Computational Fluid Dynamics MCQs
Computational Fluid Dynamics MCQs
Answer these 100+ Computational Fluid Dynamics MCQs and assess your grip on the subject of Computational Fluid Dynamics.
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1: What is the name of the science that describes the motion of a fluid?
A. Physics
B. Fluid Dynamics
C. Chemistry
2: What is another term for Computational Fluid Dynamics?
A. CFD analysis
B. CFD
C. CFD software
D. CFD simulation
3: What is used to describe the air motion around a vehicle?
A. CFD
B. Winds
C. Vectors
D. Wind
E. Gas
4: In a parking lot, what is the problem that CFD is used to solve?
A. Smoke dispersion
B. Low wind speeds
C. Compact formation
D. High winds
E. Highway congestion
5: What does CFD stand for?
A. Computational Fluid Dynamics
B. Chaos Fractals
C. A computer program used to predict weather patterns
D. A type of restaurant
E. Computer-Aided Design
6: What is an example of a fluid?
A. Gas orsolid
B. Solid or liquid
C. Solid
D. Plasma
E. Gas or liquid
7: What kind of field can be benefited from the use of CFD?
A. Wide
B. Narrow
C. Chemical
8: What is an example of a field in which CFD is used?
A. To predict the weather
B. To describe the air motion around a vehicle
C. To study the flow of water in canals
D. To study the flow of gas through porous materials
E. To predict the behavior of molecules in a gas
9: What does CFD describe in a given condition?
A. The behaviour of a given system
B. The behaviour of a given price
C. The behaviour of a given fluid
10: What is stored in every cell of the computational grid?
A. A list of all pairs of values for each quantity
B. A list of all possible values for each quantity
C. One single value for each quantity
11: How many values are stored in a cell?
A. One
B. Two
C. Three
12: What's the basic element of the Computational Grid?
A. Processor
B. Cell
C. Logic
D. Data
E. Memory
13: What is stored in every cell?
A. One single value for each quantity
B. A list of all the quantities and their corresponding values
C. One number for each combination of quantity
D. Several different quantities, depending on the cell's content
E. One quantity for each cell
14: What are flows involving liquid but also air called?
A. Mixed flows
B. Incompressible flows
C. Controlled flows
D. Incompressible and rarefied flows
E. Incompressible and compressible flows
15: What are the Incompressible flows?
A. Gas absorption
B. Those involving only gas
C. Fluid turbulence
D. Those involving liquid but also air
E. Those involving gas but also liquid
16: What is the term for the flow that has been going long enough?
A. Constant
B. Steady
C. Flowing
D. Natural
E. Volatile
17: What is the name of the type of flow that changes the values of the water inside the pipe?
A. Unsteady
B. Flowing
C. Viscous
D. Steady
18: What is the name of the analysis that is said to be Steady?
A. Moving Average Analysis
B. Steady State
C. Unsteady Analysis
D. Time-series Analysis
E. Steady/Unsteady Analysis
19: When the flow starts the values of what change from their initial value to the final values?
A. Pressure
B. Temperature
C. Water velocity
D. Air pressure
20: What do we call a change in the value of water velocity that takes place when the water enters a pipeline?
A. Spike
B. Steady
C. Change
D. Varying
E. Surge
21: When the flow starts the values of water velocity inside the pipe change from what value to the final values?
A. Initial value
B. Steady state value
C. Flow velocity changes continuously
D. Final value
22: What is a type of value that boundary conditions assume?
A. Elasticity
B. Momentum
C. Energy
D. Stress
E. Velocity
23: Which type of variable is specified with a boundary condition?
A. Domain Boundary
B. Range boundary
C. Function Boundary
24: The boundary condition values are also known as?
A. Transition Region
B. Concentration Limits
C. Domain Limits
D. Domain Conditions
E. Domain Boundaries
25: When the water enters the pipe, a another boundary condition is the value of?
