Exercise: Engineering Materials

Questions for: Engineering Materials

The machinability of steel is improved by adding
A:
nickel
B:
chromium
C:
nickel and chromium
D:
sulphur, lead and phosphorus
Answer: D
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Which of the following is an amorphous material?
A:
Mica
B:
Silver
C:
Lead
D:
Glass
Answer: D
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An aluminium alloy with 11% silicon is used for making engine pistons by die casting technique.
A:
Yes
B:
No
C:
D:
Answer: A
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The alloying element which can replace tungsten in high speed steels is
A:
nickel
B:
vanadium
C:
cobalt
D:
molybdenum
Answer: D
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In normalising process, the hypo-eutectiod steel is heated from 30° C to 50° C above the upper critical temperature and then cooled in still air.
A:
True
B:
False
C:
D:
Answer: A
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