Finite Element Techniques Mid - II, November - 2014

1.Accuracy of solution in a 2‐D component depends on
  • Included angle of elements
  • Size of the component
  • No. of d.o.f /node
  • Type of load
Answer: A
2.Stress‐strain matrix for axisymmetric element is of order
  • 3x3
  • 4x4
  • 6x6
  • 9x9
Answer: B
3.Number of stress components per node calculated for a triangular axisymmetric element is
  • 2
  • 3
  • 4
  • 5
Answer: C
4.A 3‐D dam is usually modeled with
  • 2‐D plane stress elements
  • 2‐D plane strain elements
  • 3‐D solid elements
  • 3‐D shell elements
Answer: B
5.An element with in‐plane loads having 3‐nodes along each side is a
  • Constant strain element
  • Linear strain element
  • Quadratic strain element
  • Constant displacement element
Answer: B
6.Derivatives of displacement function with respect to element coordinate system and non‐ dimensional coordinate system is given by
  • Lagrangian
  • Poisson
  • Gaussian
  • Jacobian
Answer: D
7.A symmetric structure can be analysed by modeling one symmetric part
  • Depending on applied loads
  • Depending on boundary conditions
  • Always yes
  • Depending on applied loads & boundary conditions
Answer: D
8.Gaussian points are used for
  • Numerical integration
  • Displacement calculation
  • Stress calculation
  • Strain calculation
Answer: A
9.Principal modes of vibration of a multi‐degrees of freedom system are
  • Parallel
  • Orthogonal
  • Inter multiples
  • Fractional multiples
Answer: B
10.With lumped mass matrix, the differential equation of vibration refers to
  • Elastic coupling
  • Inertia coupling
  • Mode superposition
  • Both (a) and (b)
Answer: A
11.A concrete pedestal is represented by ___________ type elements.
Answer: 3-D solid
12.An axisymmetric element has ______number of degrees of freedom, compared to a symmetric elements.
Answer: Less
13.Number of shape functions for a 8‐noded quadrilateral plane stress element are _________.
Answer: 8
14.Shape functions for a triangular plane stress element are also called as ________________.
Answer: Area coordinates
15.Conductance matrix is the equivalent of stiffness matrix in __________ analysis.
Answer: Thermal
16.Number of degrees of freedom for a 4‐noded quadrilateral thermal element is __________.
Answer: 4
17.A frequency of value ____________indicates rigid body motion along one degree of freedom.
Answer: Zero
18.Normalising eigenvector with respect to mass matrix is useful in _____________________.
Answer: Mode superposition
19.A 4‐noded cantilever gives ____________ number of frequencies.
Answer: 6
20.A 3‐noded simply supported beam gives _____________ number of frequencies.
Answer: 4