Engineering Materials Set 8

Mechanical Engineering

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This set of Engineering Materials Multiple Choice Questions & Answers (MCQs) focuses on Engineering Materials Set 8

Q1 | The process in which steel is heated 20? to 40?C below the lower critical temperature, held there for a prolonged period and then allowed to cool slowly in the furnace is known as
Q2 | The fine grained steel
Q3 | An atom containing an odd number of electrons is said to be
Q4 | For heavy loads in aircraft bearings the material used with lead to reduce the risk of scizure is
Q5 | The raw material for mini steel plants is
Q6 | Which type of electron pair exists in a semi-conductor?
Q7 | A body which is permanently deformed is said to have undergone
Q8 | In Charpy impact test, the specimen is held as a
Q9 | Materials which lack permanent magnetic dipoles are called
Q10 | The consitituent which has a powerful softening effect on cast iron and its presence in cast iron reduces the ability of the iron to retain carbon in chemical combination, is
Q11 | Which of the following materials demonstrate viscoelastic behaviour?
Q12 | Carbon steel is
Q13 | A hydrogen atom has
Q14 | Which one is different from the others in press work
Q15 | Which of the following properties has lower value for copper as compared to aluminium?
Q16 | A bearing alloy should have
Q17 | When a loop composed of two dissimilar metals could be made to carry a continuous current simply by maintaining the two junctions at different temperatures, the above effect is known as
Q18 | All of the following are point defects EXCEPT
Q19 | The limiting load beyond which the material no longer behaves elastically is known is
Q20 | When elastic limit is reached
Q21 | In general, high cohesive forces are related to
Q22 | Hardness may be defined as resistance to
Q23 | The theory of failure which gives fairly good results for the ductile materials is
Q24 | Which of the following factor has the least effect on the electrical conductivity of wires made of copper alloy?
Q25 | Thermoplastic and thermoset polymers differ in
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