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Introduction to Course (in Hindi)
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It is introduction and preparation strategy for the new course.

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
mam u explain very nicely
Thank u hope u have understood the concepts
all videos lectures are very helpful and explain sir (awesome)
Sir RAC ke liye koi ek standard book reference bataye please.
thank you so much sir . you are the best teacher
Sir thank you so much.u r best teacher !!
  1. Refrigeration & Air- Conditioning (RAC) (For ESE AND GATE) GAURAV JOSHI

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

  3. About the course ooOooOOO 1. Basic Concepts of RAC 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 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 AbsorptionRefrigeration& Gas Refrigeration Cycle 4. Refrigerants: Types & Properties 5. Refrigeration Equipment Compressors, 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 14-16 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 year 2. Mark difficult and important problems, try 3. Don't pile up things and plan according to oOOOo OO problems. them in next revision plan your capacity