Fluid Dynamics in Engineering MCQs with Answers

Which of the following is NOT a property of a fluid?
a) Viscosity
b) Compressibility
c) Incompressibility
d) Elasticity
Answer: d) Elasticity

What is the term for the resistance of a fluid to flow?
a) Viscosity
b) Surface tension
c) Density
d) Compressibility
Answer: a) Viscosity

What is the equation of continuity in fluid dynamics?
a) Bernoulli’s equation
b) Euler’s equation
c) Poisson’s equation
d) Continuity equation
Answer: d) Continuity equation

Which of the following is a type of fluid flow where the flow velocity and pressure remain constant along streamlines?
a) Laminar flow
b) Turbulent flow
c) Steady flow
d) Unsteady flow
Answer: c) Steady flow

What is the term for the force per unit area exerted by a fluid on its surroundings?
a) Pressure
b) Viscosity
c) Density
d) Surface tension
Answer: a) Pressure

Which of the following is a type of fluid flow where the flow velocity and pressure fluctuate randomly?
a) Laminar flow
b) Turbulent flow
c) Steady flow
d) Unsteady flow
Answer: b) Turbulent flow

What is the term for the measure of a fluid’s resistance to shear?
a) Viscosity
b) Surface tension
c) Density
d) Compressibility
Answer: a) Viscosity

What is the equation used to calculate the pressure at a point in a fluid at rest?
a) Pascal’s law
b) Bernoulli’s equation
c) Archimedes’ principle
d) Hydrostatic equation
Answer: d) Hydrostatic equation

Which of the following is a type of fluid flow where the flow velocity and pressure change with time?
a) Laminar flow
b) Turbulent flow
c) Steady flow
d) Unsteady flow
Answer: d) Unsteady flow

What is the term for the measure of a fluid’s mass per unit volume?
a) Viscosity
b) Surface tension
c) Density
d) Compressibility
Answer: c) Density

Which of the following is an example of a viscous fluid?
a) Water
b) Air
c) Mercury
d) Ethanol
Answer: c) Mercury

What is the term for the force per unit length exerted by a liquid surface?
a) Pressure
b) Viscosity
c) Density
d) Surface tension
Answer: d) Surface tension

Which of the following is NOT an application of fluid dynamics in engineering?
a) Design of aircraft wings
b) Flow measurement in pipes
c) Heat transfer in buildings
d) Structural analysis of bridges
Answer: d) Structural analysis of bridges

What is the term for the upward force exerted on an object submerged in a fluid?
a) Viscous force
b) Buoyant force
c) Gravitational force
d) Surface tension force
Answer: b) Buoyant force

Which of the following is NOT a characteristic of laminar flow?
a) Smooth and orderly flow patterns
b) Low resistance to flow
c) Streamlines that remain parallel
d) Formation of eddies and vortices
Answer: d) Formation of eddies and vortices

What is the term for the phenomenon where the pressure of a fluid decreases as its flow velocity increases?
a) Viscosity
b) Surface tension
c) Bernoulli’s principle
d) Pascal’s law
Answer: c) Bernoulli’s principle

Which of the following is a device used to measure fluid pressure?
a) Manometer
b) Thermocouple
c) Venturi meter
d) Tensiometer
Answer: a) Manometer

What is the term for the rate of change of velocity with respect to distance in a fluid flow?
a) Pressure gradient
b) Viscosity coefficient
c) Reynolds number
d) Shear rate
Answer: d) Shear rate

Which of the following is a dimensionless parameter used to predict flow patterns in fluid dynamics?
a) Pressure gradient
b) Viscosity coefficient
c) Reynolds number
d) Shear rate
Answer: c) Reynolds number

What is the term for the force per unit volume exerted by a fluid on a solid object immersed in it?
a) Pressure
b) Viscosity
c) Density
d) Surface tension
Answer: b) Viscosity

Which of the following is NOT a factor affecting the viscosity of a fluid?
a) Temperature
b) Pressure
c) Flow rate
d) Composition
Answer: b) Pressure

What is the term for the point in a fluid flow where the velocity is at its maximum and the pressure is at its minimum?
a) Stagnation point
b) Critical point
c) Separation point
d) Boundary layer
Answer: a) Stagnation point

Which of the following is a device used to measure fluid flow rate?
a) Manometer
b) Thermocouple
c) Venturi meter
d) Tensiometer
Answer: c) Venturi meter

What is the term for the flow of a fluid past a solid object at high Reynolds numbers, resulting in chaotic flow patterns?
a) Laminar flow
b) Turbulent flow
c) Steady flow
d) Unsteady flow
Answer: b) Turbulent flow

