Engineering Materials
Malleable cast iron

Is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable
Is produced by annealing process. It is soft, tough, and easily machined metal
Contains 1.7 to 3.5% carbon in Free State and is obtained by the slow cooling of molten cast iron
Is produced by small additions of magnesium (or cerium) in the ladle. Graphite is in the nodular or spheroidal form and is well dispersed throughout the material

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
Stress relaxation is the phenomenon

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

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Engineering Materials