Mechanical Engineering - Engineering Materials

6.
In a face centred cubic space lattice, there are
nine atoms out of which eight atoms are located at the corners of the cube and one atom at its centre
fourteen atoms out of which eight atoms are located at the corners of the cube and six atoms at the centres of six faces
seventeen atoms out of which twelve atoms are located at the twelve corners of the hexagonal prism, one atom at the centre of each of the two hexagonal faces and three atoms are symmetrically arranged in the body of the cell
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.

7.
The fuel used in a blast furnace is
coal
coke
wood
producer gas
Answer: Option
Explanation:
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8.
Face centred cubic space lattice is found in gamma-iron, aluminium, copper, lead, silver and nickel.
True
False
Answer: Option
Explanation:
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9.
Which of the following is a point imperfection?
Vacancy
Interstitial imperfection
Frenkel imperfection
all of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

10.
The process in which carbon and nitrogen both are absorbed by the metal surface to get it hardened is known as
carburising
cyaniding
flame hardening
induction hardening
Answer: Option
Explanation:
No answer description is available. Let's discuss.