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Machine Design

Machine Design
The constant factor in case of R10 series of preferred numbers is

1.26
1.06
1.58
1.12

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Machine Design
The material generally used for aircraft components is

Stainless steel
High speed steel
Aluminium
Mild steel

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Machine Design
The power transmitted by the belt drive can be increased by

Dressing the belt to increase the coefficient of friction
Increasing the initial tension in the belt
Increasing wrap angle by using idler pulley
All of these

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

Elastic
Ductile
Plastic
Brittle

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Machine Design
In nitrated parts, the origins of the fatigue cracks will occur at

Surface
Just below the surface
Within the core
None of these

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Machine Design
The period during which the cam follower remains at rest, when cam moves, is known as

Idle period
Constant period
Fixed period
Dwell period

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