Engineering Materials
Which of the following statement is true about brittle fracture?

Brittle fracture is always preceded by noise
Many metals with hexagonal close packed (H.C.P) crystal structure commonly show brittle fracture
Cup and cone formation is characteristic for brittle materials
High temperature and low strain rates favour brittle fracture

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
Stress relaxation is the phenomenon

In which stress remains constant on increasing load
In which parts are not loaded
In which deformation tends to loosen the joint and produces a stress reduced
Stress reduces on increasing load

ANSWER DOWNLOAD EXAMIANS APP