Which of the following is a property of an ideal fluid?
a) Viscosity
b) Compressibility
c) Incompressibility
d) Surface tension
Answer: c) Incompressibility

What is the term for the point where the flow of a fluid changes from laminar to turbulent?
a) Critical point
b) Separation point
c) Stagnation point
d) Transition point
Answer: d) Transition point

Which of the following is a technique used to study fluid flow patterns?
a) Thermography
b) Rheology
c) Particle image velocimetry
d) Infrared imaging
Answer: c) Particle image velocimetry

What is the term for the force per unit volume exerted by a fluid at rest?
a) Pressure
b) Viscosity
c) Density
d) Surface tension
Answer: a) Pressure

Which of the following is a property of an incompressible fluid?
a) Its density remains constant with changing pressure.
b) Its viscosity remains constant with changing temperature.
c) Its surface tension remains constant with changing flow rate.
d) Its compressibility remains constant with changing volume.
Answer: a) Its density remains constant with changing pressure.

What is the term for the force per unit volume exerted by a fluid on a solid surface perpendicular to the flow direction?
a) Pressure
b) Viscosity
c) Density
d) Surface tension
Answer: a) Pressure

Which of the following is a characteristic of a compressible fluid?
a) Its viscosity remains constant with changing temperature.
b) Its density remains constant with changing pressure.
c) Its surface tension remains constant with changing flow rate.
d) Its compressibility remains constant with changing volume.
Answer: d) Its compressibility remains constant with changing volume.

What is the term for the measure of a fluid’s ability to transmit heat?
a) Viscosity
b) Thermal conductivity
c) Density
d) Compressibility
Answer: b) Thermal conductivity

Which of the following is a dimensionless parameter used to analyze fluid flow in pipes?
a) Pressure gradient
b) Viscosity coefficient
c) Reynolds number
d) Shear rate
Answer: c) Reynolds number

What is the term for the force per unit length exerted by a fluid flow on a solid boundary?
a) Pressure
b) Viscosity
c) Shear stress
d) Surface tension
Answer: c) Shear stress

Which of the following is a technique used to simulate fluid flow behavior using computer algorithms?
a) Thermography
b) Computational fluid dynamics
c) Particle image velocimetry
d) Infrared imaging
Answer: b) Computational fluid dynamics

What is the term for the measure of the resistance of a fluid to flow between two parallel plates?
a) Viscosity
b) Surface tension
c) Density
d) Compressibility
Answer: a) Viscosity

Which of the following is a device used to measure fluid flow velocity?
a) Manometer
b) Thermocouple
c) Venturi meter
d) Pitot tube
Answer: d) Pitot tube

What is the term for the force per unit volume exerted by a fluid parallel to a solid surface?
a) Pressure
b) Viscosity
c) Density
d) Shear stress
Answer: d) Shear stress

Which of the following is a property of a Newtonian fluid?
a) Its viscosity remains constant with changing temperature.
b) Its density remains constant with changing pressure.
c) Its surface tension remains constant with changing flow rate.
d) Its compressibility remains constant with changing volume.
Answer: a) Its viscosity remains constant with changing temperature.

What is the term for the point in a fluid flow where the velocity is at its minimum and the pressure is at its maximum?
a) Stagnation point
b) Critical point
c) Separation point
d) Boundary layer
Answer: a) Stagnation point

Which of the following is NOT a factor affecting the surface tension of a liquid?
a) Temperature
b) Pressure
c) Composition
d) Nature of the liquid
Answer: b) Pressure

What is the term for the measure of the resistance of a fluid to flow in a pipe?
a) Viscosity
b) Surface tension
c) Friction factor
d) Compressibility
Answer: c) Friction factor

Which of the following is a technique used to measure the velocity profile of a fluid flow?
a) Thermography
b) Rheology
c) Particle image velocimetry
d) Infrared imaging
Answer: c) Particle image velocimetry

What is the term for the measure of a fluid’s ability to resist flow?
a) Viscosity
b) Surface tension
c) Density
d) Compressibility
Answer: a) Viscosity

Which of the following is NOT a characteristic of turbulent flow?
a) Chaotic and irregular flow patterns
b) High resistance to flow
c) Formation of eddies and vortices
d) Smooth and orderly flow patterns
Answer: d) Smooth and orderly flow patterns

What is the term for the pressure exerted by a fluid due to its motion?
a) Static pressure
b) Dynamic pressure
c) Total pressure
d) Stagnation pressure
Answer: b) Dynamic pressure

Which of the following is a device used to measure fluid flow rate based on the principle of differential pressure?
a) Manometer
b) Flowmeter
c) Venturi meter
d) Tensiometer
Answer: b) Flowmeter

What is the term for the measure of the resistance of a fluid to flow through a porous medium?
a) Viscosity
b) Permeability
c) Density
d) Compressibility
Answer: b) Permeability

Which of the following is a property of a non-Newtonian fluid?
a) Its viscosity remains constant with changing temperature.
b) Its density remains constant with changing pressure.
c) Its surface tension remains constant with changing flow rate.
d) Its compressibility remains constant with changing volume.
Answer: a) Its viscosity remains constant with changing temperature.

