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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
In standard taper roller bearings, the angle of taper of outer raceway is

25°
5°
8°
15°

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Machine Design
When a material is subjected to fatigue loading, the ratio of the endurance limit to the ultimate tensile strength is

0.35
0.2
0.5
0.65

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Machine Design
The cam follower extensively used in aircraft engines is

Roller follower
Spherical faced follower
Knife edge follower
Flat faced follower

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Machine Design
The steel pulleys are __________ in weight than cast iron pulleys of the same capacity.

Lighter
Moderate
None of these
Heavier

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Machine Design
The lead angle of a worm is 22.5°. Its helix angle will be

45°
67.5°
90°
22.5°

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