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Machine Design

Machine Design
Crushing resistance required to crush the rivet per pitch length is

(p - d) t.σc
p.d.σc
p.t.σc
n.d.t.σc

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Machine Design
A sliding bearing which can support steady loads without any relative motion between the journal and the bearing, is called

Zero film bearing
Hydrostatic lubricated bearing
Boundary lubricated bearing
Hydrodynamic lubricated bearing

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Machine Design
A hot short metal is

Brittle when hot
Brittle under all conditions
Ductile at high temperature
Brittle when cold

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Machine Design
The notch sensitivity q is expressed in terms of fatigue stress concentration factor Kf and theoretical stress concentration factor Kt as

(Kt - 1)/ (Kf - 1)
(Kf + 1)/ (Kt + 1)
(Kt + 1)/ (Kf + 1)
(Kf - 1)/ (Kt - 1)

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Machine Design
The ultimate strength of steel in tension in comparison to shear is in the ratio of

0.085416666666667
0.084027777777778
0.042361111111111
0.12638888888889

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Machine Design
The edges of the plates for cylindrical vessels are usually bevelled to an angle of 80° for

Fullering and caulking
Safety
Reducing stress concentration
Ease of manufacture

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