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Mechanical Engineering - Engineering Materials

Exercise : Engineering Materials - Section 5
11.
Which of the following iron exists at 910° C?
α-iron
β-iron
γ-iron
δ-iron
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
The iron ore mostly used for the production of pig iron is
magnetite
haematite
limonite
siderite
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
A carbon steel having Brinell hardness number 100 should have ultimate tensile strength closer to
100 N/mm2
200 N/mm2
350 N/mm2
1000 N/mm2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
The steel widely used for making precision measuring instruments is
nickel steel
nickel-chrome steel
high speed steel
chrome-vanadium steel
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
The ductility is the property of a material due to which it
can be drawn into wires
breaks with little permanent distortion
can be rolled or hammered into thin sheets
can resist fracture due to high impact loads
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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