Exercise: Engineering Materials

Questions for: Engineering Materials

The iron ore in the charge of blast furnace acts as an iron bearing mineral.
A:
True
B:
False
C:
D:
Answer: A
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Quenching is not necessary when hardening is done by
A:
case hardening
B:
flame hardening
C:
nitriding
D:
any one of these
Answer: C
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Incoloy, Hastelloy and Vitallium are __________ temperature alloys.
A:
high
B:
low
C:
D:
Answer: A
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Pearlite consists of
A:
13% carbon and 87% ferrite
B:
13% cementite and 87% ferrite
C:
13% ferrite and 87% cementite
D:
6.67% carbon and 93.33% iron
Answer: B
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Combined carbon in iron makes the metal
A:
soft and gives coarse grained crystalline structure
B:
soft and gives a fine grained crystalline structure
C:
hard and gives a coarse grained crystalline structure
D:
hard and gives a fine grained crystalline structure
Answer: D
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