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Machine Design

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

p.t.σc
p.d.σc
n.d.t.σc
(p - d) t.σc

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Machine Design
Ball bearing type screws are found in following application

Crane
Aeroplane engines
Steering mechanism
Screw jack

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Machine Design
According to Indian standards, total numbers of fundamental deviations are

10
15
20
25

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Machine Design
In designing a connecting rod, it is considered like __________ for buckling about Y-axis.

One end fixed and the other end hinged
One end fixed and the other end free
Both ends fixed
Both ends hinged

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Machine Design
The included angle for the V-belt is usually

10°-20°
40°-60°
60°-80°
30°-40°

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Machine Design
A closely coiled helical spring is acted upon by an axial force. The maximum shear stress developed in the spring is τ. The half of the length of the spring if cut off and the remaining spring is acted upon by the same axial force. The maximum shear stress in the spring in new condition will be

τ/2
4 τ
2 τ
τ

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