Engineering Materials

A. 0.1%
B. 0.2%
C. 0.4%
D. 0.6%
E. 0.8%

A. carbon
B. sulphur
C. silicon
D. manganese
E. phosphorous

A. silicon and sulphur
B. phosphorous, lead and sulphur
C. sulphur, graphite and aluminium
D. phosphorous and aluminium
E. none of the above

A. cast iron
B. pig iron
C. wrought iron
D. malleable iron
E. white iron

A. 1539°C
B. 1601°C
C. 1489°C
D. 1712°C
E. 1131°C

A. copper
B. chromium
C. nickel
D. silicon
E. none of the above

A. high maehinability
B. low melting point
C. high tensile strength
D. good fluidity
E. all of the above

A. austenite
B. martensite
C. pearlite
D. cementite
E. all of the above

A. improves wear resistance, cuttinability and toughness
B. refines grain size and produces les tendency to carburisation, improve corrosion and heat resistant proper ties
C. improves cutting ability and reduce hardenability
D. gives ductility, toughness, tensile strength and anti corrosion property:
E. none of the above

A. adding carbon up to 2.8%
B. adding carbon up to 6.3%
C. adding carbon up to 0.83%
D. adding small quantities of copper
E. adding copper and carbon