MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
How can electromagnetic damping be increased? |
| A. | Increasing the magnetic density |
| B. | Reduce viscosity |
| C. | Winding the coil on the aluminum frame |
| D. | Increase the temperature of the coil |
| Answer» D. Increase the temperature of the coil | |
| 2. |
Identify the law which is used to find out the direction of eddy currents. |
| A. | Lenz’s law |
| B. | Faraday’s law |
| C. | Ampere circuital law |
| D. | Maxwell’s law |
| Answer» B. Faraday’s law | |
| 3. |
‘X’ set up in the drum exert a torque on the drum to stop the train. Identify X. |
| A. | Induction |
| B. | Eddy currents |
| C. | Electromagnetic oscillations |
| D. | Air pressure |
| Answer» C. Electromagnetic oscillations | |
| 4. |
Eddy currents may not be suitable for electrostatic shielding. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
Eddy currents can be used to heat localized tissues of the human body. What is this branch of science referred to as? |
| A. | Inductology |
| B. | Eddy dynamics |
| C. | Inductothermy |
| D. | Eddy mechanics |
| Answer» D. Eddy mechanics | |
| 6. |
What is measured by the eddy currents induced in energy meters? |
| A. | Electric potential |
| B. | Electric induction |
| C. | Electric power |
| D. | Electric energy |
| Answer» E. | |
| 7. |
Which of the following is not an application of eddy currents? |
| A. | Ammeter |
| B. | Dead beat galvanometer |
| C. | Speedometer |
| D. | Energy meters |
| Answer» B. Dead beat galvanometer | |
| 8. |
Identify the type of commercial motor which works as a consequence of eddy currents. |
| A. | Compressors |
| B. | Induction motors |
| C. | Turbines |
| D. | Hydropowered motors |
| Answer» C. Turbines | |
| 9. |
Name the current induced in solid metallic masses when the magnetic flux threading through them changes. |
| A. | Ampere currents |
| B. | Faraday currents |
| C. | Eddy currents |
| D. | Solenoidal currents |
| Answer» D. Solenoidal currents | |