Machine Design
The speed of the sprocket reduces as the chain pitch __________ for a given number of teeth.

Decreases
Increases
None of these
Remain same

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Machine Design
Machine screws are

Similar to stud
Used to prevent relative motion between two parts
Slotted for a screw driver and generally used with a nut
Similar to small size tap bolts except that a greater variety of shapes of heads are available

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Machine Design
Elastic nut is a locking device in which

One small nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming
A slot is cut partly in middle of nut and then slot reduced by tightening a screw
Hard fibre or nylon cotter is recessed in the nut and becomes threaded as the nut is stewed on the bolt causing a tight grip
Through slots are made at top and a cotter pin is passed through these and a hole in the bolt, and cotter pin splitted and bent in reverse direction at other end

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Machine Design
A bolt

Is provided with pointed threads
Has a head on one end and a nut fitted to the other
Has both the ends threaded
Has head at one end and other end fits into a tapped hole in the other part to be joined

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