Electrical Engineering XYZ MCQs
Which of the following statement regarding bearing usage is correct:
- Roller bearings for large machines
- Ball bearings for small machines
- Both of these
- None of these
Correct answer: 3. Both of these
Explanation:
The correct answer is: Both of these.
- Roller bearings are often preferred for large machines because they can handle heavier loads and provide better support for larger shafts. The cylindrical or tapered shape of the rollers distributes the load over a larger surface area, making them suitable for heavy-duty applications.
- Ball bearings, on the other hand, are commonly used in smaller machines. They are well-suited for applications with moderate loads and high-speed rotations. The smaller contact area of ball bearings allows them to operate efficiently in smaller machinery.