Mechanical engineering is the discipline that applies the principles of engineering, physics, and materials science for the design, analysis, manufacturing. and maintenance of mechanical systems. It is the branch of engineering  that involves the design, production, and operation of machinery. It is one of the oldest and broadest branch of the engineering disciplines.

The engineering field requires understanding of core concepts including mechanics, kinematics, thermodynamics, materials science, structural analysis, and electricity. Mechanical engineers use these core principles along with tools like computer-aided design, and product lifecycle management to design and analyze manufacturing plants, industrial equipment and machinery, heating and cooling systems, transport systems, aircraft, watercraft, robotics, medical devices, weapons, and others.

The Diploma in Mechanical Engineeing is being provided in the following three sub branches of Mechanical.

1. Mechanical Engineering: Production

2. Mechanical Engineering: Automible

3. Mechanical Engineering: Refrigeration and Air Condinitioning

Mechanical Engineering: Refrigeration and Air Condinitioning

Mechanical refrigeration, often referred to simply as refrigeration, is a process by which heat is removed from a location using a man-made  heat-exchange system. The system of refrigeration can be cyclic, non-cyclic, thermoelectric or magnetic depending on the application for which refrigeration  is needed.

Air conditioning, often referred to as A/C or AC, is the process of altering the properties of air (primarily temperature and humidity) to more comfortable conditions, typically with the aim of distributing the conditioned air to an occupied space such as a building or a vehicle to improve thermal comfort and indoor

The Top Companies that Hire Mechanical Engineers are as follows.

. Bajaj Automobile.

. Crompton Greaves Limited

. Siemens Ltd.

. Oil and Natural Gas Corporation (ONGC)

. Bharat Heavy Electricals Limited(BHEL)

. Steel Authority of India Limited(SAIL)

. Coal India Limited(CIL)

. Metro Railway Corporation of India.

.  Bharat Earthmovers Limited (BEML)

. Indian Railway

. Military Engineering Services (MES)

. Honda Motors Car India Limited (HMCIL)

. Yamaha, Maruti, Hero cotocorp, TATA motor etc.