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Machine Design

Machine Design
The efficiency of a riveted joint is equal to

Least of Pt, Ps and Pc/P
Pt /P
Pc /P
Ps /P

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Machine Design
When a circular beam of diameter d is subjected to a shear force F, the maximum shear stress induced will be

4F/ πd²
16F/ 3πd²
6F/ πd²
8F/ πd²

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Machine Design
For a shaft diameter of 100 mm, the number of bolts in a flange coupling should be

10
6
4
8

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Machine Design
A screw is said to be over hauling screw, if its efficiency is

Less than 50%
None of these
More than 50%
Equal to 50%

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Machine Design
The washer is generally specified by its

Thickness
Outer diameter
Mean diameter
Hole diameter

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Machine Design
In a full journal bearing, the angle of contact of the bearing with the journal is

120°
180°
360°
270°

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