Fluid Mechanics MCQs
Fluid Mechanics MCQs
These Fluid Mechanics multiple-choice questions and their answers will help you strengthen your grip on the subject of Fluid Mechanics. You can prepare for an upcoming exam or job interview with these Fluid Mechanics MCQs.
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1: If the tensor is anti-symmetric with respect to its first two indices, what does Aijk mean?
A. Aijk = -1
B. Aijk is symmetric
C. Aijk = "Ajik
D. Aijk = 0
2: What is an example of a closed 2-D curve?
A. Hyperbola
B. Path
C. Bézier curve
D. Parabola
E. Ellipse
3: What is the length of the product vector produced by the cross product?
A. Irrelevant
B. Proportional to
C. Triangular
D. Opposite of
E. Inverse of the product vector
4: What is the product of the gradient operator with a vector?
A. Dot Product
B. Curl Cross
C. Vector magnitude
D. Vector Dot
E. Vector Cross
5: What kind of fluid has an orientation vector?
A. Dynamic
B. Structured
C. Biconic
D. Eulerian
6: A body of revolution is an example of what?
A. Unstructured gas
B. Solid sphere
C. An idea
D. Structured fluid
E. A large quantity of fuel
7: What is the limit where R<<1?
A. Limit of a rational function
B. Infinity
C. Limit of an irrational function
D. 0
E. Flat Earth Limit
8: What direction is y=r-R?
A. Counterclockwise
B. Uniform
C. Reflection
D. Normal
E. Clockwise
9: What are the front and the back of a body reflections of each other?
A. A cylinder or a football
B. A mirror
C. Two circles
D. Two rectangles
10: What is another name for Einstein Notation?
A. Index Notation
B. Notation of Quantum Mechanics
C. Alphabet Notation
D. Symbol Notation
E. Notation of General Relativity
11: What is the name of the language used to describe vectors, tensors, and fluid mechanics?
A. Mach-Zehnder Formula
B. APL
C. Lorentz Force Law
D. Mathematica
E. Einstein Notation
12: What are all scalars?
A. Isotropic
B. Tensors
C. Vectors
D. Singular
E. Vector
13: The Kronecker delta function is one if the indices are what?
A. Equal
B. Negative
C. Powers of two
D. Integers
E. 1
14: What is a good example of a physical tensor?
A. Electric field
B. Electric current
C. Mass
D. Position
15: What doesn't depend on the coordinate system you use?
A. The position of an object in a coordinate system
B. The speed of light in a vacuum
C. The Euler characteristic
D. The sign of a physical tensor
E. The Poisson bracket
16: What do you convert from a pseudo tensor to a physical tensor?
A. Division
B. Integration
C. Multiplication
D. Addition
17: What does change sign under an orientation reversing coordinate?
A. Matrix
B. Real Tensor
C. Pseudo Tensor
D. Vector
18: What can you not do when using repeated indices?
A. Use an Out-Of-Bounds Exception
B. Access a field before it is initialized
C. Use a custom index
D. Add an index
E. Repeat an index
19: What is the index representation of the inner or dot product?
A. Vector Space
B. Column Store Index
C. Vectorized Index
D. Repeated Index
E. Scalar Product
20: What type of indexing is used in products of repeated indices?
A. Inclusion
B. Exclusion
C. Summation
D. Inverted index
E. Weighted average
21: What type of Point values don't have a direction?
A. Vectors
B. Matrices
C. Scalars
22: In what type of representation do a tensor can be represented as?
A. Vector
B. Matrix
C. Scalar
D. Multi-dimensional array
23: What is another name for a matrix?
A. Square matrix, triangular matrix, or quaternion
B. Sheet, slab, or grid
C. Table or array
D. Array, table, or dataset
E. Zero (scalar), one (vector), two (usual matrix), or higher number of dimensions
24: Relating to mathematical description of sound waves, what is the field called that deals with acoustics?
A. Acoustic physics
B. Acoustic engineering
C. Acoustic theory
D. Acoustics
25: What type of theory is acoustic theory?
A. Theoretical
B. Sociology
C. Experimental
D. Physics
E. Mathematical
26: What is the basic science of acoustics?
A. Acoustic Engineering
B. Audiology
C. Acoustics
D. Acoustical Engineering
27: What is a term that is related to Acoustical Engineering?
A. Develops ways to correct sound problems in buildings
B. Develops methods for measuring sound levels
C. Uses mathematical models to recreate sound patterns
D. Explains to architects and engineers the basic science of acoustics
E. Studies the physics and engineering of sound
28: What type of science studies the flow of gases?
