definition of mechanical engg?

Answer 1

Mechanical engineering is a very broad field that involves the application of physical principles for analysis, design, manufacturing, and maintenance of mechanical systems. It is made up of a number of subdisciplines concerned with the mechanics, kinematics (movement), and energy of physical objects. Practitioners of mechanical engineering, known as mechanical engineers, use principles such as heat, force, and the conservation of mass and energy in contributing to the design of vehicles and aircraft, heating & cooling systems, buildings and bridges, industrial equipment and machinery, and much more.

The process of mechanical engineering is optimization: engineers strive to optimize the cost, ease, durability, safety, and overall usefulness of objects. This process can be as simple as the design of a chair for comfort or as complex as the optimization of a turbocharged engine for speed. It can be as small as the cutting of a nano-sized gear or as large as the assembly of a supertanker used to carry oil around the world.