] Close-packed structureJAnions|Cations]Low melting temperature material| Materials with secondary bonding20) Once a system is at a state of equilibrium, a shift from equilibrium may result by alteration of whichof the following?Į Pressure] Temperature| All of the above21) The interstitial solid solution of carbon in BCC Fe known as ferrite. can be best described as:1 Composition[ I grains of Carbon randomly mixed with grains of iron.Ja random distribution of Carbon atoms in between the iron atom positions of BCC.Ja random arrangement of iron atoms at the FCC crystal lattice positions of Carbon.Ja very specific arrangement of Carbon atoms at the lattice positions of the BCC iron.Ja random arrangement of carbon atoms at the lattice positions of the BCC iron.22) Crystalline materials are composed of grains which have a wide range of sizes. A part from this. thedifference between adjacent grains in a pure metal or ceramic is their different:| Densities] Compositions] Crystal orientations.23) The ranking of the following parts of a piece of metal in terms of energy (highest to lowest) is:[]Lattice parameters] Crystal structures] Bulk : Surface : Grain boundary.] Surface : Bulk : Grain boundary] Grain boundary : Bulk : Surface.] Grain boundary : Surface : Bulk24) The APF for the BCC: FCC: HCP crystal systems are respectively:10.68 : 0.74: 0.74J0.68 : 0.74: 0.68[]0.68 : 0.68: 0.74]0.51 : 0.74: 0.7425) In comparison with van der Waals bonds, hydrogen bonds are expected to be stronger because:]0.74 : 0.74: 0.68[]0.68 : 0.74: 0.86| They exchange more electrons] This is true only at high temperatures] The degree of cross-link is higher] They originate in permanent dipoles26) Screw Dislocation Created due to:| Tensile stress1 Both tensile and compressive stresses1 Shear stress1 Both tensile and shear stressesFor the following statements, write V if you think the statements is true or x if you think thestatements is False in the square brackets | :? ] Non-steady diffusion such as diffusion of carbon into steel during carburizing. is not very dependent ontemperature. Tine of diffusion is much more important.IThe recrystallization temperature for a metal which is hot worked is lower than that if the metal is cold

20) Equilibrium state is a phase at which there is no change in physical properties and chemical…

Answered: 20) Once a system is at a state of…

20) Once a system is at a state of equilibrium, a shift from equilibrium may result by alteration of which of the following? ] Pressure 1 Temperature | Composition | All of the above

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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