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Machine Design

Machine Design
Belt slip may occur due to

Driving pulley too small
All of these
Heavy load
Loose belt

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Machine Design
Basic shaft is one

Whose upper deviation is zero
Whose lower deviation is zero
Does not exist
Whose lower as well as upper deviations are zero

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Machine Design
In helical gears, the distance parallel to the axis, between similar faces of adjacent teeth, is called

Diametral pitch
Module
Axial pitch
Normal pitch

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Machine Design
If shearing stress in nut is half the tensile stress in a bolt, then nut length should be equal to

1.25 × diameter of bolt
1.5 × diameter of bolt
Diameter of bolt
0.75 × diameter of bolt

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Machine Design
In static loading, stress concentration is more serious in

Ductile materials
Brittle materials
Elastic materials
Brittle as well as ductile materials

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Machine Design
The included angle for the V-belt is usually

60°-80°
10°-20°
30°-40°
40°-60°

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