A. Earth science
B. Chemistry
C. Geology
D. Aerodynamics
29: What type of flow is studied by aerodynamics?
A. Solids
B. Gases
C. Solid
D. Liquid
E. Liquids
30: What is the name of the law that describes the relationship between the change in density and the change in temperature and pressure for an ideal gas?
A. Ideal Gas Law
B. Charles's Law
C. Gas Law
D. Thermodynamic Equation
E. Boyle-Mariotte Law
31: The Ideal Gas Law is what suggests that the change in density is directly related to the change in temperature and pressure?
A. For a perfect or ideal gas
B. The Charles Law
C. The Boyles Law
D. The gas law is a relation between temperature and pressure
E. The gas law states that PV = nRT
32: What is the mathematics and mechanics of flying objects?
A. Aerospace engineering
B. Mechanics
C. Astronomy
D. Aeronautics
33: What type of mathematics is involved in aeronautics?
A. Statistics
B. Mechanics
C. Linear Algebra
D. Calculus
34: What equation describes the behavior of moving fluids along a streamline?
A. Equation of State
B. The Navier-Stokes Equation
C. Viscous Flow
D. Bernoulli's Equation
E. The equations of hydrostatics
35: The Bernoulli's Equation describes the behavior of what?
A. Solid particles
B. Gasoline
C. Gas molecules
D. Moving fluids
E. Blowing bubbles
36: The boundary layer is the layer of fluid in the immediate vicinity of what?
A. A surface of revolution
B. A bounding surface
C. A vacuum
D. A surface of contact
E. The surface of a body
37: What is the term for the layer of fluid in the immediate vicinity of a bounding surface?
A. Film
B. Aerosol layer
C. Fluid sheath
D. Boundary layer
E. Subsurface layer
38: What are cSt, cP, SSU and ESU?
A. Cubic centiStokes
B. Second
C. Cubic meters
D. CentiStokes
E. Square feet
39: How many different kinds of viscosity are there?
A. Dynamic, Absolute and Kinematic Viscosity
B. Thermal, Fluids and Plastics Viscosity
C. Static, Kinematic and Absolute Viscosity
D. Molecular, Cooper and Rayleigh Viscosity
E. Dynamic, Kinematic and Absolute Viscosity
40: What is NPSH?
A. Net Positive Suction Head
B. Negative Pressure Suction Head
C. Positive Pressure Suction Head
41: What do control valves do?
A. Convert heat to work
B. Convert heat to mechanical energy
C. Regulate fluid pressure
D. Cavitation
E. Regulate pressure
42: Roughly how many stages of control valve are typically used?
A. Two stage control valves
B. One stage control valves
C. Multi stage control valves
D. Single stage control valves
43: The compressibility of the fluid must be considered when what type of flow is involved?
A. Rarefied
B. Compressible
C. Incompressible
44: If a fluid is compressible, what must be considered?
A. Compressibility
B. Pressure
C. Volume
D. Temperature
45: What does the Ideal Gas Law say about the change in density with changes in temperature or pressure?
A. Dependent on temperature
B. Directly related
C. Temperature has no effect
D. Dependent on pressure
E. Pressure has no effect
46: What is the name of the law that states that the change in density of a gas is related to the change in temperature and pressure?
A. Ideal Gas Law
B. Thermodynamic Law
C. Charles's Law
D. Conservation of Energy
E. Boyle's Law
47: What must be done differently for gas mixtures than for ideal gases?
A. Dealing with compressibility
B. Calculating the volume
C. Calculating the mass
D. Taking into account temperature
E. Calculating the pressure
48: What field is concerned with the relationship between temperature and volume?
A. Fluid mechanics and thermodynamics
B. Earth science
C. Mechanical engineering
D. Chemistry
E. Chemical engineering
49: What is the name of the constant commonly used in fluid mechanics and thermodynamics?
A. The Kinematic viscosity of water
B. The Boltzmann Constant
C. The Thermal conductivity of copper
D. The Fluid Mechanics Speed of Sound
E. The Individual and Universal Gas Constant
50: What is the Coanda Effect?
A. The tendency of a fluid to circulate around an obstacle
B. The tendency of a stream of fluid to stay attached to a convex surface
C. The ability of gas to move through small holes
D. The tendency for a liquid to flow over a curved surface
E. The tendency of a fluid to move in a straight line
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