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Engineering Materials - Interview Questions and Answers

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91. Lead is poured into the joint between two pipes. These pipes may be made of
A. cast iron
B. vitrified clay
C. asbestos cement
D. concrete
E. mild steel.
Explanation:
92. Foundry crucible is made of
A. mild steel
B. german silver
C. lead
D. cast iron
E. graphite.
Explanation:
93. Recrystallisation temperature can belowered by
A. purification of metal
B. grain refinement
C. working at lower temperature
D. all of the above
E. none of the above.
Explanation:
94. Basic solution is one which has pH value
A. greater than 7
B. equal to 7
C. less than 7
D. pH value has nothing to do with basic solution
E. none of the above.
Explanation:
95. The ultimate tensile strength of low carbon steel by working at a high strain rate will
A. decrease
B. increase
C. remain constant
D. first increase and then decrease
E. first decrease and then increase.
Explanation:
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