MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Core of electromagnets are made up of ____________ |
| A. | Diamagnetic Material |
| B. | Paramagnetic Material |
| C. | Ferromagnetic Material |
| D. | Plastic |
| Answer» D. Plastic | |
| 2. |
If the relative permeability of material lies between zero and one, the material is ____________ |
| A. | Diamagnetic Material |
| B. | Paramagnetic Material |
| C. | Ferromagnetic Material |
| D. | Insufficient Information |
| Answer» B. Paramagnetic Material | |
| 3. |
If the magnetic meridian of a certain place, the horizontal component of the earth s magnetic field is 0.26 G and the dip angle is 60 , what is the magnetic field of earth at this location? |
| A. | 0.52 G |
| B. | 0.46 G |
| C. | 0.78 G |
| D. | 0.94 G |
| Answer» B. 0.46 G | |
| 4. |
The earth s magnetic field at the equator is approximately 0.4 G. What is the earth s dipole moment? |
| A. | 0.8 X 10<sup>23</sup> Am<sup>2</sup> |
| B. | 1.0 X 10<sup>23</sup> Am<sup>2</sup> |
| C. | 1.2 X 10<sup>23</sup> Am<sup>2</sup> |
| D. | 1.5 X 10<sup>23</sup> Am<sup>2</sup> |
| Answer» C. 1.2 X 10<sup>23</sup> Am<sup>2</sup> | |
| 5. |
If for a material, the magnetization is 8 X 105 A/m and the relative permeability is 200, what is the Magnetic Intensity? |
| A. | 4.89 X 10<sup>3</sup> A/m |
| B. | 4.64 X 10<sup>3</sup> A/m |
| C. | 4.43 X 10<sup>3</sup> A/m |
| D. | 4.02 X 10<sup>3</sup> A/m |
| Answer» E. | |
| 6. |
A solenoid has a core of a material with relative permeability 400. The windings are insulated from the core and the magnetic Intensity is 1500 A/m. What is the Magnetization of the core? |
| A. | 0.25 T |
| B. | 0.50 T |
| C. | 0.75 T |
| D. | 1.00 T |
| Answer» D. 1.00 T | |
| 7. |
A solenoid carry a current of 2A. If the number of turns is 1000 per meter, what is the Magnetic Intensity? |
| A. | 1000 A/m |
| B. | 2000 A/m |
| C. | 3000 A/m |
| D. | 4000 A/m |
| Answer» C. 3000 A/m | |
| 8. |
For a paramagnetic material, does not depend on Temperature. |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
The dimensions of are ____________ |
| A. | [AL] |
| B. | [AL<sup>2</sup>T<sup>-1</sup>] |
| C. | [AM<sup>2</sup>L<sup>4</sup>T] |
| D. | Dimensionless |
| Answer» E. | |
| 10. |
How is the magnetic field, B, related to Magnetization, M? |
| A. | B M |
| B. | B 1/M |
| C. | B M<sup>2</sup> |
| D. | B 1/M<sup>2</sup> |
| Answer» B. B 1/M | |
| 11. |
In case of diamagnetic materials, M and H are opposite in direction. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
Where would the declination be greater? |
| A. | India |
| B. | Africa |
| C. | Egypt |
| D. | Arctic |
| Answer» E. | |
| 13. |
The vertical plane containing the earth s axis of rotation is called as _____________ |
| A. | Geographic meridian |
| B. | Magnetic Meridian |
| C. | Magnetic Declination |
| D. | Prime Meridian |
| Answer» B. Magnetic Meridian | |
| 14. |
If a material is paramagnetic, what shall be the value of ? |
| A. | Negative |
| B. | Small and positive |
| C. | Large and Positive |
| D. | Depends on other factors |
| Answer» C. Large and Positive | |