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Machine Design

Machine Design
A cotter joint is used to connect two __________ rods.

Co-axial
Perpendicular
Parallel
None of these

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Machine Design
In nitrated parts, the origins of the fatigue cracks will occur at

Within the core
None of these
Just below the surface
Surface

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Machine Design
The process extensively used for making bolts and nuts is

Hot piercing
Extrusion
Cold heading
Cold peening

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Machine Design
For steel, the ultimate strength in shear as compared to ultimate strength in tension is

43864
43834
43832
43833

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Machine Design
The gears are termed as medium velocity gears, if their peripheral velocity is

1-3 m/s
30-50 m/s
3-15 m/s
15-30 m/s

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Machine Design
If P1 and P2 are the tight and slack side tensions in the belt, then the initial tension Pi (according to Barth) will be equal to (Where, Pc is centrifugal tension)

P1 + P2
[⅟₂ × (P1 + P2)] + Pc
[(√P1 + √P2)/2]²
⅟₂× (P1 + P2)

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