Categories of electrical system

Power system: 

Power system are designed to transmit large quantities of electrical energy not information between points efficiency.Frequently rotating machines are used to convert the energy between electrical and mechanical domains.Generators convert energy from mechanical to electrical. Motors are used to converts energy from electrical to mechanical. 

Communication System:

These are designed to transmit information as low energy electrical signals between points.such functions as information storage,processing and transmission are common parts of a communication system.This area of electrical engineering is often called electronics...

Electrical system are integral parts of a Mechatronics application The following electrical components are frequently found in such applications 

• Motors and generator

• Sensors and actuators(transducer)

• Solid state devices including computer

• circuits(signal conditioning,impedance,amplifiers)

• Contact devices(relay,circuit breakers,switches,fuses)