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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)

0.5 d
1.2 d
0.8 d
d

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Machine Design
The cam follower extensively used in aircraft engines is

Spherical faced follower
Knife edge follower
Flat faced follower
Roller follower

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Machine Design
The notch angle of the Izod impact test specimen is

30°
20°
45°
10°

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Machine Design
A screw will be self locking, if

Friction angle is less than helix angle
Efficiency of screw is 100%
Friction angle is more than helix angle
Friction angle is equal to helix angle

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Machine Design
The most important dimension in the design of a nut is

Outside diameter
Inside diameter
Pitch diameter
Height

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Machine Design
The pipe joint mostly used for pipes carrying water at low pressures is

Socket joint
Nipple joint
Spigot and socket joint
Union joint

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