B. E.
(MECHANICAL) : FINITE ELEMENT ANALYSIS
MCQ QUESTION BANK
UNIT QUESTION OPTION 1 OPTION 2 OPTION 3 OPTION 4 CORRECT OPTION (ANSWER)
While discretizing a domain in FEA, maximum error occurs when shape function is Constant Linear Quadratic Cubic 1
In a 1-D cubic element, how many nodes are present? One Two Three Four 4
One of the dimension is very large in comparison to rest of Two of the dimensions are very large in comparison
When to use 1D Element One of the dimension is very small in comparison to rest of you All dimensions are comparatively similar 1
you to third one
In 1D Element, how many number of nodes for three element in finite element modeling ? 1 2 3 4 4
Consider a one-dimensional domain discretised using finite-element method (FEM). If the material-matrix is of The number of global degrees of freedom is 20 and 9 total The number of global degrees of freedom is 5 and 18 total The number of global degrees of freedom is 20 and 2
The number of global degrees of freedom is 10 and 9 total elements
the size 10 × 10 and there are 2 unknowns in each element then, which of the following statement is true? elements elements 16 total elements
Which of the following will increase the error?
1. Increasing the number of elements.
2. Increasing the order of shape functions. Only Sentenance 1 is correct Only Sentenance 4 is correct Only Sentenance 1, 2 and 3 are correct Only Sentenance 1 and 2 are correct 2
3. Increasing the number of decimals in numerical values.
4. None of these.
Most FEM software reduce computer memory requirement by storing Half of symmetric stiffness matrix Half of banded matrix Stiffness matrix as a column vector Complete stiffness matrix 2
Primary variable in FEM structural analysis is Displacement Force Stress Strain 1
UNIT II One of the dimension is very large in comparison to rest of Two of the dimensions are very large in comparison
1
When to use 1D Element One of the dimension is very small in comparison to rest of you All dimensions are comparatively similar
you to third one
For the matrix equation [K]{u} = {f} + {Q}, natural boundary conditions are incorporated in which of the
[K] {u} {f} {Q} 4
following matrices?
The equation for thermal stress in each element is σ = E (Bq + α Δt) σ = E (Bq - α Δt) σ = E (B + α Δt) σ = E (B - α Δt) 2
Example for one – Dimensional element is Triangular element brick element truss element Axisymmetric element 3
The strain energy per unit volume is equal to (1/2) × Force × Deflection (1/4) × Force × Deflection (1/2) × Stress × Deflection (1/4) × Stress × Deflection 1
Order of stiffness matrix corresponds to total dofs w.r.t.
Order of stiffness matrix corresponds to Order of stiffness matrix corresponds to total number of elements Corresponds to load Corresponds to material 1
nodes
Terms attributable to the presence of external
For the equation [K]{u} = {F}, the vector {F} contains: Stiffness terms Force terms attributable to distributed external load Primary Variable term 4
concentrated as well as distributed loads
In truss analysis, the reactions can be found by using the equation R=KQ+F R=KQ-F R=K+QF R=K-QF 2
In case of a truss member if there are 3 nodes and each node 2 DOF, then the order of Stiffness matrix is 2×2 3×3 2×3 6×6 4
Consider a one-dimensional domain discretised using finite-element method (FEM). If the material-matrix is of The number of global degrees of freedom is 20 and 9 total The number of global degrees of freedom is 5 and 18 total The number of global degrees of freedom is 15 and 2
The number of global degrees of freedom is 10 and 9 total elements
the size 10 × 10 and there are 2 unknowns in each element then, which of the following statement is true? elements elements. 18 total elements.
