BARC ME 2018 Engineering Materials Nuclear Quiz 3

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Question 1

During tensile testing it has been observed that for some material the deformation is fully recoverable and time-independent, but does not obey hook’s law. The material is

• AElastomer
• BRubber
• CPolymer
• DAluminium alloy

Question 2

When a material sustains steady loads for long periods of time, the material may continue to deform until they may tend to fracture under the same load. This phenomenon is known as

• ACreep
• BFatigue
• CImpact
• DMalleability

Question 3

A mixture of chemical compounding or elements that have a single chemical composition and solidifies at the lowest temperature than any other composition made up of the same ingredients.

• APhase balanced system
• BEutectic system
• CBinary thermally balanced system
• DIntrinsic system

Question 4

Silicon steel is widely used in __________.

• Acutting tools
• Bdies and punches
• Celectrical industry
• Dchemical industry

Question 5

Match the heat treatment processes (Group A) and their associated effects on properties (Group B) of medium carbon steel

• AP-III, Q-Iv, R-H, s-I
• BP-II, Q-III, R-IV, S-I
• CP-III, Q-II, R-IV, S-I
• DP-II, Q-III, R-I, s-IV

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