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Machine Design

Machine Design
The suitable material for belt used in flour mill is

Leather
Canvas or cotton duck
Rubber
Balata gum

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Machine Design
For a shaft diameter of 100 mm, the number of bolts in a flange coupling should be

8
6
10
4

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Machine Design
For a square key made of mild steel, the shear and crushing strength are related as

Shear strength is greater than crushing strength
Shear strength is equal to crushing strength
Shear strength is less than crushing strength
None of these

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Machine Design
If d is the normal diameter of a bolt in mm, then the initial tension in kg in a bolt used for making a fluid tight joint as for steam engine cover joint is calculated by the relation

151 d
168 d
124 d
138 d

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Machine Design
The temperature at which the new grains are formed in the metal is known as

None of these
Upper critical temperature
Lower critical temperature
Recrystallization temperature

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Machine Design
The cam follower generally used in automobile engines is

Flat faced follower
Knife edge follower
Roller follower
Spherical faced follower

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