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 l
✅ The correct answer is option C.
Engineering Materials MCQs
192. Brittle materials when subjected to tensile loads, snap off without giving any sensible elongation.
Yes
No
✅ The correct answer is option A.
193. Vanadium when added to steel
increases tensile strength
decreases tensile strength
raises critical temperature
Sowers critical temper
✅ The correct answer is option A.
194. The upper critical point varies according to the carbon content in steel.
TRUE
FALSE
✅ The correct answer is option A.
195. Which of the following metal is used in making electrical resistance wire for electric furnaces and heating elements?
Babbit metal
Monel metal
Nichrome
Phosphor bronze
✅ The correct answer is option C.
196. The catalysts are used to accelerate the chemical reaction during the process of ploymerisation of plastics.
TRUE
FALSE
✅ The correct answer is option A.
197. Nichrome contains more iron than Inconel.
Agree
Disagree
✅ The correct answer is option A.
198. The nuts and bolts are made from silicon steel.
Correct
Incorrect
✅ The correct answer is option B.
199. White cast iron has
carbon in the form of carbide
low tensile strength
high compressive strength
all of these
✅ The correct answer is option D.
200. The cutting tools are made from
nickel steel
chrome steel
nickel-chrome steel
high speed steel
✅ The correct answer is option D.