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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)

1.2 d
0.8 d
0.5 d
d

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Machine Design
The wire ropes make contact at

Sides of groove of the pulley
Sides and bottom of groove of the pulley
Bottom of groove of the pulley
Anywhere in the groove of the pulley

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Machine Design
The resultant axial load on a bolt depends on

External load applied
Relative elastic yielding (springness) of the bolt and the connected member
All of these
Initial tension

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Machine Design
According to maximum normal stress theory, the maximum normal stress in the shaft is

(1/2) × [σ + √(σ² × 4τ²)]
√(σ² × 4τ²)
(1/2) × √(σ² × 4τ²)
σ + √(σ² × 4τ²)

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Machine Design
Tensile strength of a mild steel specimen can be roughly predicted from following hardness test

Brinell
None of these
Rockwell
Vickers

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Machine Design
Oil in journal bearing should be applied at the point where load is

Maximum
Any one of the above
Nil or lightest
Average

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