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Mechanical Properties And Testing(Engineering > Engineering Materials ) Questions and Answers
Home
Topic
Engineering
Engineering Materials
Mechanical Properties And Testing
Question 1.
__________ is used as a catalyst in siliconizing.
Hydrogen peroxide
Chlorine gas
Sulfuric acid
Magnesium sulfate
Explanation:-
Answer: Option B. ->
Chlorine gas
Answer:
(b).
Chlorine gas
Question 2.
Usage of ___________ for metallizing helps spray the metal powder in the correct place.
Air, oxygen, and combustible gas
Oxyacetylene powder gun
Silicon dioxide
Hydrogen peroxide
Explanation:-
Answer: Option B. ->
Oxyacetylene powder gun
Answer:
(b).
Oxyacetylene powder gun
Question 3.
What is the hardness of molybdenum powder?
168-183 Vickers
246-263 Vickers
321-368 Vickers
330-390 Vickers
Explanation:-
Answer: Option C. ->
321-368 Vickers
Answer:
(c).
321-368 Vickers
Question 4.
Plasma is metal spraying can obtain temperatures up to ________
10,000 F
20,000 F
30,000 F
60,000 F
Explanation:-
Answer: Option C. ->
30,000 F
Answer:
(c).
30,000 F
Question 5.
Which of the following can be used for hard coating applications?
High-chromium stainless steel
Heat-treated stainless steel
Hardened brass
Aluminum
Explanation:-
Answer: Option A. ->
High-chromium stainless steel
Answer:
(a).
High-chromium stainless steel
Question 6.
How does the amount of cobalt affect the wear of alloys?
High cobalt high wear
Low cobalt high wear
No cobalt high wear
Cobalt does not affect the wear
Explanation:-
Answer: Option A. ->
High cobalt high wear
Answer:
(a).
High cobalt high wear
Question 7.
Increase of hardness of an alloy with an increase in time is known as ________
Age hardening
Solution hardening
Dispersion hardening
Phase transformation hardening
Explanation:-
Answer: Option A. ->
Age hardening
Answer:
(a).
Age hardening
Question 8.
Which of the following is not a stage of the age-hardening process?
Heating
Quenching
Tempering
Aging
Explanation:-
Answer: Option C. ->
Tempering
Answer:
(c).
Tempering
Question 9.
What is the relation of solubility and temperature for an age-hardening alloy?
Increases with decrease in temperature
Decreases with decrease in temperature
Increases irrespective of temperature
No change due to temperature
Explanation:-
Answer: Option B. ->
Decreases with decrease in temperature
Answer:
(b).
Decreases with decrease in temperature
Question 10.
Carbon steels containing ________ carbon are easier to hard-face.
< 0.35%
3.2%
5.18%
> 6.77%
Explanation:-
Answer: Option A. ->
< 0.35%
Answer:
(a).
< 0.35%
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