Mechanical Engineering - Engineering Materials

6.
In a unit cell of a body centred cubic space lattice, there are __________ atoms.
six
nine
fourteen
seventeen
Answer: Option
Explanation:
No answer description is available. Let's discuss.

7.
Cast iron has
high compressive strength
excellent machinability
good casting characteristic
all of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

8.
The nuts and bolts are made from silicon steel.
Correct
Incorrect
Answer: Option
Explanation:
No answer description is available. Let's discuss.

9.
Silicon in cast iron
makes the iron soft and easily machinable
increases hardness and brittleness
makes the iron white and hard
aids fusibility and fluidity
Answer: Option
Explanation:
No answer description is available. Let's discuss.

10.
The process which improves the machinability of steels, but lowers the hardness and tensile strength, is
normalising
full annealing
process annealing
spheroidising
Answer: Option
Explanation:
No answer description is available. Let's discuss.