Category: Engineering Materials

A. improvement of casting characteristics
B. improvement of corrosion resistance
C. one of the best known age and precipitation-hardening systems
D. improving machinability
E. none of the above

A. shot peening
B. nitriding of surface
C. cold working
D. surface decarburisation
E. under-stressing

A. formation of bainite structure
B. carburised structure
C. martenistic structure
D. lamellar layers of carbide distributed throughout the structure
E. relieving of stresses throughout a component

A. improvement of casting characteristics
B. improvement of corrosion resistance
C. one of the best known age and precipitation-hardening systems
D. improving machinability
E. none of the above

A. 600 VPN
B. 1500 VPN
C. 1000 to 1100 VPN
D. 250 VPN
E. 2000 VPN

A. aluminium
B. tin
C. zinc
D. lead
E. silver

A. below 10°K
B. above 100°K
C. around 0°C
D. around 100°C
E. above 1000°C

A. ductile
B. malleable
C. homogeneous
D. isotropic
E. anisotropic

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
E. none of the above

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
E. none of the above