Q. Ball-bearings are (Solved)
1. Used up to 75 kW motors
2. Of long life and low friction loss
3. Costlier and noisy particularly at high speed motor
4. All of the above
- d. All of the above
1. Used up to 75 kW motors
2. Of long life and low friction loss
3. Costlier and noisy particularly at high speed motor
4. All of the above