Any process takes some energy in and does some work. During this process, some energy is wasted. Now if we check the efficiency of this process, it would be – how much work is done in Joules (generally it is in kcal or number of production units – which needs to converted in some common
Energy is nothing but the ability to work. Work is done in in many forms – heating, pulling, pushing, driving, placing at some height, charging, melting, blowing, flowing and many more. So to do this work available energy is needed to convert into the the form in which it is suitable to do the work.