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Engineering MaterialsChoose the correct option: Which statement about hardness testing is most appropriate for steels? (i) Rockwell hardness directly gives Young's modulus (ii) Brinell hardness can be empirically related to ultimate tensile strength (iii) Vickers hardness is expressed in HRC units (iv) Hardness tests are unrelated to strength20252mEngineering MaterialsChoose the correct option: Elements common in Brass and Bronze is (i) Aluminium (ii) Copper (iii) Gold (iv) Zinc20242mEngineering MaterialsChoose the correct option: The BCC structure of Fe-C solid solution is known as (i) Ferrite (ii) Pearlite (iii) Cementite (iv) Austenite20242mEngineering MaterialsDiscuss the method of getting a mixture of Pearlite, Bainite & Martensite steel with a neat TTT diagram.202414m
PreviousChoose the correct option: According to Hume Rothery's rule, size of atoms must not differ by more than (i) 5% (ii) 35% (iii) 15% (iv) 55%NextChoose the correct option: Carbon and Nitrogen are introduced into the surface of steel during (i) Normalizing (ii) Cyaniding (iii) Hardening (iv) Tempering