Mechanical Engineering - Engineering Materials

36.
A steel with 0.8% carbon and 100% pearlite is called
eutectoid steel
hypo-eutectoid steel
hyper-eutectoid steel
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

37.
18/8 stainless steel consists of
18% nickel and 8% chromium
18% chromium and 8% nickel
18% nickel and 18% chromium
8% nickel and 8% chromium
Answer: Option
Explanation:
No answer description is available. Let's discuss.

38.
Vanadium when added to steel
increases tensile strength
decreases tensile strength
raises critical temperature
Sowers critical temperature
Answer: Option
Explanation:
No answer description is available. Let's discuss.

39.
The limestone in the charge of a blast furnace decomposes to give lime and carbon dioxide. The lime thus obtained
controls the grade of pig iron
acts as an iron-bearing mineral
supplies heat to reduce ore and melt the iron
forms a slag by combining with impurities
Answer: Option
Explanation:
No answer description is available. Let's discuss.

40.
During the operation of a bessemer converter, the white flame indicates that the silicon and managenese had burnt and carbon has started oxidising.
Agree
Disagree
Answer: Option
Explanation:
No answer description is available. Let's discuss.