MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Tricky Electromagnetic Theory knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The intrinsic impedance of copper at high frequencies is |
| A. | Purely resistive |
| B. | Purely inductive |
| C. | Complex with a capacitive component |
| D. | Complex with a inductive component |
| Answer» E. | |
| 2. |
Identify which one of the following will NOT satisfy the wave equation. |
| A. | 50e<sup>j(wt 3z)</sup> |
| B. | sin(w(10z + 5t)) |
| C. | cos(y<sup>2</sup> + 5t) |
| D. | sin x cos t |
| Answer» D. sin x cos t | |
| 3. |
The electric field of a uniform plane electromagnetic wve in free space, along the positive direction, is given by E = 10(ay + jaz)e-j25x. The frequency and polarization of the wave, respectively are |
| A. | 1.2 GHz, left circular |
| B. | 4 GHz, left circular |
| C. | 1.2 GHz, right circular |
| D. | 4 GHz, right circular |
| Answer» B. 4 GHz, left circular | |
| 4. |
The electric field strength at a far-off point P due to a point charge, +q located at the origin O is 100 milliVolt/meter. The point charge is now enclosed by a perfectly conducting hollow metal sphere with its centre and the origin O. The electric field strength at the point, P is |
| A. | Remains unchanged in its magnitude and direction |
| B. | Remains unchanged in its magnitude but reverse in direction |
| C. | Would be that due to a dipole formed by the charge, +q, at O and -q induced |
| D. | Would be zero |
| Answer» E. | |
| 5. |
An electric field on a plane is described by its potential V = 20(r-1 + r-2), where r is the distance from the source. The field is due to |
| A. | A monopole |
| B. | A dipole |
| C. | Both a monopole and a dipole |
| D. | A quadruple |
| Answer» D. A quadruple | |
| 6. |
For the wave equation E = 10sin (wt-5z)ax, the wave propagation will be in the direction of |
| A. | Y direction |
| B. | Z direction |
| C. | X direction |
| D. | XY direction |
| Answer» C. X direction | |
| 7. |
Magnetic vector potential is a vector |
| A. | Whose curl is equal to the magnetic flux density |
| B. | Whose curl is equal to the electric field intensity |
| C. | Whose divergence is equal to electric potential |
| D. | Which is equal to the vector product E x H |
| Answer» B. Whose curl is equal to the electric field intensity | |
| 8. |
The tangential component of an electric field will be continuous in which boundary? |
| A. | Conductor-Conductor |
| B. | Conductor-Dielectric |
| C. | Dielectric-Dielectric |
| D. | Any boundary |
| Answer» E. | |