A. Flow rate
B. Velocity
C. Temperature
D. Pressure
26: What is the term used to describe the values that quantities like velocity, pressure, temperature assumes on the Domain Limits?
A. Data Point
B. Value
C. Boundary Condition
D. Reference Point
27: What are the Fluid Dynamics equations often solved by?
A. PDEs
B. Numerical methods
C. The Navier-Stokes equations
D. Partial differential equations
28: What is it called when one stops the iterative method to reach the correct solution?
A. Collapse
B. Solution
C. Convergence
D. Convergence to a fixed point
E. Error
29: What is the phase where the user looks at the analysis data?
A. Postprocessing and Analysis
B. Preparation
C. Postprocessing
D. Preprocessing
30: What are typically used to help the user in this task?
A. Post processing tools
B. Web browsers
C. Graphics tools
D. External storage
E. An interpreter
31: What is one way to visualize the results of a CFD analysis?
A. Histogram
B. Bubble Chart
C. Pie Chart
D. Contour Plot
E. Venn diagram
32: How many dimensions does a Contour Plot typically have?
A. Four
B. Two
C. Three
33: What is the name of another post processing tool?
A. Streamline Plot
B. HSL
C. Photoshop
D. GIMP
34: What is the purpose of the Streamline Plot?
A. To show the trajectory that a very large particle would trace if immersed in the flow
B. To show the trajectory of a water droplet
C. To show the trajectory that a very small particle would trace if immersed in the flow
D. To determine the effects of flow on the center of mass of particles
E. To show the trajectory of a missile
35: Fluid is a substance that ____.
A. Intermittently deforms
B. Resists deformation
C. Continuously deforms
D. Can’t resist shear force applied on them
E. Both 3 and 4
36: Which of the following substances don’t have free surfaces?
A. Solid
B. Liquid
C. Gases
D. Both 1 &2
37: What do you think about a Compressible fluid?
A. It has fixed density
B. It has variable density
C. Can’t say
38: What do you think about an Incompressible fluid?
A. It has fixed density
B. It has variable density
C. Can’t say
39: By which of the following you can measure the compressibility characteristics of a fluid?
A. Reynolds number
B. Grashoff number
C. Mach number
D. None of these
40: Which one of the following will you treat as ideal liquid?
A. Air
B. Water
C. Oil
D. None of these
41: Which one of the following will you treat as an ideal gas?
A. Air
B. Water
C. Oil
D. None of these
42: What do you think about an ideal fluid ____?
A. Compressible
B. Incompressible
C. Can’t say
43: A real fluid is considered as ____.
A. Compressible
B. Incompressible
C. Cant’t say
44: Which of the following should be treated as incompressible?
A. Ideal fluid
B. Real fluid
C. Solid
D. Can’t say
45: The unit of specific weight is:
A. Kg/m^3
B. N/m^3
C. M^3/kg
D. None of these
46: Kinematic viscosity is the ratio of ____.
A. Density and dynamic viscosity of the fluid
B. Velocity gradient and density of the fluid
C. Dynamic viscosity and density of the fluid
D. Density and velocity gradient of the fluid
47: Stoke is the unit of:
A. Specific gravity
B. Dynamic viscosity
C. Kinematic viscosity
D. None of these
48: One stoke is equal to ____.
A. 10-2 m2/sec
B. 10-3 m2/sec
C. 10-1 m2/sec
D. 10-4 m2/sec
49: Newton’s law of viscosity is ____.
A. Shear stress is inversely proportional to rate of shear strain
B. Shear strain is inversely proportional to shear stress
C. Shear stress is directly proportional to rate of shear strain
D. Shear stress = rate of shear strain
50: Which one of the following is a wrong statesman?
A. The viscosity of an ideal fluid is zero
B. The viscosity of real fluid is zero
C. Water and air are Newtonian fluid
D. Milk is a non-Newtonian fluid
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Computational Fluid Dynamics MCQs
