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Machine Design

Machine Design
According to Indian standards, total numbers of tolerance grades are

12
8
18
20

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Machine Design
In radial cams, the follower moves

In any direction irrespective of cam axis
In a direction parallel to the cam axis
Along the cam axis
In a direction perpendicular to the cam axis

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

n.d.t.σc
(p - d) t.σc
p.d.σc
p.t.σc

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Machine Design
A shaft is subjected to a maximum bending stress of 80 N/mm² and maximum shearing stress equal to 30 N/mm² at a particular section. If the yield point in tension of the material is 280 N/mm² and the maximum shear stress theory of failure is used, then the factor of safety obtained will be

2.5
3.0
3.5
2.8

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Machine Design
When a closely coiled helical spring is subjected to a couple about its axis, the stress induced in the wire material of the spring is

A combination of bending stress and direct shear stress
Bending stress only
Direct shear stress only
A combination of torsional shear stress and bending

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Machine Design
The diameter of the rivet hole is usually __________ the nominal diameter of the rivet.

None of these
Less than
More than
Equal to

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