Preloading is recommended for bearings. – McqOptions

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1.	Preloading is recommended for bearings.
A.	True
B.	False
Answer» B. False

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Preloading is recommended for bearings.
Moment of normal force and frictional forces about the pivot axis are 640000N-mm and 250000N-mm respectively. If force acts at a distance of 190mm from the pivoted point, calculate the actuating force.
In internally expanding brake, a large actuating force produces a small braking torque and hence this brake isn t used generally.
The intensity of normal pressure between the friction lining and the brake drum at any point is proportional to square of the vertical distance from the pivot.