Engineering Metallurgy - Mechanical Engineering (MCQ) questions and answers

1)   The alloy of Ti + 5% Al, + 2.5 Sn has _______.
- Published on 11 Sep 15

a. low temperature stability
b. low strength
c. good corrosion
d. all of the above
Answer  Explanation  Related Ques

ANSWER: good corrosion

Explanation:
No explanation is available for this question!


2)   A bearing material should not possess the characteristic of high ______.
- Published on 11 Sep 15

a. coefficient of friction
b. hardness
c. melting point
d. thermal conductivity
Answer  Explanation  Related Ques

ANSWER: coefficient of friction

Explanation:
No explanation is available for this question!


3)   Inconol nickel alloy contains _________
- Published on 11 Sep 15

a. 75% Ni, 15% Cr and 9% Fe
b. 75% Ni, 15% Cr and 9% Al
c. 75% Ni, 15% Cr and 9% Mg
d. None of the above
Answer  Explanation  Related Ques

ANSWER: 75% Ni, 15% Cr and 9% Fe

Explanation:
No explanation is available for this question!


4)   Which of the following cold working operations are suitable for α brass?
- Published on 11 Sep 15

a. Cold rolling
b. Deep drawing
c. Both a. and b.
d. None of the above
Answer  Explanation  Related Ques

ANSWER: Both a. and b.

Explanation:
No explanation is available for this question!


5)   The solubility of tin in copper above 580oC _______
- Published on 11 Sep 15

a. decreases
b. increases
c. remains constant
d. none of the above
Answer  Explanation  Related Ques

ANSWER: decreases

Explanation:
No explanation is available for this question!


6)   Why is gray cast iron annealed?
- Published on 11 Sep 15

a. Graphitize carbide
b. Decrease ductility
c. Both a. and b.
d. None of the above
Answer  Explanation  Related Ques

ANSWER: Graphitize carbide

Explanation:
No explanation is available for this question!


7)   Which desulphurising agent is used to remove sulphur from iron during melting?
- Published on 11 Sep 15

a. Calcium carbide
b. Sodium carbonate
c. Soda ash
d. All of the above
Answer  Explanation  Related Ques

ANSWER: All of the above

Explanation:
No explanation is available for this question!


8)   Rosettes of tempered carbon in the matrix of ferrite are observed in the microstructure of _____
- Published on 11 Sep 15

a. gray cast iron
b. spheroidal cast iron
c. malleable cast iron
d. none of the above
Answer  Explanation  Related Ques

ANSWER: malleable cast iron

Explanation:
No explanation is available for this question!


9)   Which of the following elements increase/s chilled depth for chilled cast irons?
- Published on 11 Sep 15

a. Silicon
b. Manganese
c. Manganese sulphide
d. All of the above
Answer  Explanation  Related Ques

ANSWER: Manganese sulphide

Explanation:
No explanation is available for this question!


10)   What is the effect of increased carbon content on chilled cast iron?
- Published on 11 Sep 15

a. Chilling depth increases
b. Hardness of chilled zone increases
c. Both a. and b.
d. None of the above
Answer  Explanation  Related Ques

ANSWER: Hardness of chilled zone increases

Explanation:
No explanation is available for this question!


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