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Machine Design

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

Brittle
Ductile
Plastic
Elastic

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Machine Design
Basic shaft is one

Does not exist
Whose lower as well as upper deviations are zero
Whose upper deviation is zero
Whose lower deviation is zero

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Machine Design
If threads on a bolt are left hand, threads on nut will be

Right hand with same pitch
Left hand with same pitch
Could be left or right hand
Right hand with fine pitch

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Machine Design
The process which improves the machinability of steels, but lowers the hardness and tensile strength is

Full annealing
Spheroidising
Normalising
Process annealing

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Machine Design
All stresses produced in a belt are

Tensile stresses
Both tensile and compressive stresses
Shear stresses
Compressive stresses

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Machine Design
The bending stress in a curved beam is

None of these
Zero at the centroidal axis
Zero at the point other than centroidal axis
Maximum at the neutral axis

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