Category: Engineering Materials

A. ferrite
B. pearlite
C. anstenite
D. ferrite and cementite
E. ferrite and pearlite

A. copper
B. brass
C. lead
D. silver
E. aluminium

A. cobalt
B. nickel
C. vanadium
D. iron
E. carbon

A. relieve stresses
B. harden steel slightly
C. improve machining characteristic
D. soften material
E. permit further cold working

A. body centred cubic
B. face centred cubic
C. hexagonal close packed
D. cubic structure
E. orthorhombic crystal

A. 0.5 to 1%
B. 1 – 2%
C. 2.5 to 4.5%
D. 5 – 7%
E. 7-9%.

A. aluminium, copper etc
B. nickel, molybdenum etc
C. nickel, copper, etc
D. all of the above
E. none of the above

A. improves wear resistance, cutting ability and toughness
B. refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties
C. improves cutting ability and reduces hardenability
D. gives ductility, toughness, tensile strength and anticorrosion properties
E. raises its melting point

A. 770°C
B. 910°C
C. 1440°C
D. 1539°C
E. none of the above

A. cold rolled steel
B. hot rolled steel
C. forged steel
D. cast steel
E. carbon-chrome steel