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Machine Design

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

n.d.t.σc
p.t.σc
p.d.σc
(p - d) t.σc

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Machine Design
In a marine flange coupling, the thickness of flange is taken as

d/3
d/4
d/2
3d/4

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Machine Design
According to Indian standards, a bolt thread of 6 mm size of coarse pitch and with allowance on the threads and normal tolerance grade is designated as

M8 - 6d
M6
M6 - 8d
M8

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Machine Design
Antifriction bearings are

Sleeve bearings
Hydrodynamic bearings
Thin lubricated bearings
None of these

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Machine Design
For longitudinal joint in boilers, the type of joint used is

Any one of the above
Butt joint with double cover plate
Butt joint with single cover plate
Lap joint with one ring overlapping the other

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

Within the core
Surface
None of these
Just below the surface

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