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Machine Design

Machine Design
In designing a flange coupling, the pitch circle diameter of bolts is taken as (where d = Diameter of the shaft)

4 d
5 d
2 d
3 d

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Machine Design
The shock absorbing capacity of a bolt can be increased by

Tightening it properly
Increasing shank diameter
Making shank diameter equal to core diameter of thread
Grinding the shank

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Machine Design
When compared to the rod of the same diameter and material, a wire rope

Provides much greater time for remedial action before failure
Does not provide much warning before failure
Is less flexible
Has a much smaller load carrying capacity

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

180°
270°
120°
360°

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

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

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Machine Design
A column of length l is fixed at both ends. The equivalent length of the column is

l
l/√2
l/2
2 l

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