Question

(iii) We use ball barring in shafts of moter (give reason)​

Answer 1

Answer:

The purpose of a ball bearing is to reduce rotational friction and support radial and axial loads. ... In most applications, one race is stationary and the other is attached to the rotating assembly (e.g., a hub or shaft). As one of the bearing races rotates it causes the balls to rotate as well.

Explanation:

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