MCQOPTIONS
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MCQOPTIONS
This section includes 12 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. |
THE_POWER_OF_A_WAVE_IN_A_CYLINDRICAL_WAVEGUIDE_OF_RADIUS_2M_WITH_ELECTRIC_FIELD_12_UNITS_IS?$ |
| A. | 2.39 |
| B. | 3.92 |
| C. | 9.23 |
| D. | 9.32 |
| Answer» B. 3.92 | |
| 2. |
The Poynting vector is the power component that is calculated by the$ |
| A. | Product of E and H |
| B. | Ratio of E and H |
| C. | Dot product of E and H |
| D. | Cross product of E and H |
| Answer» E. | |
| 3. |
The work done in the power transmission with E and H given by 50 and 65 respectively. The velocity of propagation is 20m/s.$ |
| A. | 162.5 |
| B. | 621.5 |
| C. | 562.1 |
| D. | 261.5 |
| Answer» B. 621.5 | |
| 4. |
The maximum power transceived by the antenna is in the region of |
| A. | Aperture |
| B. | Effective aperture |
| C. | Maxima lobe |
| D. | Minima lobe |
| Answer» C. Maxima lobe | |
| 5. |
The power per unit velocity of a wave with electric field as 8 units and density 10 units i? |
| A. | 40 |
| B. | 20 |
| C. | 80 |
| D. | 160 |
| Answer» D. 160 | |
| 6. |
The electric and magnetic fields vary with time in which of the following fields? |
| A. | DC |
| B. | AC |
| C. | Static |
| D. | It does not vary with time |
| Answer» C. Static | |
| 7. |
Find the power of a wave given that the RMS value of E and H are 6 and 4.5 respectively. |
| A. | 24 |
| B. | 27 |
| C. | 29 |
| D. | 32 |
| Answer» C. 29 | |
| 8. |
The power in a wave given that H component is 0.82 units in air. |
| A. | 126.74 |
| B. | 621.47 |
| C. | 216.47 |
| D. | 745.62 |
| Answer» B. 621.47 | |
| 9. |
The power in a electromagnetic wave with electric field and magnetic field intensities 12 and 8 respectively is |
| A. | 96 |
| B. | 12 |
| C. | 8 |
| D. | 48 |
| Answer» E. | |
| 10. |
Find the power of an EM wave, given that the cross product of the E and H component is 2 + 3j. |
| A. | 2 |
| B. | 1 |
| C. | 4 |
| D. | 8 |
| Answer» C. 4 | |
| 11. |
The power of a wave with electric field intensity of 3 units in air is |
| A. | 0.01 |
| B. | 0.03 |
| C. | 0.05 |
| D. | 0.07 |
| Answer» B. 0.03 | |
| 12. |
The total power of a wave with average power 15 units in a surface density of 0.5 units is |
| A. | 15 |
| B. | 30 |
| C. | 7.5 |
| D. | 0.75 |
| Answer» D. 0.75 | |