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Mechanical Engineering - Engineering Materials

Exercise : Engineering Materials - Section 4
26.
The compressive strength of cast iron is __________ that of its tensile strength.
equal to
less than
more than
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
When a steel containing less than 0.8% carbon is cooled slowly from temperatures above or within the critical range, it consists of
mainly ferrite
mainly pearlite
ferrite and pearlite
pearlite and cementite
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
Eutectoid reaction occurs at
600°C
723°C
1147°C
1493°C
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
The addition of copper to aluminium possesses maximum strength after heat treatment and age-hardening
Correct
Incorrect
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
Nickel when added to copper improves
machinability
hardness
hardness and strength
strength and ductility
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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