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Machine Design

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

n.d.t.σc
(p - d) t.σc
p.t.σc
p.d.σc

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Machine Design
Failure of a material is called fatigue when it fails

Below the elastic limit
Below the yield point
At the yield point
At the elastic limit

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Machine Design
In designing a sleeve coupling, length of the sleeve is taken as (where d = Diameter of the shaft)

d + 17 mm
2d + 13 mm
2d + 20 mm
3.5 d

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Machine Design
A connecting rod subjected to an axial load may buckle with

Y-axis as neutral axis
X-axis or Y-axis as neutral axis
X-axis as neutral axis
Z-axis

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Machine Design
The circumferential and longitudinal strains in a cylindrical boiler under internal steam pressure are εc and εl respectively. The change in volume of the boiler cylinder per unit volume will be

εc + 2εl
εc² + εl
2εc + εl
εc + εl²

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Machine Design
Which of the following key is preferred for the condition when a large amount of impact type torque is to be transmitted in both direction of rotation?

Tangent key
Woodruff key
Feather key
Gib-head key

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