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Machine Design

Machine Design
A rivet is specified by

Shank diameter
Type of head
Length of rivet
Length of tail

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

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

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Machine Design
The connecting rod bolts are tightened up so that tightening stress

Approaches yield point
Is 50% of yield point
Is about yield point divided by safety factor
Is just sufficient to hold parts together

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

2 d
3 d
4 d
5 d

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Machine Design
The taper on key is given on

On both sides
Bottom side only
Top side only
Any side

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Machine Design
In a flat belt drive, if the slip between the driver and belt is 1 %, between the belt and follower is 3% and driver and follower pulley diameters are equal, then velocity ratio of the drive will be

0.98
0.99
0.96
0.97

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