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Machine Design

Machine Design
In a marine flange coupling, the thickness of flange is taken as

3d/4
d/4
d/2
d/3

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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
Provides much greater time for remedial action before failure
Is less flexible
Has a much smaller load carrying capacity

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Machine Design
If d is the normal diameter of a bolt in mm, then the initial tension in kg in a bolt used for making a fluid tight joint as for steam engine cover joint is calculated by the relation

168 d
151 d
124 d
138 d

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Machine Design
The size of a cam depends upon

Base circle
Pitch curve
Pitch circle
Prime circle

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Machine Design
When spring index increases, the value of Wahl's stress factor

Decreases linearly
Remains same
Increases linearly
Increases exponentially

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Machine Design
The shear modulus of resilience is proportional to

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

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