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Machine Design

Machine Design
Rankine's theory of failure is applicable for following type of materials

Ductile
Plastic
Brittle
Elastic

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Machine Design
For standard coarse threads of nut, the threads will be as strong in failure by shear as the bolt in tension, if the height of nut (h) is approximately

0.7 times
0.6 times
0.4 times
0.8 times

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Machine Design
Tensile strength of a mild steel specimen can be roughly predicted from following hardness test

Vickers
Brinell
None of these
Rockwell

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Machine Design
A type of brake commonly used in motor cars is a

Band brake
Band and block brake
Shoe brake
Internal expanding brake

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Machine Design
A machine part subjected to _________ is called a strut.

An axial compressive force
Any one of these
An axial tensile force
A tangential force

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Machine Design
The rolling contact bearings are known as

Thick lubricated bearings
Antifriction bearings
Plastic bearings
Thin lubricated bearings

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