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Mechanical Engineering - Engineering Materials

Exercise : Engineering Materials - Section 4
11.
The alloying element which reduces the formation of iron sulphide in steel is
chromium
nickel
vanadium
manganese
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
For a steel containing 0.8% carbon
there is no critical point
there is only one critical point
there are two critical points
there can be any number of critical points
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
In high speed steels, manganese is used to tougher the metal and to increase its
yield point
critical temperature
melting point
hardness
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
The machinability of aluminium increases when __________ is added to aluminium.
copper
magnesium
silicon
lead and bismuth
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
Body centred cubic space lattice is found in
zinc, magnesinm, cobalt, cadmium, antimony and bismuth
gamma-iron, aluminium, copper, lead, silver and nickel
alpha-iron, tungsten, chromium and molybdenum
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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