Tech companies nowadays are looking for candidates with experience in object-oriented techniques and patterns, and they are holding interviews for those candidates. Hiring such personnel has the benefit of allowing them to simply pick up other OOP languages in accordance with organisational needs. As a result of reading this part, you can improve your chances
Object Oriented Programming (OOPs) Interview Questions Read More »
The sum of the moments of all the forces across the areas of all the filaments about the neutral axis, when a beam is bent is called the bending moment. When the beam is in equilibrium position the bending moment will be equal to the restoring couple or the moment of resistance of the bending.
Expression for Bending Moment of a Beam Read More »
When a wire is stretched, the length of the wire will increase. At the same time, the wire will become thinner, that is, there is a decrease in the cross section of the wire. The ratio of change in diameter of the wire to the original diameter of the wire is known as lateral strain.
Poisson’s Ratio (σ) – Pedagogy Zone Read More »
Effect of stress It is known that the action of large constant stress or the repeated number of cycles of stresses acting on a body decreases the elasticity of the body gradually. Taking these into account, the working stress on an engineering piece is kept far below its ultimate tensile strength. Effect of temperature Normally
Factors Affecting Elasticity – Physics Read More »
There are three types of modulus based on different kinds of strain. They are Young’s modulus (Y) (corresponding to longitudinal strain) Bulk modulus (K) (corresponding to volume strain) Rigidity modulus (N) (corresponding to shear strain) Young’s modulus (Y) Young’s modulus of the materials of the wire is defined as the ratio of longitudinal stress to
Three Types of Moduli Elasticity – Physics Read More »
Imagine a wire to be suspended from a rigid support and carrying a hanger on which suitable weights could be placed to study the behaviour of the wire under conditions of different loads. The extensions of the wire are suitably measured and thus stress and strain for the given wire is calculated. Now, if we
Stress – Strain Diagram Read More »
English Physicist Robert Hook in the year 1676 put forward the relation between the extension produced in a wire and the restoring force developed in it. The law formulated on the basis of this study is known as Hooke’s law. According to Hooke’s law, within the elastic limit, the stress developed is directly proportional on
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Consider a cubic crystal of lattice constant ‘a’. The density of the crystal = ρ Volume of the unit cell = a³ Eqn 1 Mass in each unit cell = ρa³ [latex] \left(\because \text { Density }=\frac{\text { Mass }}{\text { Volume }}\right) [/latex] The number of atoms per unit cell = n The atomic
Relation Between Lattice Constant and Density Read More »
A face centred cubic structure consists of eight corner atoms and six face centred atoms. Examples: Copper, Nickel, Gold, Lead and Platinum. The arrangement of atoms in face centred cubic unit cell is shown in Fig. Number of atoms per unit cell An FCC unit cell consists of eight corner atoms and each and every
Face Centred Cubic (FCC) Structure Read More »
Let us discuss some of the important parameters which are used to describe the crystal structure. Number of atoms per unit cell The total number of atoms present in an unit cell is known as number of atoms per unit cell. The distribution of atoms is different in lattice structure. This can be determined if
Important Parameters in Crystal Structure Read More »