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Mechanical Engineering - Engineering Materials

Exercise : Engineering Materials - Section 3
26.
Which of the following metal shrinks most from molten state to solid state?
Cast iron
Cast steel
Brass
Admirality metal
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
A steel containing ferrite and pearlite is
hard
soft
tough
hard and tough
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
The defect which takes place due to imperfect packing of atoms during crystallisation is known as
line defect
surface defect
point defect
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
The upper critical point varies according to the carbon content in steel.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
A coarse grained steel
is less tough and has a greater tendency to distort during heat treatment
is more ductile and has a less tendency to distort during heat treatment
is less tough and has a less tendency to distort during heat treatment
is more ductile and has a greater tendency to distort during heat treatment
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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