Mechanical Engineering - Engineering Materials

21.
Shock resistance of steel is increased by adding
nickel
chromium
nickel and chromium
sulphur, lead and phosphorus
Answer: Option
Explanation:
No answer description is available. Let's discuss.

22.
In low carbon steels, __________ raises the yield point and improves the resistance to atmospheric corrosion.
sulphur
phosphorus
manganese
silicon
Answer: Option
Explanation:
No answer description is available. Let's discuss.

23.
A steel containing 16 to 18% chromium and about 0.12% carbon is called
ferritic stainless steel
austenitic stainless steel
martensitic stainless steel
nickel steel
Answer: Option
Explanation:
No answer description is available. Let's discuss.

24.
The alloy, mainly used for corrosion resistance in stainless steels is
silicon
manganese
carbon
chromium
Answer: Option
Explanation:
No answer description is available. Let's discuss.

25.
The temperature required for full annealing in hyper-eutectoid steel is
30° C to 50° C above upper critical temperature
30° C to 50° C below upper critical temperature
30° C to 50° C above lower critical temperature
30° C to 50° C below lower critical temperature
Answer: Option
Explanation:
No answer description is available. Let's discuss.