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Q1.1 What is not true about FEA? 1. It gives exact solution. 2. It is used to solved PDE. 3. It is a mathematical tool. 4. It makes use of boundary conditions.

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Page 1: Q1.1 What is not true about FEA? - NPTELnptel.ac.in/courses/112104193/Assignments/Week1.pdfQ1.1 What is not true about FEA? 1. It gives exact solution. 2. It is used to solved PDE

Q1.1 What is not true about FEA?

1. It gives exact solution.

2. It is used to solved PDE.

3. It is a mathematical tool.

4. It makes use of boundary conditions.

Page 2: Q1.1 What is not true about FEA? - NPTELnptel.ac.in/courses/112104193/Assignments/Week1.pdfQ1.1 What is not true about FEA? 1. It gives exact solution. 2. It is used to solved PDE

Q1.2 Which of the following is not a characteristic of FEA?

1. It is a numerical technique.

2. It is highly general & flexible.

3. It requires an initial guess.

4. It can be automated.

Page 3: Q1.1 What is not true about FEA? - NPTELnptel.ac.in/courses/112104193/Assignments/Week1.pdfQ1.1 What is not true about FEA? 1. It gives exact solution. 2. It is used to solved PDE

Q1.3 What is true about FEA?

• Residue obtained equals zero.

• The solution is exact.

• The solution is exact at boundaries.

• It is an analytical technique.

Page 4: Q1.1 What is not true about FEA? - NPTELnptel.ac.in/courses/112104193/Assignments/Week1.pdfQ1.1 What is not true about FEA? 1. It gives exact solution. 2. It is used to solved PDE

Q1.4 FEA technique involves dividing the domain into:

1. Parts

2. Elements

3. Objects

4. Pieces

Page 5: Q1.1 What is not true about FEA? - NPTELnptel.ac.in/courses/112104193/Assignments/Week1.pdfQ1.1 What is not true about FEA? 1. It gives exact solution. 2. It is used to solved PDE

Q1.5 What does Interpolation function represent?

1. Change in variable over an element.

2. Change in variable over the whole domain.

3. Shape of the element.

4. Shape of the whole domain.

Page 6: Q1.1 What is not true about FEA? - NPTELnptel.ac.in/courses/112104193/Assignments/Week1.pdfQ1.1 What is not true about FEA? 1. It gives exact solution. 2. It is used to solved PDE

Q1.6 Maximum error will be present in which of the following shape function?

1. Constant

2. Linear

3. Quadratic

4. Cubic

Page 7: Q1.1 What is not true about FEA? - NPTELnptel.ac.in/courses/112104193/Assignments/Week1.pdfQ1.1 What is not true about FEA? 1. It gives exact solution. 2. It is used to solved PDE

Q1.7 When can we use axisymmetric governing equations?1. Cross-section is axisymmetric.

2. Boundary Conditions are axisymmetric.

3. Material properties are axisymmetric.

4. Loading conditions are axisymmetric.

5. All of the above.

Page 8: Q1.1 What is not true about FEA? - NPTELnptel.ac.in/courses/112104193/Assignments/Week1.pdfQ1.1 What is not true about FEA? 1. It gives exact solution. 2. It is used to solved PDE

Q1.8 ∑ T1(r) = T11Ψ1

1(r) + T21 Ψ2

1(r) + T31 Ψ3

1(r) + ….What does the highlighted part represent?

1. Element number 1

2. Node number 1

3. Material number 1

4. Equation number 1

Page 9: Q1.1 What is not true about FEA? - NPTELnptel.ac.in/courses/112104193/Assignments/Week1.pdfQ1.1 What is not true about FEA? 1. It gives exact solution. 2. It is used to solved PDE

Q1.9 ∑ T1(r) = T11Ψ1

1(r) + T21 Ψ2

1(r) + T31 Ψ3

1(r) + ….What does the highlighted part represent?

1. Element number 1

2. Node number 1

3. Material number 1

4. Equation number 1

Page 10: Q1.1 What is not true about FEA? - NPTELnptel.ac.in/courses/112104193/Assignments/Week1.pdfQ1.1 What is not true about FEA? 1. It gives exact solution. 2. It is used to solved PDE

Q1.10 ∑ T1(r) = T11Ψ1

1(r) + T21 Ψ2

1(r) + T31 Ψ3

1(r) + ….What does the highlighted part represent?

