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Machine Design

Machine Design
The number of slots in a 25 mm castle nut is

6
8
4
2

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Machine Design
In worm gears, the pressure angle is __________ the angle between two inclined faces in axial plane.

None of these
Twice
Half
Thrice

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Machine Design
The expression 0.175 - 0.841/T is the Lewis form factor for

None of these
14½° composite and full depth involute system
20° full depth involute system
20° stub system

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Machine Design
Guest's theory is used for

Elastic materials
Plastic materials
Ductile materials
Brittle materials

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

0.8 d
0.5 d
d
1.2 d

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Machine Design
According to Indian standard specifications, plain carbon steel designated by 40C8 contains carbon

0.20 to 0.40%
0.35 to 0.45%
None of these
0.40 to 0.60%

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