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Machine Design

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

Plastic
Brittle
Elastic
Ductile

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Machine Design
Shaft coupling is used in machinery to

Introduce protection against over loads
All of these
Reduce the transmission of shock loads
Introduce mechanical flexibility

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Machine Design
Oil in journal bearing should be applied at the point where load is

Nil or lightest
Maximum
Average
Any one of the above

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Machine Design
The belt slip occurs due to

Driving pulley too small
Any one of the above
Heavy load
Loose belt

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Machine Design
A universal coupling is used to connect two shafts

Which are not in exact alignment
Which are perfectly aligned
Have lateral misalignment
Whose axes intersect at a small angle

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Machine Design
The rated life of a bearing varies

Inversely as square of load
Inversely as cube of load
Directly as load
Inversely as fourth power of load

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