Orthotropic Materials MCQs : Here you will find MCQ Questions related to "Orthotropic Materials" in Finite Element Method. These Orthotropic Materials MCQ Questions Will help you to improve your Finite Element Method knowledge and will prepare you for various Examinations like Competitive Exams, Placements, Interviews and other Entrance Exmaniations
Question 1
Which materials are special orthotropic materials that have one axis of symmetry?
A. Anisotropic materials
B. Orthotropic material
C. Transversely isotropic
D. Polycrystalline
View Answer
Ans : C
Explanation: Transversely isotropic materials are special orthotropic materials that have one axis of symmetry (any other pair of axes that are perpendicular to the main one and orthogonal among themselves are also axes of symmetry).
Question 2
A familiar example of an orthotropic material is?
A. Steel
B. Paper
C. Water
D. Wood
View Answer
Ans : D
Explanation: A familiar example of an orthotropic material is wood.
Question 3
How many orthogonal symmetry planes does orthotropic material has?
A. 2
B. 3
C. 4
D. 5
View Answer
Ans : B
Explanation: An orthotropic material has three orthogonal symmetry planes. If we choose an orthonormal coordinate system such that the axes coincide with the normals to the three symmetry planes.
Question 4
In linear elasticity, the relation between stress and strain depend on the type of material under consideration
A. TRUE
B. FALSE
C. Can be true or false
D. Can not say
View Answer
Ans : A
Explanation: In linear elasticity, the relation between stress and strain depend on the type of material under consideration. This relation is known as Hooke's law.
Question 5
Unidirectional fiber- reinforced composites also exhibit _______ behavior.
A. Isotropic
B. Orthotropic
C. Material
D. Unidirection composite
View Answer
Ans : B
Explanation: Orthotropic materials have material properties that differ along three mutually orthogonal two fold axis of rotational symmetry. They are a subset of anisotropic materials, because their properties change when measured from different directions.
Question 6
The principal material axes that are normal to the _______
A. Co-ordinates
B. Number of nodes
C. Principal axes
D. Plane of symmetry
View Answer
Ans : D
Explanation: Orthotropic materials are a subset of anisotropic; their properties depend upon the direction in which they are measured. Orthotropic materials have three planes of symmetry. That is normal to principal material axes.
Question 7
v12 indicates that the poisson’s ratio that characterizes the decrease in ______ during tension applied in ______.
A. 2- direction and 3- direction
B. 1- direction and 2- direction
C. 2- direction and 1- direction
D. 2- direction and 4- direction
View Answer
Ans : C
Explanation: Poisson’s ratio is the ratio of transverse contraction strain to longitudinal extension strain in the direction of stretching force. Tensile deformation is considered positive and compressive deformation is considered negative.
Question 8
E1 value of Balsa wood is ___
A. 0.125*10^6psi
B. 12.04*10^6psi
C. 23.06*10^6psi
D. 7.50*10^6psi
View Answer
Ans : A
Explanation: A material’s property (or material property) is an intensive, often quantitative, property of some material. Quantitative properties may be used as a metric by which the benefits of one material versus another can be assessed, thereby aiding in materials selection.
Question 9
When an orthotropic plate is loaded parallel to its material axes, it results only _____
A. Shear strains
B. Normal strains
C. Parallel strains
D. Uniform strains
View Answer
Ans : B
Explanation: Orthotropic materials are a subset of anisotropic; their properties depend upon the direction in which they are measured. When an orthotropic plate is loaded parallel to its material axes, it results normal strains.
Question 10
The strain-stress relation for orthotropic linear elastic materials can be written in Voigt notation.
A. TRUE
B. FALSE
C. Can be true or false
D. Can not say
View Answer
Ans : A
Explanation: The strain-stress relation for orthotropic linear elastic materials can be written in Voigt notation.