Mechanical Engineering is a creative profession concerned with the design of devices, machines, processes and systems that involve mechanical work and its conversion from and into different forms of energy. It includes the conversion of chemical, thermal and nuclear energy into mecha nical energy through engines and power plants; transporting energy using devices like heat exchangers, gear transmissions, mechanisms and pipe lines and utilizing energy to perform a variety of tasks involving transportation vehicles, manufacturing tools and equipment and household de vices. In short, Mechanical Engineering is one of the broadest and most versatile areas of the engineering profession.