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Machine Design

Machine Design
The centre to centre distance between two consecutive rivets in a row, is called

Margin
Diagonal pitch
Pitch
Back pitch

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Machine Design
The speed of the sprocket reduces as the chain pitch __________ for a given number of teeth.

None of these
Increases
Decreases
Remain same

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Machine Design
If a shaft made from ductile material is subjected to combined bending and twisting moment, calculations based on which one of the following failure theories will give the most conservative value?

Maximum distortion energy theory
Maximum principal stress theory
Maximum shear stress theory
Maximum strain energy theory

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Machine Design
In order to withstand resistance to wear, the best profile of gear is

14½° full depth involute tooth
20° involute stub tooth
20° full depth involute tooth
14½° stub tooth

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Machine Design
Stress concentration in cyclic loading is more serious in

Depends on other factors
Equally serious in both cases
Ductile materials
Brittle materials

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Machine Design
The value of stress concentration factor depends upon

Material of the part
None of these
Geometry of the part
Material and geometry of the part

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