FLUID MECHANICS | STUDY GUIDE & PRACTICE QUESTIONS | 2026
An electron will not be ejected If the energy of the incident photon is less than the work function:
Increases For supersonic flow, the pressure of fluid must decrease as the fluid flow area of the
duct.
Dynamic viscosity / kinematic viscosity Density in term of viscosity is:
Shape Liquids and gases take the following characteristic(s) of their contents.
C. A and B above are correct Alcohol finds use in manometers as:
A. It provides a suitable meniscus for the inclined tube
B. Its density being less can provide longer length for a pressure difference, thus
more accuracy can be obtained
C. A and B above are correct
D. Cheap and easily available
D. Shear stress is proportional to rate of strain Which of the following statements about a Newtonian fluid is most accurate?
A. Shear stress is proportional to strain
B. Viscosity is zero
C. Shear stress is multi - valued
D. Shear stress is proportional to rate of strain
When there is no motion of one fluid layer relative to an The normal stress is the same in all directions at a point in fluid:
adjacent layer
C. It is a shear stress Which of the following is not a characteristic of fluid pressure?
A. It is the same in all directions at a point in the fluid
B. Its acts normal to a surface
C. It is a shear stress
D. It is linear with depth
First slowly and then steeply The length of mercury column at a place at an altitude will change with respect to
that at ground in:
D. Biot number All of the following dimensionless parameters are applicable to fluid flow problems
except the _______.
A. Reynolds number
B. Froude number
C. Mach number
D. Biot number
D. all of the above Mass density of liquid (ρ) is given by which of the following?
A. Ρ = Mass / volume
B. Ρ = metric slug / 𝑚2
C. Ρ = kg 𝑠𝑒𝑐2 / 𝑚4
D. all of the above
D. Thermal conductivity the speed of sound in all fluid is most closely related to all of the following properties
except________.
A. Compressibility
B. Density
C. Bulk module
D. Thermal conductivity
, FLUID MECHANICS | STUDY GUIDE & PRACTICE QUESTIONS | 2026
D. All of the above Under which condition, the specific weight of water is 1000 kg/𝑚3?
A. At normal pressure of 760 mm
B. At 4 ̊C temperature
C. At mean sea level
D. All of the above
D. hysteresis All of the following can be characteristics of fluids except_________.
A. kinematic viscosity
B. surface tension
C. bulk modulus
D. hysteresis
D. Pilot tube Which of the following can be used to measure the flow of water in a pipe of
diameter 3000 mm?
A. Venturimeter
B. Rotameter
C. Nozzle
D. Pilot tube
The sum of the individual pressures The pressure at a given depth due to several immiscible liquids is:
D. All of the above conditions are together The equation of continuity of flow is applicable if:
A. The flow is one dimensional
B. The flow is steady
C. The velocity is uniform over the cross - section
D. All of the above conditions are together
C. At every point the velocity vector is identical in Uniform flow takes place when:
magnitude and direction for any given instant A. Conditions remain unchanged with time at any point
B. Rate of change of velocity of fluid is zero
C. At every point the velocity vector is identical in magnitude and direction for any
given instant
D. The change in transverse direction is zero
States that energy is constant everywhere in the fluid The continuity equation of an ideal fluid flow.
Kinetic energy and static pressure A pilot tube can be used to measure fluid velocity as described by the Bernoulli's
equation and the relationship between:
6.4 m above the hydraulic gradient In order to avoid vaporization in the pipe line, the pipe line over the ridge is laid in
such a way that it is not more than:
The conservation of mass The stream function is a useful parameter in describing_____________.
C. Negligible For high speed flows, the potential energy of fluids are:
A. Positive
B. Negative
C. Negligible
D. None of these
Boyle's law McLeod gauge used for low pressure measurement operates on the principle of
_________.
An electron will not be ejected If the energy of the incident photon is less than the work function:
Increases For supersonic flow, the pressure of fluid must decrease as the fluid flow area of the
duct.
Dynamic viscosity / kinematic viscosity Density in term of viscosity is:
Shape Liquids and gases take the following characteristic(s) of their contents.
C. A and B above are correct Alcohol finds use in manometers as:
A. It provides a suitable meniscus for the inclined tube
B. Its density being less can provide longer length for a pressure difference, thus
more accuracy can be obtained
C. A and B above are correct
D. Cheap and easily available
D. Shear stress is proportional to rate of strain Which of the following statements about a Newtonian fluid is most accurate?
A. Shear stress is proportional to strain
B. Viscosity is zero
C. Shear stress is multi - valued
D. Shear stress is proportional to rate of strain
When there is no motion of one fluid layer relative to an The normal stress is the same in all directions at a point in fluid:
adjacent layer
C. It is a shear stress Which of the following is not a characteristic of fluid pressure?
A. It is the same in all directions at a point in the fluid
B. Its acts normal to a surface
C. It is a shear stress
D. It is linear with depth
First slowly and then steeply The length of mercury column at a place at an altitude will change with respect to
that at ground in:
D. Biot number All of the following dimensionless parameters are applicable to fluid flow problems
except the _______.
A. Reynolds number
B. Froude number
C. Mach number
D. Biot number
D. all of the above Mass density of liquid (ρ) is given by which of the following?
A. Ρ = Mass / volume
B. Ρ = metric slug / 𝑚2
C. Ρ = kg 𝑠𝑒𝑐2 / 𝑚4
D. all of the above
D. Thermal conductivity the speed of sound in all fluid is most closely related to all of the following properties
except________.
A. Compressibility
B. Density
C. Bulk module
D. Thermal conductivity
, FLUID MECHANICS | STUDY GUIDE & PRACTICE QUESTIONS | 2026
D. All of the above Under which condition, the specific weight of water is 1000 kg/𝑚3?
A. At normal pressure of 760 mm
B. At 4 ̊C temperature
C. At mean sea level
D. All of the above
D. hysteresis All of the following can be characteristics of fluids except_________.
A. kinematic viscosity
B. surface tension
C. bulk modulus
D. hysteresis
D. Pilot tube Which of the following can be used to measure the flow of water in a pipe of
diameter 3000 mm?
A. Venturimeter
B. Rotameter
C. Nozzle
D. Pilot tube
The sum of the individual pressures The pressure at a given depth due to several immiscible liquids is:
D. All of the above conditions are together The equation of continuity of flow is applicable if:
A. The flow is one dimensional
B. The flow is steady
C. The velocity is uniform over the cross - section
D. All of the above conditions are together
C. At every point the velocity vector is identical in Uniform flow takes place when:
magnitude and direction for any given instant A. Conditions remain unchanged with time at any point
B. Rate of change of velocity of fluid is zero
C. At every point the velocity vector is identical in magnitude and direction for any
given instant
D. The change in transverse direction is zero
States that energy is constant everywhere in the fluid The continuity equation of an ideal fluid flow.
Kinetic energy and static pressure A pilot tube can be used to measure fluid velocity as described by the Bernoulli's
equation and the relationship between:
6.4 m above the hydraulic gradient In order to avoid vaporization in the pipe line, the pipe line over the ridge is laid in
such a way that it is not more than:
The conservation of mass The stream function is a useful parameter in describing_____________.
C. Negligible For high speed flows, the potential energy of fluids are:
A. Positive
B. Negative
C. Negligible
D. None of these
Boyle's law McLeod gauge used for low pressure measurement operates on the principle of
_________.
