Machine Design
The rolling contact bearings are known as

Antifriction bearings
Thin lubricated bearings
Plastic bearings
Thick lubricated bearings

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Machine Design
When the speed of belt increases,

The power transmitted will decrease
The power transmitted will increase
The coefficient of friction between the belt and pulley increases
The coefficient of friction between the belt and pulley decreases

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Machine Design
A bolt of uniform strength can be developed by

Keeping the nominal diameter of threads equal to the diameter of unthreaded portion of the bolt
None of these
Keeping the core diameter smaller than the diameter of the unthreaded portion
Keeping the core diameter of threads equal to the diameter of unthreaded portion of the bolt

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