MCQOPTIONS
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MCQOPTIONS
This section includes 21 Mcqs, each offering curated multiple-choice questions to sharpen your Electromagnetic Theory knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which is not a type of boundary conditions in CFD? |
| A. | Cyclic boundary conditions |
| B. | Symmetry boundary conditions |
| C. | Wall boundary conditions |
| D. | Nodal boundary conditions |
| Answer» E. | |
| 2. |
Which of these is not a combination of Neumann and Dirichlet Boundary conditions? |
| A. | Cauchy boundary conditions |
| B. | Wall boundary conditions |
| C. | Mixed boundary conditions |
| D. | Robin boundary conditions |
| Answer» C. Mixed boundary conditions | |
| 3. |
Which among these is a combination of value specified and flux specified boundary conditions? |
| A. | Dirichlet |
| B. | Mixed |
| C. | Neumann |
| D. | Symmetry |
| Answer» C. Neumann | |
| 4. |
Initial conditions are used for __________ problems. |
| A. | time-dependent problems |
| B. | boundary value problems |
| C. | control volume problems |
| D. | finite difference problems |
| Answer» C. control volume problems | |
| 5. |
In Dirichlet boundary conditions, the flux values _________ |
| A. | can be calculated |
| B. | are unknowns |
| C. | are known |
| D. | are 0 |
| Answer» B. are unknowns | |
| 6. |
The Neumann and Dirichlet boundary conditions are _________ and _________ in mathematical terms. |
| A. | value specified, flux specified |
| B. | flux specified, value specified |
| C. | flux specified, gradient specified |
| D. | value specified, time specified |
| Answer» C. flux specified, gradient specified | |
| 7. |
The boundary condition represented in the following diagram is ___________ |
| A. | Dirichlet |
| B. | Periodic |
| C. | Neumann |
| D. | Axisymmetric |
| Answer» D. Axisymmetric | |
| 8. |
Which of these best define the Dirichlet boundary conditions for the property Φ at a point ‘b’ in a boundary? |
| A. | \(\frac{\partial^3 \Phi}{\partial^3 x}\) |
| B. | \(\frac{\partial^2 \Phi}{\partial^2 x}\) |
| C. | \(\frac{\partial\Phi}{\partial x}\) |
| D. | Φb |
| Answer» E. | |
| 9. |
What are the two major types of boundary conditions? |
| A. | Wall and symmetry |
| B. | Inlet and outlet |
| C. | Dirichlet and Neumann |
| D. | Initial and physical |
| Answer» D. Initial and physical | |
| 10. |
Which among these is used to specify a particular problem which we consider for solving in CFD? |
| A. | Boundary conditions |
| B. | Governing equations |
| C. | Governing laws |
| D. | Solution method |
| Answer» B. Governing equations | |
| 11. |
A wave incident on a surface at an angle 60 degree is having field intensity of 6 units. The reflected wave is at an angle of 30 degree. Find the field intensity after reflection. |
| A. | 9.4 |
| B. | 8.4 |
| C. | 10.4 |
| D. | 7.4 |
| Answer» D. 7.4 | |
| 12. |
A_WAVE_INCIDENT_ON_A_SURFACE_AT_AN_ANGLE_60_DEGREE_IS_HAVING_FIELD_INTENSITY_OF_6_UNITS._THE_REFLECTED_WAVE_IS_AT_AN_ANGLE_OF_30_DEGREE._FIND_THE_FIELD_INTENSITY_AFTER_REFLECTION.?$ |
| A. | 9.4 |
| B. | 8.4 |
| C. | 10.4 |
| D. | 7.4 |
| Answer» D. 7.4 | |
| 13. |
Find_the_permittivity_of_the_surface_when_a_wave_incident_at_an_angle_60_is_reflected_by_the_surface_at_45_in_air.$ |
| A. | 1.41 |
| B. | 3.5 |
| C. | 2.2 |
| D. | 1.73 |
| Answer» E. | |
| 14. |
The electric field intensity of a surface with permittivity 3.5 is given by 18 units. What the field intensity of the surface in air? |
| A. | 5.14 |
| B. | 0.194 |
| C. | 63 |
| D. | 29 |
| Answer» D. 29 | |
| 15. |
The electric flux density of a surface with permittivity of 2 is given by 12 units. What the flux density of the surface in air? |
| A. | 24 |
| B. | 6 |
| C. | 1/6 |
| D. | 0 |
| Answer» C. 1/6 | |
| 16. |
The normal component of which quantity is always discontinuous at the boundary? |
| A. | E |
| B. | D |
| C. | H |
| D. | B |
| Answer» C. H | |
| 17. |
Which component of the electric field intensity is always continuous at the boundary? |
| A. | Tangential |
| B. | Normal |
| C. | Horizontal |
| D. | Vertical |
| Answer» B. Normal | |
| 18. |
Find the flux density at the boundary when the charge density is given by 24 units. |
| A. | 12 |
| B. | 24 |
| C. | 48 |
| D. | 96 |
| Answer» C. 48 | |
| 19. |
Find the electric field if the surface density at the boundary of air is 10-9. |
| A. | 12π |
| B. | 24π |
| C. | 36π |
| D. | 48π |
| Answer» D. 48‚âà√¨‚àö√ë | |
| 20. |
For a conservative field which of the following equations holds good? |
| A. | ‚à´ E.dl = 0 |
| B. | ‚à´ H.dl = 0 |
| C. | ‚à´ B.dl = 0 |
| D. | ‚à´ D.dl = 0 |
| Answer» B. ‚Äö√Ñ√∂‚àö‚Ƭ¨¬• H.dl = 0 | |
| 21. |
The charge within a conductor will be |
| A. | 1 |
| B. | -1 |
| C. | 0 |
| D. | ‚àû |
| Answer» D. ‚Äö√Ñ√∂‚àö‚Ć‚àö¬™ | |