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Machine Design

Machine Design
Rankine's theory is used for

Brittle materials
Elastic materials
Plastic materials
Ductile materials

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Machine Design
A screw is said to be over hauling screw, if the

Efficiency of screw is 100%
Friction angle is less than helix angle
Friction angle is more than helix angle
Friction angle is equal to helix angle

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Machine Design
A V-belt designated as B 4430 LP has

4430 mm as centre distance between pulleys
4430 mm as diameter of small pulley
4430 mm as nominal pitch length
4430 mm as diameter of large pulley

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Machine Design
The root angle of a bevel gear is equal to

Pitch angle - addendum angle
Pitch angle + addendum angle
Pitch angle + dedendum angle
Pitch angle - dedendum angle

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Machine Design
The endurance or fatigue limit is defined as the maximum value of the stress which a polished standard specimen can withstand without failure, for infinite number of cycles, when subjected to

Dynamic load
Static as well as dynamic load
Completely reversed load
Static load

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Machine Design
Allen bolts are

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

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