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Machine Design

Machine Design
The most important dimension in the design of a nut is

Height
Outside diameter
Pitch diameter
Inside diameter

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Machine Design
In a multiple V-belt drive, when a single belt is damaged, it is preferable to change the complete set in order to

Reduce slip
Reduce vibration
Ensure uniform loading
Ensure proper alignment

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Machine Design
The process which improves the machinability of steels, but lowers the hardness and tensile strength is

Full annealing
Process annealing
Spheroidising
Normalising

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Machine Design
Rankine's theory is used for

Elastic materials
Plastic materials
Ductile materials
Brittle materials

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Machine Design
The surface finish factor for a mirror polished material is

0.65
0.45
0.85
1

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Machine Design
The condition for maximum power transmission is that the maximum tension in the flat belt should be equal to(Where, Pc = tension in belt due to centrifugal force)

2 Pc
Pc/3
1 Pc
3 Pc

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