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Machine Design

Machine Design
In designing a flange coupling, the pitch circle diameter of bolts is taken as (where d = Diameter of the shaft)

5 d
3 d
4 d
2 d

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Machine Design
In unilateral system of tolerance, the tolerance is allowed on

Both sides of the nominal size
Both sides of the actual size
One side of the actual size
One side of the nominal size

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Machine Design
The design calculations for members subject to fluctuating loads with the same factor of safety, yield the most conservative estimates when using

Gerber relation
None of these
Soderberg relation
Goodman relation

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Machine Design
Which is positive drive?

V belt drive
Flat belt drive
Timing belt
Crossed belt drive

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Machine Design
If a material fails below its yield point, failure would be due to

Sudden loading
Fatigue
Creep
Straining

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Machine Design
The resultant axial load on a bolt depends upon

Initial tension due to tightening of the bolt
All of these
Relative elastic yielding of the bolt and the connected members
External load applied

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