# Tag: Concepts

SOM

### A must solve question of SOM to improve the basics of deformation

Hello readers, Below is a question which we would recommend to solve from SOM for GATE and ESE Mains. Try

SOM

### Deflection of bar due to self-weight at different locations + Strain energy concepts

When a prismatic bar is hanging and subjected to self-weight then there is elongation in the beam due to the

Material Science

### Cast Iron: a topic asked almost every year in ESE

Cast Iron = Iron +  Carbon (2.1-4.5%)  +  Silicon (up to 3%) Silicon is added to: Promote graphite formation (graphitization) Improve fluidity

THERMO

### Frequently asked basics of Thermodynamics in ESE Objective

The first law of thermodynamics is simply an expression of the conservation of energy principle, and it asserts that energy

FM

### Some concepts you cannot afford to miss about Rotational and Irrotational flow

Basically there are two types of motion (i) Translation and (ii) Rotation. These two may exist independently or simultaneously. SOME

TOM

### Calculation of change in Pressure Angle with change in Centre Distance

NOTE: This concept has been asked in both prelims and mains of ESE 2017. For the involute gear profile increase

TOM

### 5 measures to reduce gear interference

Steps to eliminate interference: Use of a larger pressure angle can eliminate interference. Having a larger pressure angle results in

THERMO

### Shortcuts to convert P-v diagram into T-s diagram

Most of you might have faced problems while converting P-v diagram into T-s diagram. In this post I will be

TOM

### Two unique concepts in Turning Moment Diagram

I was discussing the doubt of one of my students when I realized that these concepts were not explicitly mentioned

THERMO

### Free expansion (real vs ideal gas)

Free expansions are considered to be adiabatic. There are two reasons for this: 1. In a theoretical free expansion, we