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Machine Design

Machine Design
In a marine flange coupling, the pitch circle diameter of bolts is taken as

1.2 d
2 d
1.6 d
2.5 d

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Machine Design
The strength of the unriveted plate (P) per pitch length is equal to

p.d.σt
(p - d) σt
p.t.σt
(p - d) t.σt

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Machine Design
Belt slip may occur due to

Loose belt
Heavy load
Driving pulley too small
All of these

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

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

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Machine Design
The cam follower extensively used in aircraft engines is

Flat faced follower
Knife edge follower
Spherical faced follower
Roller follower

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Machine Design
Factor of safety for fatigue loading is the ratio of

Elastic limit to the working stress
Elastic limit to the yield point
Endurance limit to the working stress
Young's modulus to the ultimate tensile strength

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