Mechanical Engineering comprises the design, analysis and usage of heat and mechanical power for the operation of machines and mechanical systems.
Systems engineering is an interdisciplinary field of engineering that focuses on how to design and manage complex engineering projects over their life cycles. Issues such as reliability, logistics, and coordination of different team’s managements, evaluation measurements, and other disciplines become more difficult when dealing with large or complex projects. It overlaps technical and human-centered disciplines such as control engineering, industrial engineering, organizational studies, and project management. Systems engineering ensures that all likely aspects of a project or system are considered, and integrated into a whole. And System Engineering is consisted of all types of engineering working together.
Electrical engineering comprises the study and application of electricity, electronics, and electromagnetism. Robotic Engineering and Electrical engineering are completely different, not only what they do but also how and what they make. Electrical Engineers work on improving electronics like upgrading computers. And Robotic engineers work on improving robots. But Robotic and Electric engineering are similar because robots are electronics.
About all Engineers:
All engineers not only build and create new and improved inventions, but they also solve their problems before selling their product to customers.