1. Primary Variable

2. Element Number 1

3. Shape Function

4. Node Number 1

Page 11: Q1.1 What is not true about FEA? - NPTELnptel.ac.in/courses/112104193/Assignments/Week1.pdfQ1.1 What is not true about FEA? 1. It gives exact solution. 2. It is used to solved PDE

Q1.11 If a domain is discretized into N linear 1-D elements, then the number of nodes will be:

1. N

2. N+1

3. N-1

4. 2N

Page 12: Q1.1 What is not true about FEA? - NPTELnptel.ac.in/courses/112104193/Assignments/Week1.pdfQ1.1 What is not true about FEA? 1. It gives exact solution. 2. It is used to solved PDE

Q1.12 In a 1-D cubic element, how many nodes are present?

1. 1

2. 2

3. 3

4. 4

Page 13: Q1.1 What is not true about FEA? - NPTELnptel.ac.in/courses/112104193/Assignments/Week1.pdfQ1.1 What is not true about FEA? 1. It gives exact solution. 2. It is used to solved PDE

Q1.13 If the number of nodes in a 1-D element is N, then order of the element is:

1. N

2. N+1

3. N-1

4. 2N

Page 14: Q1.1 What is not true about FEA? - NPTELnptel.ac.in/courses/112104193/Assignments/Week1.pdfQ1.1 What is not true about FEA? 1. It gives exact solution. 2. It is used to solved PDE

Q1.14 What is the meaning of convergence?

1. Element converging to a point.

2. Residue tending to zero.

3. Increasing order of shape function.

4. Increasing the number of elements.

Page 15: Q1.1 What is not true about FEA? - NPTELnptel.ac.in/courses/112104193/Assignments/Week1.pdfQ1.1 What is not true about FEA? 1. It gives exact solution. 2. It is used to solved PDE

Q1.15 Which of the following will increase the error?

1. Increasing the number of elements.

2. Increasing the order of shape functions.

3. Increasing the number of decimals in numerical values.

4. None of these.

Page 16: Q1.1 What is not true about FEA? - NPTELnptel.ac.in/courses/112104193/Assignments/Week1.pdfQ1.1 What is not true about FEA? 1. It gives exact solution. 2. It is used to solved PDE

Q1.16 FEA can handle

1. Homogeneous systems with simple assemblies.

2. Non-Homogeneous systems with complex assemblies.

3. Non-Homogeneous systems with simple assemblies.

4. All of the above.

Page 17: Q1.1 What is not true about FEA? - NPTELnptel.ac.in/courses/112104193/Assignments/Week1.pdfQ1.1 What is not true about FEA? 1. It gives exact solution. 2. It is used to solved PDE

Q1.17 What does the X-Axis, Red line & Blue line signify respectively:

1. No. of nodes, Exact solution, FEA solution.

2. No. of elements, Exact solution, FEA solution

3. No. of nodes, FEA solution, exact solution.

4. No. of elements, FEA solution, exact solution.

Page 18: Q1.1 What is not true about FEA? - NPTELnptel.ac.in/courses/112104193/Assignments/Week1.pdfQ1.1 What is not true about FEA? 1. It gives exact solution. 2. It is used to solved PDE

Q1.18 Example of a scalar variable is:

1. Stress

2. Temperature

3. Displacement

4. Velocity

Page 19: Q1.1 What is not true about FEA? - NPTELnptel.ac.in/courses/112104193/Assignments/Week1.pdfQ1.1 What is not true about FEA? 1. It gives exact solution. 2. It is used to solved PDE

1. Coefficients

2. Weight Functions

3. Error Functions

4. Residue

Page 20: Q1.1 What is not true about FEA? - NPTELnptel.ac.in/courses/112104193/Assignments/Week1.pdfQ1.1 What is not true about FEA? 1. It gives exact solution. 2. It is used to solved PDE

1. Domain

2. Node

3. Residue

4. None of these