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Machine Design

Machine Design
The suitable material for belt in agricultural machinery is

Leather
Balata gum
Rubber
Cotton duck

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Machine Design
According to Unwin's formula, the relation between the diameter of rivet hole (d) and the thickness of plate (t) is given by (where d and t are in mm)

d = √t
d = 6√t
d = 2√t
d = 1.6√t

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Machine Design
The constant factor in case of R10 series of preferred numbers is

1.12
1.06
1.26
1.58

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Machine Design
Brittle coating technique is used for

Experimental stress analysis
Protecting metal against corrosion
Determining brittleness
Protecting metal against wear and tear

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Machine Design
The cam follower extensively used in aircraft engines is

Knife edge follower
Roller follower
Spherical faced follower
Flat faced follower

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

Union joint
Nipple joint
Spigot and socket joint
Socket joint

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