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Machine Design

Machine Design
In a marine flange coupling, the pitch circle diameter of bolts is taken as

2.5 d
1.6 d
2 d
1.2 d

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Machine Design
The groove angle of the pulley for rope drive is usually

45°
60°
35°
20°

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Machine Design
I.S. specifies following total number of grades of tolerances

18
22
16
20

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Machine Design
A locking device extensively used in automobile industry is a

Castle nut
Jam nut
Ring nut
Sawn nut

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Machine Design
The resultant axial load on a bolt depends upon

Initial tension due to tightening of the bolt
External load applied
Relative elastic yielding of the bolt and the connected members
All of these

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Machine Design
Taper on the cotter and slot is provided

On none of the sides
May be provided anywhere
On one side only
On both the sides

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