Engineering Materials Which of the following statement is true about brittle fracture? High temperature and low strain rates favour brittle fracture Many metals with hexagonal close packed (H.C.P) crystal structure commonly show brittle fracture Cup and cone formation is characteristic for brittle materials Brittle fracture is always preceded by noise High temperature and low strain rates favour brittle fracture Many metals with hexagonal close packed (H.C.P) crystal structure commonly show brittle fracture Cup and cone formation is characteristic for brittle materials Brittle fracture is always preceded by noise ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Specify the sequence correctly Stress relief, recrystallization, grain growth Stress relief, grain growth, recrystallization Grain growth, stress relief, recrystallization Grain growth, recrystallization, stress relief Stress relief, recrystallization, grain growth Stress relief, grain growth, recrystallization Grain growth, stress relief, recrystallization Grain growth, recrystallization, stress relief ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Crystal structure of a material is, generally, examined by Naked eye Optical microscope Metallurgical microscope X-ray techniques Naked eye Optical microscope Metallurgical microscope X-ray techniques ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Pearlite consists of 13% cementite and 87% ferrite 13% ferrite and 87% cementite 13% carbon and 87% ferrite 6.67% carbon and 93.33% iron 13% cementite and 87% ferrite 13% ferrite and 87% cementite 13% carbon and 87% ferrite 6.67% carbon and 93.33% iron ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Free cutting steels Contain carbon in free from Is used where rapid machining is the prime requirement Require minimum cutting force Can be cut freely Contain carbon in free from Is used where rapid machining is the prime requirement Require minimum cutting force Can be cut freely ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Hardness of upper bainite (acicular structure) is about RC 57 RC 65 RC 48 RC 80 RC 57 RC 65 RC 48 RC 80 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS