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Machine Design

Machine Design
The diameter of knuckle pin in a knuckle joint is usually taken as (where d = Diameter of the rod)

0.8 d
d
1.2 d
0.5 d

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Machine Design
The endurance limit of a material with finished surface in comparison to rough surface is

More
Same
Less
More or less depending on quantum of load

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

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

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Machine Design
A screw is specified by its

Pitch diameter
Minor diameter
Major diameter
Pitch

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Machine Design
The backlash for spur gears depends upon

Tooth profile
Both module and pitch line velocity
Pitch line velocity
Module

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Machine Design
The strength of the unriveted plate (P) per pitch length is equal to

p.t.σt
p.d.σt
(p - d) σt
(p - d) t.σt

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