MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Force in current carrying conductor placed in magnetic field is ___________ of il and B. |
| A. | dot product |
| B. | scalar product |
| C. | cross product |
| D. | vector addition |
| Answer» D. vector addition | |
| 2. |
If the intensity of the magnetic field perpendicular to current carrying conductor is 100T, the length of the conductor is 3m and the current in the conductor is 10A, calculate the magnitude of force perpendicular to the electric field. |
| A. | 300N |
| B. | 30N |
| C. | 30kN |
| D. | 3kN |
| Answer» E. | |
| 3. |
If the intensity of the magnetic field is 100T, the length of the conductor is 10m and the magnitude of force perpendicular to the magnetic field is 10kN,calculate the current in the conductor. |
| A. | 100 A |
| B. | 100 mA |
| C. | 10 A |
| D. | 10 mA |
| Answer» D. 10 mA | |
| 4. |
If net force is zero on a particle in magnetic field what is relation between velocity and magnetic field? |
| A. | v=E*B |
| B. | v=E/B |
| C. | v=B/E |
| D. | v=1/(E*B) |
| Answer» C. v=B/E | |
| 5. |
When the magnetic field intensity in the current carrying conductor increases, what happens to the force in the conductor which is at right angles to the magnetic field? |
| A. | Increases |
| B. | Decreases |
| C. | Remains the same |
| D. | Becomes zero |
| Answer» B. Decreases | |
| 6. |
Which among the following, is the correct expression for force in a current carrying conductor if magnetic field is perpendicular to it? |
| A. | F=Bi |
| B. | F=B2il |
| C. | F=Bil |
| D. | F=Bl2 |
| Answer» D. F=Bl2 | |
| 7. |
WEAKEST_FORCE_IN_NATURE_IS_________?$ |
| A. | Electric force |
| B. | Gravitational force |
| C. | Weak force |
| D. | Magnetic force |
| Answer» B. Gravitational force | |
| 8. |
If the intensity of the magnetic field is 100T, the length of the conductor is 3m and the current in the conductor is 10A, calculate the magnitude of force perpendicular to the electric field? |
| A. | 300N |
| B. | 30N |
| C. | 30kN |
| D. | 3kN |
| Answer» E. | |
| 9. |
The ratio of magnetic force to electric force on a charged particle getting undeflected in a field is ___________ |
| A. | 1 |
| B. | 0 |
| C. | 2 |
| D. | 4 |
| Answer» B. 0 | |
| 10. |
If the flow of electric current is parallel to the magnetic field, the force will be ________ |
| A. | Zero |
| B. | Infinity |
| C. | Maximum |
| D. | Half the original value |
| Answer» B. Infinity | |
| 11. |
The unit for force in a current carrying conductor is _________ |
| A. | Newton |
| B. | Tesla |
| C. | Weber/metre |
| D. | Ampere |
| Answer» B. Tesla | |
| 12. |
When the length of the conductor in the current carrying conductor increases, what happens to the force in the conductor which is at right angles to the magnetic field? |
| A. | Increases |
| B. | Decreases |
| C. | Remains the same |
| D. | Becomes zero |
| Answer» B. Decreases | |
| 13. |
When the current in the current carrying conductor increases, what happens to the force in the conductor which is at right angles to the magnetic field? |
| A. | Increases |
| B. | Decreases |
| C. | Remains the same |
| D. | Becomes zero |
| Answer» B. Decreases | |
| 14. |
Which, among the following, is the correct expression for force in a current carrying conductor? |
| A. | F=Bi |
| B. | F=B<sup>2</sup>il |
| C. | F=Bil |
| D. | F=Bl<sup>2</sup> |
| Answer» D. F=Bl<sup>2</sup> | |