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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
0.8 d
1.2 d
0.5 d

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Machine Design
According to I.B.R., the efficiency of a double riveted butt joint with double cover straps of equal width should be

80 to 90%
70 to 83%
63 to 70%
45 to 60%

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Machine Design
The shear modulus of resilience is proportional to

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

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Machine Design
The usual clearance provided in hydrodynamic bearing per mm of diameter of shaft is

10 microns
1 micron
0.1 micron
0.01 micron

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Machine Design
The face angle of a bevel gear is equal to

Pitch angle - addendum angle
Pitch angle - dedendum angle
Pitch angle + dedendum angle
Pitch angle + addendum angle

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Machine Design
Cast iron pipes are mainly used

For conveying steam
All of these
In water and sewage systems
In pressure lubrication systems on prime movers

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