Engineering Materials exam (IPE 101) from the 2023 Level-1 Term-II finals at BUTEX affiliated colleges. Covers atomic packing factors for Cu and Cr, iron-carbon equilibrium diagrams, ductile and brittle fracture, creep stages, and composite material types.
Level-1 Term-II, Final Exám-2023
Subject: Engineering Materials (Code: IPE 101)
Time: 3.0 Hrs. Full Marks: 72
(Use separate answer script for Part: A and Part: B)
(All parts of a question must be answered consecutively)
Part: A
(Answer any three questions)
1. (a) Explain the difference between crystalline solids and amorphous solids.
(b) Find the atomic packing factor of Cu atom.
(c) Find the theoretical density of Cr atom where the radius of Cr atom is 0.125nm.
(d) Draw the family of {1 1 1} planes.
[3+3+3+3 = 12]
2. (a) What is alloying of steel? Write the purpose of alloying of steel.
(b) Describe the BCC crystal structure showing atoms position and calculate total number of atoms per unit cell.
(c) Define atomic packing factor (APF). Find the atomic packing factor (APF) of FCC structure.