Finite Element Methods Mid - I, September - 2014

1.The following is/ are the problem areas in which Finite element method can be applicable
  • structural
  • Heat transfer
  • Fluid flow
  • all of these
Answer: D
2.The advantages of Finite element method over analytical method is/are for elements having
  • complicated geometry
  • anisotropic nature
  • different materials
  • all of these
Answer: D
3.A bar is modelled as 1-D element only if its
  • area of cross section is small
  • M.I is small
  • length is very large compared to cross sectional area
  • all of the above
Answer: D
4.Stiffness matrix contains information on
  • gemeotry
  • material properties
  • both
  • none
Answer: C
5.Interpolation functions are
  • predetermined
  • known functions of independent variables
  • description of field variable variation with in the element
  • all of these
Answer: D
6.The stiffness matrix for 1-D bar element is
Answer: A
7.The solution by Finite element method is
  • always exact
  • mostly approximate
  • some times exist
  • never exist
Answer: B
8.Finite Element Method is a generalization of
  • Rayleigh – Ritz Method
  • weighted residual method
  • Finite difference method
  • Finite volume method
Answer: A
9.A 1-D structural element is a
  • truss element
  • beam element
  • bar element
  • all of them
Answer: D
10.A singular stiffness matrix means
  • unstable structure
  • one or more DOF are unrestrained
  • wrong connectivity of elements
  • wrong solution expected
Answer: B
11.Nodal temperature in structural analysis is parameter in ________________vector
Answer: Load
12.Singular assembled stiffness matrix after applying boundary conditions becomes ___________
Answer: Non-singular
13.Any point in a structure can have maximum of ____________degrees of freedom
Answer: 6
14.Primary variable in Finite Element Method for structural analysis is______________
Answer: Displacement
15.A structure with loads at joints only is usually modeled by ____________
Answer: Truss elements
16.Stress across any 1-D element is assumed to be constant. This is true for______________
Answer: All 1-D elements
17.As the number of elements is increased, the problem converges to _____________
Answer: Exact solution
18.A truss element in space has a stiffness matrix of order______________
Answer: 6x6
19.Number of degrees of freedom for 3-noded simply supported beam is ________________
Answer: 4
20.A beam element has a concentrated moment M at the node 2. The load vector due to it will be________________
Answer: [0,0,0,M]T