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Machine Design

Machine Design
The endurance limit for a mirror polished material will be __________ as compared to unpolished material.

None of these
More
Less
Same

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Machine Design
For steel, the ultimate strength in shear as compared to ultimate strength in tension is

43832
43834
43864
43833

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Machine Design
The rated life of a bearing varies

Directly as load
Inversely as square of load
Inversely as fourth power of load
Inversely as cube of load

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Machine Design
A steel containing 0.8% carbon is known as

Hypo-eutectoid steel
Eutectoid steel
Hypereutectoid steel
None of these

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Machine Design
The maximum normal stress theory is used for

Ductile materials
Brittle materials
Plastic materials
Non-ferrous materials

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Machine Design
In Vickers hardness testing, the pyramid indentor apex is

40°
136°
152°
122°

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