The shape of the modern world has been credited to the advancements in science and technology. The engineering field has been the major contributory factor towards achieving the scientific marvels of today. Engineers work with structures, tools, machines, metals, chemicals, and various different materials, and use their alertness of mind and creativity to innovate new things or bring modifications to already existing ones. Enginneeing is not so much a career as an expertise, which opens doors into a vast range of jobs. Engineers probably have a wider choice of the environment in which to work, and of type of job, than any other profession. This is because engineering today is not confined to the obvious spheres of mechanical, chemical and electrical but has vast scope in advanced areas such as thermal engineering, ultrasonics, vacuum technology, polymer technology, telecommunication, computers and many more.