Category: Engineering Materials

A. refine grain structure
B. reduce segregation in casting
C. improve mechanical properties
D. induce stresses-
E. relieve internal stresses

A. aluminium
B. low carbon steel
C. medium carbon steel
D. high carbon steel
E. cast iron

A. 770°C
B. 910°C
C. 1050°C
D. below recrystallisation temperature
E. above recrystallization temperature

A. in a random manner
B. in a haphazard way
C. in circular motion
D. back and forth like tiny pendulums
E. do not move

A. below 0.5%
B. below 1%
C. above 1%
D. above 2.2%
E. nil

A. cementite
B. free carbon
C. flakes
D. spheroids
E. nodular aggregates of graphite

A. malleable iron
B. nodular iron
C. spheroidal iron
D. grey iron
E. none of the above

A. malleability
B. ductility
C. surface finish
D. damping characteristics
E. hardness

A. 0.2%
B. 0.8%
C. 1.3%
D. 2%
E. 6.3%.

A. nickel, copper
B. nickel, molybdenum
C. zinc, tin, lead
D. nickel, lead and tin
E. none of the above