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1.Discuss the possible sources of errors (at least two) in Brinell hardness measurements. 2.why is it necessary...

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Mechanical Engineering

1.Discuss the possible sources oferrors (at least two) in Brinell hardness measurements.

2.why is it necessary to maintain P /D2 ratio of 30 for ferrous materials and 10 for non-ferrousmaterials is Brinell hardness test?

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