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Machine Design

Machine Design
Rankine's theory is used for

Ductile materials
Brittle materials
Plastic materials
Elastic materials

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Machine Design
Which one of the following is a positive drive?

Crossed flat belt drive
Rope drive
Chain drive
V-belt drive

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Machine Design
When a closely coiled helical spring is subjected to a couple about its axis, the stress induced in the wire material of the spring is

Direct shear stress only
A combination of torsional shear stress and bending
A combination of bending stress and direct shear stress
Bending stress only

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Machine Design
The stress in the threaded part of the bolt will be __________ as compared to the shank.

Lower
Higher
Same
None of these

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Machine Design
Applications in which stresses are encountered in one direction only uses following type of threads

Buttress
Acme
Metric
Square

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Machine Design
Allen bolts are

Used in aircraft application
Self locking bolts
Designed for shock load
Provided with hexagonal depression in head

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