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Machine Design

Machine Design
Guest's theory of failure is applicable for following type of materials

Brittle
Plastic
Elastic
Ductile

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Machine Design
In a horizontal flat belt drive, it is customary to use

Idler pulley
Bottom side of belt as slack side
Top side of belt as slack side
None of these

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Machine Design
The initial tension (in newtons) in a bolt used for making a fluid tight joint like steam engine cover joints, is calculated by the relation (where d = Nominal diameter of bolt in mm)

1680 d
2840 d
1420 d
2080 d

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Machine Design
In designing thick cylinders, the equation used is

Lame's equation
Birnie's equation
Clavarinos' equation
All of these

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Machine Design
Two rigid plates are clamped by means of bolt and nut with an initial force F. After tightening, a separating force P (P < F) is applied to the lower plate, which in turn acts on the nut. The tension in the both after this is

P
F
F.P
F + P

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Machine Design
The cam follower extensively used in aircraft engines is

Roller follower
Knife edge follower
Flat faced follower
Spherical faced follower

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