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Engineering Materials - Interview Questions and Answers

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31. The composition of silver solder is
A. silver, copper, zinc
B. silver, tin, nickel
C. silver, lead, zinc
D. silver, copper, aluminium
E. silver, lead, tin.
Explanation:
32. Drop forging dies contain carbon of the order of
A. 0.1 to 0.2%
B. 0.25 to 0.5%
C. 0.6 to 0.7%
D. 0.7 to 0.9%
E. 1.0 to 1.2%.
Explanation:
33. Admiralty brass used for steam condenser tubes contains copper and zinc in the following ratio
A. 50 : 50
B. 30 : 70
C. 70 : 30
D. 40 : 60
E. 60 : 40.
Explanation:
34. Which of the following is used for bearing liner
A. gun metal
B. bronze
C. bell metal
D. babbit metal
E. brass.
Explanation:
35. Gamma iron exits at following temperature
A. room temperature
B. near melting point
C. between 1400�C and 1539�C
D. between 910�C and 1400�C
E. none of the above.
Explanation:
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