JCB Diploma Trainee Engineer Interview Questions and Answers

All branch related questions in aptitude

Q1. Introduction and told job and responsibilities
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Q1. Introduction & family
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Mechanical Questions Aptitude Test

Q1. Working Principle of Air Conditioning System, Refrigeration and Air Conditioning.
Ans. 
Air conditioning and refrigeration systems work on the principle of heat transfer and phase change of refrigerant.
• Air conditioning system cools and dehumidifies air in a room or building.

• Refrigeration system removes heat from a space and transfers it to the outside environment.

• Both systems use a refrigerant to absorb and release heat through phase change.

• Air conditioning system uses a compressor, evaporator, condenser,...read more
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Q2. Describe Vapour Compression Refrigeration System.
Ans. 
Vapour Compression Refrigeration System is a common refrigeration system used in air conditioning and refrigeration applications.
• It works by compressing refrigerant vapor to increase its temperature and pressure.

• The high-pressure vapor then condenses into a liquid, releasing heat.

• The liquid refrigerant then passes through an expansion valve, where it evaporates and cools the surrounding area.

• The low-pressure vapor is t...read more
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Q1. Introduction About you Family and educations, Last employment,etc
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Normal technical based questions

Q1. Total diploma based questions
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Q1. This about my family background and my goal and etc
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