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Machine Design

Machine Design
The shear modulus of resilience is proportional to

(Shear stress)⁴
(Shear stress)3
Shear stress
(Shear stress)²

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Machine Design
The piston pin bearings in heavy duty diesel engines are

Spherical roller bearings
Needle roller bearings
Tapered roller bearings
Cylindrical roller bearings

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Machine Design
The period during which the cam follower remains at rest, when cam moves, is known as

Dwell period
Constant period
Fixed period
Idle period

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Machine Design
According to I.B.R., the efficiency of a double riveted butt joint with double cover straps of equal width should be

70 to 83%
45 to 60%
80 to 90%
63 to 70%

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Machine Design
For general industrial machinery, the ratio of the length of journal to its diameter is taken as

3 to 5
5 to 10
0.5 to 1
1 to 2

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Machine Design
A locking device extensively used in marine type connecting rod ends is a

Castle nut
Jam nut
Ring nut
Sawn nut

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