Method of moments (MoM) – MCQs – EE

1. The Method of Moments (MoM) is primarily used to:
(A) Solve integral equations numerically
(B) Step response only
(C) Solve DC circuits only
(D) Load flow analysis

2. MoM converts continuous equations into:
(A) Discrete system of linear algebraic equations
(B) Step response only
(C) Only voltage nodes
(D) Transformer winding calculations

3. In MoM, unknown quantities are expanded using:
(A) Basis functions
(B) Step response only
(C) Only load flow currents
(D) Voltage sources only

4. MoM is particularly suitable for:
(A) Open-region problems like antennas and scattering
(B) Step response only
(C) Only DC networks
(D) Load flow only

5. MoM requires:
(A) Discretization of the problem domain into segments or patches
(B) Step response only
(C) Only transformer sections
(D) Load flow grid

6. MoM is a:
(A) Frequency-domain method
(B) Step response only
(C) Only time-domain solver
(D) Load flow method

7. MoM matrix equation is typically:
(A) Dense and complex
(B) Step response only
(C) Only sparse
(D) Load flow sparse

8. The main computational challenge in MoM is:
(A) Large dense matrix inversion
(B) Step response only
(C) Only line impedance measurement
(D) Load flow only

9. MoM is widely used in EE for:
(A) Antenna radiation and scattering analysis
(B) Step response only
(C) Only transformer modeling
(D) Load flow only

10. The choice of basis functions in MoM affects:
(A) Accuracy of the solution
(B) Step response only
(C) Only DC circuits
(D) Load flow measurements

11. Testing functions in MoM are used to:
(A) Project the error of approximation
(B) Step response only
(C) Only load flow error
(D) Voltage measurements

12. Galerkin’s method in MoM uses:
(A) Same functions for testing and expansion
(B) Step response only
(C) Only load flow nodes
(D) Voltage only

13. MoM is commonly applied to:
(A) Wire antennas, patch antennas, and scattering problems
(B) Step response only
(C) Only DC lines
(D) Load flow only

14. The system matrix in MoM represents:
(A) Interaction between basis functions
(B) Step response only
(C) Only voltage equations
(D) Load flow only

15. MoM results in:
(A) Frequency-domain solutions
(B) Step response only
(C) Only DC solutions
(D) Load flow only

16. MoM accuracy improves with:
(A) Finer segmentation and better basis functions
(B) Step response only
(C) Only load flow elements
(D) Voltage adjustments

17. MoM can handle:
(A) Linear and some piecewise-linear problems
(B) Step response only
(C) Only resistive DC networks
(D) Load flow only

18. In MoM, the unknowns typically represent:
(A) Currents or charges on the structure
(B) Step response only
(C) Only load flow currents
(D) Voltage only

19. The MoM solution provides:
(A) Approximate field or current distributions
(B) Step response only
(C) Only DC voltages
(D) Load flow only

20. MoM is considered:
(A) A boundary integral method
(B) Step response only
(C) Only finite difference method
(D) Load flow only

21. The computational cost of MoM increases:
(A) Quadratically or cubically with the number of unknowns
(B) Step response only
(C) Only linearly
(D) Load flow only

22. MoM can model:
(A) Conducting and dielectric surfaces
(B) Step response only
(C) Only resistive wires
(D) Load flow only

23. Advantages of MoM include:
(A) Accuracy for open-region EM problems
(B) Step response only
(C) Only DC circuit analysis
(D) Load flow only

24. MoM requires:
(A) Solving dense matrix equations
(B) Step response only
(C) Only voltage measurement
(D) Load flow only

25. MoM is limited by:
(A) High memory and computational requirements for large problems
(B) Step response only
(C) Only DC networks
(D) Load flow only

26. MoM provides:
(A) Frequency-dependent response of antennas and scatterers
(B) Step response only
(C) Only time-domain snapshots
(D) Load flow only

27. Choice of segment size in MoM affects:
(A) Solution accuracy
(B) Step response only
(C) Only DC voltage
(D) Load flow only

28. MoM is best suited for:
(A) Problems with complex boundaries in open space
(B) Step response only
(C) Only transformers
(D) Load flow only

29. Matrix inversion in MoM can be:
(A) Computationally expensive
(B) Step response only
(C) Only DC linear
(D) Load flow only

30. MoM is an example of:
(A) Boundary element method
(B) Step response only
(C) Only finite difference method
(D) Load flow method