What is the term for the measure of the energy of a fluid flow per unit weight?
a) Pressure
b) Viscosity
c) Specific gravity
d) Bernoulli’s equation
Answer: d) Bernoulli’s equation

Which of the following is a characteristic of a laminar boundary layer?
a) Smooth and orderly flow patterns
b) Low resistance to flow
c) Formation of eddies and vortices
d) Chaotic and irregular flow patterns
Answer: a) Smooth and orderly flow patterns

What is the term for the measure of a fluid’s ability to resist shear deformation?
a) Viscosity
b) Surface tension
c) Density
d) Compressibility
Answer: a) Viscosity

Which of the following is a device used to measure fluid flow velocity based on the principle of pressure difference?
a) Manometer
b) Flowmeter
c) Venturi meter
d) Pitot tube
Answer: d) Pitot tube

What is the term for the measure of the average kinetic energy of the molecules in a fluid?
a) Pressure
b) Viscosity
c) Temperature
d) Surface tension
Answer: c) Temperature

Which of the following is a technique used to measure the flow rate of a fluid in a pipe?
a) Thermography
b) Rheology
c) Ultrasonic flow measurement
d) Infrared imaging
Answer: c) Ultrasonic flow measurement

What is the term for the measure of the resistance of a fluid to flow under the influence of gravity?
a) Viscosity
b) Surface tension
c) Density
d) Viscous force
Answer: d) Viscous force

Which of the following is a property of an inviscid fluid?
a) Its viscosity remains constant with changing temperature.
b) Its density remains constant with changing pressure.
c) Its surface tension remains constant with changing flow rate.
d) It has zero viscosity.
Answer: d) It has zero viscosity.

What is the term for the measure of the resistance of a fluid to flow through a pipe?
a) Viscosity
b) Surface tension
c) Friction factor
d) Compressibility
Answer: c) Friction factor

Which of the following is a technique used to visualize fluid flow patterns using temperature-sensitive dyes?
a) Thermography
b) Rheology
c) Particle image velocimetry
d) Thermochromic imaging
Answer: d) Thermochromic imaging

What is the term for the measure of the average distance between fluid molecules in a unit volume of a fluid?
a) Pressure
b) Viscosity
c) Density
d) Surface tension
Answer: c) Density

Which of the following is a device used to measure fluid pressure based on the principle of fluid displacement?
a) Manometer
b) Flowmeter
c) Bourdon gauge
d) Tensiometer
Answer: c) Bourdon gauge

What is the term for the measure of the resistance of a fluid to flow in a circular pipe?
a) Viscosity
b) Surface tension
c) Friction factor
d) Permeability
Answer: c) Friction factor

Which of the following is a technique used to measure fluid flow patterns using the motion of particles in the flow?
a) Thermography
b) Rheology
c) Particle image velocimetry
d) Infrared imaging
Answer: c) Particle image velocimetry

What is the term for the measure of the resistance of a fluid to flow through a pipe?
a) Viscosity
b) Surface tension
c) Friction factor
d) Compressibility
Answer: c) Friction factor

Which of the following is a property of a dilatant fluid?
a) Its viscosity remains constant with changing temperature.
b) Its density remains constant with changing pressure.
c) Its surface tension remains constant with changing flow rate.
d) Its viscosity increases with increasing shear rate.
Answer: d) Its viscosity increases with increasing shear rate.

What is the term for the measure of the resistance of a fluid to flow through a porous medium?
a) Viscosity
b) Permeability
c) Density
d) Compressibility
Answer: b) Permeability

Which of the following is a technique used to measure fluid flow velocity based on the principle of fluid displacement?
a) Manometer
b) Flowmeter
c) Venturi meter
d) Pitot tube
Answer: b) Flowmeter

What is the term for the measure of the resistance of a fluid to flow in a pipe?
a) Viscosity
b) Surface tension
c) Friction factor
d) Compressibility
Answer: c) Friction factor

Which of the following is a technique used to visualize fluid flow patterns using temperature-sensitive liquid crystals?
a) Thermography
b) Rheology
c) Particle image velocimetry
d) Liquid crystal thermography
Answer: d) Liquid crystal thermography

What is the term for the measure of the average kinetic energy of the molecules in a fluid?
a) Pressure
b) Viscosity
c) Temperature
d) Surface tension
Answer: c) Temperature

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