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This quiz contains multiple-choice problems on Euler’s and Bernoulli’s equations of motion, Bernoulli applications, Newton’s first and second laws of motion, Navier-Stokes equation, impulse and moment of momentum equations.
Which of the following is NOT a type of force considered in the Navier-Stokes equation?
Gravity force
Pressure force
Surface tension force
Viscous force
Which of the following equations is a result of momentum conservation for inviscid steady flows?
Bernoulli’s equation
Navier-Stokes equation
First law of thermodynamics
Euler’s equation
The Bernoulli’s equation in fluid dynamics is valid for
Compressible flows
Transient flows
Continuous flows
Viscous flows
Water flows through a pipe at a velocity of 2 m/s. The pressure gauge reading is 2 bar. The datum head is given to be 2 m. Find the piezometric head. (assume all Bernoulli’s assumptions, density of water = 1000 kg/m^3, g = 9.8 m/s^2).
22.4 m
22.6 m
20.4 m
20.6 m
A student wishes to find the velocity of air flowing through a pipe. He has a pressure gauge that displays only the dynamic pressure, and the pressure gauge reads 0.018 mm Hg. Assuming the density of air to be 1.225 kg/m^3, find the velocity V of air (ρ{Hg} = 13600 kg/m^3).
4 m/s
2 m/s
20 m/s
40 m/s
If compressibility force and surface tension force are neglected from the Newton’s second law of motion, which of the following equations result?
Navier-Stokes equation
Euler’s equation
Bernoulli’s equation
Reynolds equation
What does a pitot tube measure? What is its working principle?
Pressure; Bernoulli’s principle
Velocity; Bernoulli’s principle
Pressure; Euler’s equation
Velocity; Euler’s equation
The best place to place a pitot tube on an aircraft for velocity measurement is behind the jet engine. True or false?
True
False
A point in a fluid flow where the flow has come to rest is called
Pressure point
Initial point
Flow point
Stagnation point
When a fluid is subjected to resistance, it undergoes a volumetric change due to
Strain
Cohesion
Adhesion
Compressibility
What is the formula to find the kinematic viscosity of a fluid?
(Dynamic viscosity) * Temperature
(Dynamic viscosity)/Density
1/(Dynamic viscosity)
Density/(Dynamic viscosity)
A one-dimensional flow is also called
A steady flow
A flow which involves zero transverse component
Uniform flow
Zig-zag flow
What is the resultant upward pressure of a fluid on an immersed body called?
Buoyancy
Metacentre
Upthrust
Reaction pressure
Which of the following quantities represents a liquid of mass 1000kg occupying a volume of one cubic meter?
Specific density
Specific weight
Specific gravity
Specific mass
When is a fluid said to be ideal?
Non-viscous and incompressible
Viscous and compressible
Viscous and Incompressible
Incompressible
