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GATE ME 2018 Exam: Engineering Material Quiz 2

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Question 1

The effective number of lattice points in the unit cell of simple cubic, body centered cubic, and face centered cubic space lattices, respectively, are

Question 2

Which one of the following pairs is not correctly matched? Where r is the atomic radius and a is the edge length of the lattice.

Question 3

Consider the following statements:
A characteristic of the structure of metallic atoms is that
1) their outermost orbital of electrons is nearly complete and they attract electrons from other atoms
2) their atoms are smaller and more compact than those of non-metallic elements
Which of the above statements is/are correct?

Question 4

The defect responsible for the phenomenon of slip, by which most metals deform plastically, is known as

Question 5

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
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Aug 5ESE & GATE ME