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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)

d
0.5 d
1.2 d
0.8 d

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Machine Design
In cyclic loading, stress concentration is more serious in

Ductile materials
Brittle as well as ductile materials
Elastic materials
Brittle materials

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Machine Design
An Involute pinion and gear are in mesh. If both have the same size of addendum, then there will be interference between the

Tip of the gear and flank of pinion
Tip of the pinion and flank of gear
Flanks of both gear and pinion
Tip of both gear and pinion

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Machine Design
An open coiled helical compression spring 'A' of mean diameter 50 mm is subjected to an axial load ‘W’. Another spring 'B' of mean diameter 25 mm is similar to spring 'A' in all respects. The deflection of spring 'B' will be __________ as compared to spring 'A'.

One-eighth
One-fourth
One-half
Double

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

(p - d) t.σt
p.d.σt
p.t.σt
(p - d) σt

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

Decreases linearly
Increases exponentially
Remains same
Increases linearly

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