Finite element method (FEM) applications – MCQs – EE

1. The Finite Element Method (FEM) is primarily used to:
(A) Solve partial differential equations numerically
(B) Only measure line current
(C) Solve DC circuits only
(D) Perform load flow analysis

2. FEM divides a complex domain into:
(A) Finite elements or small subdomains
(B) Step response only
(C) Only voltage nodes
(D) Transformer windings

3. In FEM, unknowns are typically:
(A) Nodal values of field quantities
(B) Step response only
(C) Only load flow currents
(D) Transformer voltages only

4. FEM is widely used in EE for:
(A) Electromagnetic field analysis in transformers and machines
(B) Step response only
(C) Only DC lines
(D) Load flow only

5. FEM can handle:
(A) Complex geometries and inhomogeneous materials
(B) Step response only
(C) Only resistive networks
(D) Load flow only

6. FEM solves equations by:
(A) Approximating the field using shape functions
(B) Step response only
(C) Only line voltage
(D) Load flow only

7. The FEM system matrix is usually:
(A) Sparse and large
(B) Step response only
(C) Only dense
(D) Load flow matrix

8. FEM is particularly suitable for:
(A) Devices with irregular shapes and material variations
(B) Step response only
(C) Only DC wires
(D) Load flow only

9. In FEM, mesh refinement improves:
(A) Solution accuracy
(B) Step response only
(C) Only line current
(D) Load flow only

10. FEM applications in EE include:
(A) Transformer, motor, and generator modeling
(B) Step response only
(C) Only DC networks
(D) Load flow only

11. Boundary conditions in FEM are used to:
(A) Specify known field values or fluxes at edges
(B) Step response only
(C) Only voltage nodes
(D) Load flow only

12. FEM can analyze:
(A) Magnetic flux distribution in machines
(B) Step response only
(C) Only line voltages
(D) Load flow only

13. FEM is suitable for:
(A) Non-uniform material properties
(B) Step response only
(C) Only resistive wires
(D) Load flow only

14. FEM requires:
(A) Discretization of the domain into elements
(B) Step response only
(C) Only line segments
(D) Load flow nodes

15. In FEM, shape functions are used to:
(A) Approximate the field inside each element
(B) Step response only
(C) Only voltage measurement
(D) Load flow only

16. FEM can model:
(A) Electric machines, power transformers, and inductors
(B) Step response only
(C) Only DC resistors
(D) Load flow only

17. FEM accuracy depends on:
(A) Mesh density and element type
(B) Step response only
(C) Only line current
(D) Load flow only

18. FEM is widely used for:
(A) Electromagnetic compatibility and device design
(B) Step response only
(C) Only DC line analysis
(D) Load flow only

19. FEM can handle:
(A) Nonlinear magnetic materials
(B) Step response only
(C) Only resistive DC circuits
(D) Load flow only

20. FEM results in:
(A) Approximate field distributions and forces
(B) Step response only
(C) Only DC voltages
(D) Load flow only

21. FEM is a:
(A) Numerical method for solving PDEs
(B) Step response only
(C) Only DC solver
(D) Load flow method

22. FEM can analyze:
(A) Magnetic field in inductors and transformers
(B) Step response only
(C) Only resistive wires
(D) Load flow only

23. FEM can calculate:
(A) Induced currents, flux density, and forces
(B) Step response only
(C) Only line voltages
(D) Load flow only

24. FEM meshing can be:
(A) Structured or unstructured
(B) Step response only
(C) Only uniform
(D) Load flow only

25. FEM limitations include:
(A) High computational cost for fine meshes
(B) Step response only
(C) Only line voltage
(D) Load flow only

26. FEM can model:
(A) Coupled electromagnetic and thermal problems
(B) Step response only
(C) Only DC circuits
(D) Load flow only

27. FEM is used in:
(A) Power system component design and analysis
(B) Step response only
(C) Only transformer rating
(D) Load flow only

28. In FEM, increasing element order improves:
(A) Accuracy of the solution
(B) Step response only
(C) Only voltage measurement
(D) Load flow only

29. FEM helps to:
(A) Predict device behavior without extensive prototypes
(B) Step response only
(C) Only line current measurement
(D) Load flow only

30. FEM can be combined with:
(A) Circuit simulators for co-simulation of devices
(B) Step response only
(C) Only DC load analysis
(D) Load flow only