Exercise: Engineering Materials

Questions for: Engineering Materials

In the lower part of the blast furnace (zone of fusion), the temperature is
A:
400° to 700°C
B:
800°C to 1000°C
C:
1200°C to 1300°C
D:
1500°C to 1700°C
Answer: C
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Nickel when added to copper improves
A:
machinability
B:
hardness
C:
hardness and strength
D:
strength and ductility
Answer: B
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The addition of copper to aluminium possesses maximum strength after heat treatment and age-hardening
A:
Correct
B:
Incorrect
C:
D:
Answer: A
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Eutectoid reaction occurs at
A:
600°C
B:
723°C
C:
1147°C
D:
1493°C
Answer: B
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When a steel containing less than 0.8% carbon is cooled slowly from temperatures above or within the critical range, it consists of
A:
mainly ferrite
B:
mainly pearlite
C:
ferrite and pearlite
D:
pearlite and cementite
Answer: C
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