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Machine Design

Machine Design
A bench vice has following type of threads

Buttress
Acme
Metric
Square

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Machine Design
Which process will increase the fatigue duration of parts?

De-carburisation
Shot-peening
Finishing and polishing
Electroplating

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Machine Design
Which of the following statement is correct, for two shafts connected in parallel?

Shear stress in each shaft is the same
Torsional stiffness of each shaft is the same
Torque in each shaft is the same
Angle of twist of each shaft is the same

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Machine Design
The resilience of a bolt may be increased by

Increasing its shank diameter
Decreasing its length
Increasing its length
Decreasing its shank diameter

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Machine Design
In testing a material for endurance strength, it is subjected to

Completely reversed load
Static load
Impact load
Dynamic load

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Machine Design
In designing a sleeve coupling, outer diameter of the sleeve is taken as (where d = Diameter of the shaft)

3.5d
d + 17 mm
2d + 13 mm
2d + 20 mm

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