Engineering Materials MCQ Questions & Answers | Mechanical Engineering

A. Purification of metal

B. Grain refinement

C. Working at lower temperature

D. All of the above

A. Ability to undergo large permanent deformations in compression

B. Ability to recover its original form

C. Ability to undergo large permanent deformations in tension

D. All of the above

A. Ability to undergo large permanent deformations in compression

B. Ability to recover its original form

C. Ability to undergo large permanent deformations in tension

D. All of the above

A. Resilience

B. Creep

C. Fatigue strength

D. Toughness

A. 50 : 50

B. 40 : 60

C. 60 : 40

D. 20 : 80

A. 70% copper and 30% zinc

B. 88% copper and 12% tin

C. 85 - 92% copper and rest tin with little lead and nickel

D. 70 - 75% copper and rest tin

A. High temperature and low strain rates favour brittle fracture

B. Many metals with hexagonal close packed (H.C.P) crystal structure commonly show brittle fracture

C. Brittle fracture is always preceded by noise

D. Cup and cone formation is characteristic for brittle materials

A. 70% copper and 30% zinc

B. 90% copper and 10% tin

C. 85 - 92% copper and rest tin with little lead and nickel

D. 70 - 75% copper and rest tin

A. It contains carbon of the order of 0 to 0.25%

B. It melts at 1535°C

C. It is very soft and ductile

D. It is made by adding suitable percentage of carbon to molten iron and subjecting the product to repeated hammering and rolling

A. 0.025%

B. 0.06%

C. 0.1%

D. 0.25%