Machine Design
The acme threads are usually found on

Screw cutting lathes
Feed mechanism of machine tools
Spindles of bench vices
Railway carriage couplings

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Machine Design
In case of V belt drive

The belt should touch the bottom of groove in the pulley
The belt should not touch the sides of groove in the pulley
None of these
The belt should not touch the bottom of groove in the pulley

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Machine Design
In oilness bearings

Grease required to be applied after some intervals
The oil film is maintained by supplying oil under pressure
Do not require external supply of lubricant
The oil film pressure is generated only by the rotation of the journal

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