MCQOPTIONS
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MCQOPTIONS
This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Machines knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A physical system of electromechanical energy conversion, consists of a stationary part creating a magnetic field with electric energy input, and a moving part giving mechanical energy output. If the movable part is kept fixed, the entire electrical energy input will be _______ |
| A. | stored in the magnetic field |
| B. | stored in the electric field |
| C. | divided equally between the magnetic and electric fields |
| D. | zero |
| Answer» B. stored in the electric field | |
| 2. |
The developed electromagnetic force and/or torque in electromechanical energy conversion system, acts in such a direction that tends to ___________ |
| A. | increase the stored energy at constant mmf |
| B. | decrease the stored energy at constant mmf |
| C. | decrease the co-energy at constant mmf |
| D. | increase the stored energy at constant flux |
| Answer» C. decrease the co-energy at constant mmf | |
| 3. |
The energy storing capacity of magnetic field is about ________ times greater than that of electric field. |
| A. | 50,000 |
| B. | 25,000 |
| C. | 10,000 |
| D. | 40,000 |
| Answer» C. 10,000 | |
| 4. |
What is the coupling field used between the electrical and mechanical systems in energy conversion devices? |
| A. | Magnetic field |
| B. | Electric field |
| C. | Magnetic field or Electric field |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |