Machine Design
In a boundary lubricated bearing, there is a __________ of lubricant between the journal and the bearing.

None of these
Thin film
Either A or B
Thick film

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Machine Design
A bolt of uniform strength can be developed by

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

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