Engineering Materials MCQ Questions & Answers | Mechanical Engineering

A. Boron steel

B. High speed steel

C. Stainless steel

D. Malleable cast iron

A. Silver and some impurities

B. Refined silver

C. Nickel, Copper and zinc

D. Nickel and copper

A. Grain growth, recrystallization, stress relief

B. Stress relief, grain growth, recrystallization

C. Stress relief, recrystallization, grain growth

D. Grain growth, stress relief, recrystallization

A. 13% carbon and 87% ferrite

B. 13% cementite and 87% ferrite

C. 13% ferrite and 87% cementite

D. 6.67% carbon and 93.33% iron

A. Cast iron

B. High speed steel

C. All nonferrous materials

D. All of the above

A. Stainless steel

B. High speed steel

C. Invar

D. Heat resisting steel

A. Cementite

B. Free graphite

C. Both A and B

D. None of these

A. There is no change in grain size

B. The average grain size is a minimum

C. The grain size increases very rapidly

D. The grain size first increases and then decreases very rapidly

A. Sulphur

B. Phosphorus

C. Manganese

D. Silicon

A. At which crystals first start forming from molten metal when it is cooled

B. At which new spherical crystals first begin to form from the old deformed one when a strained metal is heated

C. At which change of allotropic form takes place

D. At which crystals grow bigger in size