosity = dynamic viscosity × density
Q. The viscosity of water is __________ than that of mercury.
a. Higher
b. Lower
c. Same as
d. None of these
Q. Surface energy per unit area of a surface is numerically equal to
a. Atmospheric pressure
b. Surface tension
c. Force of adhesion
d. Force of cohesion
Q. Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area dueto the
a. Force of adhesion
b. Force of cohesion
c. Force of friction
d. Force of diffusion
Q. Which of the following statement is correct?
a. In a compressible flow, the volume of the flowing liquid changes during the flow
b. A flow, in which the volume of the flowing liquid does not change, is called incompressible flow
c. When the particles rotate about their own axes while flowing, the flow is said to be rotational flow
d. All of the above
Q. Choose the wrong statement
a. Viscosity of a fluid is that property which determines the amount of its resistance to a shearing force
b. Viscosity is due primarily to interaction between fluid molecules
c. Viscosity of liquids decreases with increase in temperature
d. Viscosity of liquids is appreciably affected by change in pressure
Q. A perfect gas
a. Has constant viscosity
b. Has zero viscosity
c. Is in compressible
d. None of the above
Q. In a static fluid
a. Resistance to shear stress is small
b. Fluid pressure is zero
c. Linear deformation is small
d. Only normal stresses can exist
Q. The maximum discharge over a broad crested weir is
a. 0.384 Cd × L × H1/2
b. 0.384 Cd × L × H3/2
c. 1.71 Cd × L × H1/2
d. 1.71 Cd × L × H3/2
Q. The ratio of absolute viscosity to mass density is known as
a. Specific viscosity
b. Viscosity index
c. Kinematic viscosity
d. Coefficient of viscosity
Q. Hot wire anemometer is used to measure
a. Pressure in gases
b. Liquid discharge
c. Pressure in liquids
d. Gas velocities
Q. Venturimeter is used to
a. Measure the velocity of a flowing liquid
b. Measure the pressure of a flowing liquid
c. Measure the discharge of liquid flowing in a pipe
d. Measure the pressure difference of liquid flowing between two points in a pipe line
Q. The pressure measured with the help of a pressure gauge is called
a. Atmospheric pressure
b. Gauge pressure
c. Absolute pressure
d. Mean pressure