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Machine Design

Machine Design
If two springs are in parallel then their overall stiffness will be

Double
None of these
Half
Same

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Machine Design
Stress concentration factor is defined as the ratio of

Maximum stress to the endurance limit
Nominal stress to the maximum stress
Maximum stress to the nominal stress
Nominal stress to the endurance limit

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Machine Design
Taper usually provided on cotter is

1 in 10
1 in 24
1 in 5
1 in 40

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Machine Design
All stresses produced in a belt are

Shear stresses
Tensile stresses
Both tensile and compressive stresses
Compressive stresses

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Machine Design
The relation between the pitch of the chain (p) and pitch circle diameter of the sprocket (D) is given by (where T = Number of teeth on the sprocket)

p = D sin (120°/T)
p = D sin (180°/T)
p = D sin (90°/T)
p = D sin (360°/T)

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Machine Design
The cold working of metals is carried out __________ the recrystallization temperature.

None of these
Above
At
Below

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