Electrical Engineering XYZ MCQs
Which of the following is an effect of armature reaction:
- Increase the maintenance and repair
- Increases the design cost
- Increase the iron loss
- All of these
Correct answer: 4. All of these
Explanation:
Effects of armature reaction include:
- Increase the maintenance and repair: Armature reaction can lead to additional mechanical and electrical stresses on the components of a DC machine, potentially increasing wear and the need for maintenance and repairs over time.
- Increases the design cost: As mentioned earlier, the distortion in the magnetic field due to armature reaction may require more complex design considerations, which can increase the overall design cost of the machine.
- Increase the iron loss: Armature reaction can contribute to changes in the magnetic field distribution, leading to increased iron losses in the core of the machine. This results in higher energy losses in the form of heat.