A. gun metal
B. bronze
C. bell metal
D. babbit metal
E. brass
Related Mcqs:
- Which of the following constituents of steels is softest and least strong ________________?
A. austenite
B. pearlite
C. ferrite
D. cementlte
E. bainite - Cast iron is characterised by minimum of following %age of carbon_________________?
A. 0.2%
B. 0.8%
C. 1.3%
D. 2%
E. 6.3%. - Which of the following element results in presence of free graphite in C.I_________________?
A. carbon
B. sulphur
C. silicon
D. manganese
E. phosphorous - Cold rolled steel sheets contain carbon of the following order___________________?
A. 0.1%
B. 0.2%
C. 0.4%
D. 0.6%
E. 0.8% - Cupola produces following material__________________?
A. cast iron
B. pig iron
C. wrought iron
D. malleable iron
E. white iron - Which of the following is not the correct method of increasing fatigue limit __________________?
A. shot peening
B. nitriding of surface
C. cold working
D. surface decarburisation
E. under-stressing - Which of the following pipes is least corrosion resistant__________________?
A. brass
B. mild steel
C. cast iron
D. wrought iron
E. copper - Which one of the following metals would work-harden more quickly than the others__________________?
A. copper
B. brass
C. lead
D. silver
E. aluminium - Alnico, an alloy used extensively for permanent magnets contains iron, nickel, aluminium and cobalt in the following ratio _____________________?
A. 50 : 20 : 20 : 10
B. 40 : 30 : 20 : 10
C. 50 : 20 : 10 : 20
D. 30 : 20 : 30 : 20
E. 50 : 10 : 20 : 20 - Elinvar, an alloy used in precision instruments, hair springs for watches, etc. contains the following element as principal alloying element__________________?
A. iron
B. copper
C. aluminium
D. zinc
E. nickel
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