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Introduction to Course (in Hindi)
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It is brief introduction to the course. Preparation strategy is also discussed.

Gaurav Joshi
Mechanical Engineer. Secured AIR 5 in ESE & AIR 47 in GATE. Also cleared BARC,ONGC,ISRO. Worked for BARC, HITACHI.Guitar player & Vocalist

Unacademy user
Sir want ask you that, I am studying in 3rd year mechanical engineering and also doing job so how to do study for competitive exams.
sir I want ask u that what is a right time to prepare for ESE ? now I m in my 1st semester of civil engineering do u have any suggestions for me ?
Gaurav Joshi
a month ago
It is too early. Right now try to learn as much as you can (both technical and non technical )
Sakshi Ahire
a month ago
ok thanks sir ☺️
Sakshi Ahire
a month ago
I will start my prepration in 2nd year is it ok?
Thank u very much sir.
  1. Refrigeration & Air- Conditioning (RAC) (For ESE AND GATE) GAURAV JOSHI


  2. About me GAURAV JOSHI o B. Tech in Mechanical Engineering (2010-14) o Secured AIR 5 in ESE-2017 Secured AIR 47 in GATE-2017 Worked For BARC in 2017 Taught Physics in Allen Institute from 2014-16 Career Institute and Aakash c Worked for Hitachi (Air Conditioners) in 2014


  3. About the course ooOooOOO 1. Basic Concepts of Air Conditioning 2. **Numerical Problems and solutions.** Highlights: The syllabus is defined by UPSC for its technical paper and Last year problems are also available. Developing approach to solve problem is most important for any competition


  4. Course Contents 1. Introduction to Refrigeration & Basic knowledge of Thermodynamics required 2. Vapor Compression Refrigeration 3. Vapor Absorption Refrigeration 4. Refrigerants: Types & Properties 5. Refrigeration EquipmentCompressors, Evaporator, Condensers, Expansion Devices 6. Air Conditioning: Properties of moist air 7. Psychrometric Charts


  5. RAC in ESE & GATE oOOOo OO It is application part of Thermo-Dynamics, So not very difficult. Scoring Subject. In ESE prelims 12-16 marks out of 300 In ESE mains: 50-70 marks out of 600. In GATE: 4-5 marks out of 100


  6. Preparation Strategy 1. First learn theory, Apply concepts in last 2. Mark difficult and important problems, try 3. Don't pile up things and plan according to oOOOo OO year problems. them in next revision plan your capacity


  7. THANK YOU