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. |
The equation for flux per pole =4/PBplr, is valid for _____________ |
| A. | for salient pole rotor only |
| B. | for cylindrical pole rotor only |
| C. | for both cylindrical and salient pole rotor |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 2. |
In a 4 pole machine, what is the flux per pole produced, if the armature length is l and radius is r and Bp is peak value of sinusoidal flux? |
| A. | 4B<sub>p</sub>lr |
| B. | 2B<sub>p</sub>lr |
| C. | B<sub>p</sub>lr |
| D. | B<sub>p</sub>lr/2 |
| Answer» D. B<sub>p</sub>lr/2 | |
| 3. |
A chording angle is defined as the angle by which coil span departs from __________ |
| A. | 90 electrical space degrees |
| B. | 180 electrical space degrees |
| C. | 360 electrical space degrees |
| D. | all of the mentioned |
| Answer» C. 360 electrical space degrees | |
| 4. |
What is the relation between , angular speed in electrical radians per second and m , angular speed in mechanical radians per second, for a P-pole machine? |
| A. | = 2/P <sub>m</sub> |
| B. | = 4/P <sub>m</sub> |
| C. | <sub>m</sub> = P/2 |
| D. | = P/2 <sub>m</sub> |
| Answer» E. | |