Engineering Materials MCQ Questions & Answers | Mechanical Engineering

A. Hearth

B. Stack

C. Bosh

D. Throat

A. Connecting rods

B. Cutting tools

C. Generators and transformers in the form of laminated cores

D. Motor car crankshafts

A. Aluminium

B. Low carbon steel

C. Medium carbon steel

D. High carbon steel

A. Pig iron

B. Cast iron

C. Wrought iron

D. Steel

A. 35

B. 57

C. 710

D. 1015

A. 3.5 to 4.5% copper, 0.4 to 0.7% magnesium, 0.4 to 0.7% manganese and rest aluminium

B. 3.5 to 4.5% copper, 1.2 to 1.7% manganese, 1.8 to 2.3% nickel, 0.6% each of silicon, magnesium and iron, and rest aluminium

C. 4 to 4.5% magnesium, 3 to 4% copper and rest aluminium

D. 5 to 6% tin, 2 to 3% copper and rest aluminium

A. Is a ductile material

B. Can be easily forged or welded

C. Cannot stand sudden and excessive shocks

D. All of these

A. Contains 1.7 to 3.5% carbon in Free State and is obtained by the slow cooling of molten cast iron

B. Is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable

C. Is produced by annealing process. It is soft, tough and easily machined metal

D. Is produced by small additions of magnesium (or creium) in the ladle. Graphite is in nodular or spheroidal form and is well dispersed throughout the material

A. Yield point increases

B. Ductility decreases

C. Ultimate tensile strength increases

D. All of these

A. In which atoms align themselves in a geometric pattern upon solidification

B. In which there is no definite atomic structure and atoms exist in a random pattern just as in a liquid

C. Which is not attacked by phosphorous

D. Which emits fumes on melting