Basque PAU Technology & Eng II Practice Questions - Basque Country PAU Technology & Engineering II Examination - UPV EHU (2o Bachillerato 2026) Exam

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A Brinell hardness test is conducted using a 10 mm diameter hardened steel ball indenter under a load of 3,000 kgf. If the resulting indentation diameter d is measured as 4.0 mm, what is the approximate Brinell Hardness Number (HB)?

310 HB 229 HB 450 HB 150 HB

Correct Answer:

229 HB

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