Exercise: Engineering Materials

Questions for: Engineering Materials

Manganese is added in low carbon steel to
A:
make the steel tougher and harder
B:
raise the yield point
C:
make the steel ductile and of good bending qualities
D:
all of the above
Answer: C
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Cast iron is a ductile material.
A:
Correct
B:
Incorrect
C:
D:
Answer: B
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Cementite consist 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: D
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Sulphur in cast iron
A:
makes the iron soft and easily machinable
B:
increases hardness and brittleness
C:
makes the iron white and hard
D:
aids fusibility and fluidity
Answer: B
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The property of a material which enables it to retain the deformation permanently, is called
A:
brittleness
B:
ductility
C:
malleability
D:
plasticity
Answer: D
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