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Nigeria Electrical Engineering Polytechnics Syllabus as specified by UNESCO

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Earthed and Unearthed System

Methods of Earthing In theory, the main power network does not have to be earthed and sometimes arguments are put forward that an unearthed network may be more reliable. In some cases this can be true, but generally an unearthed networks can be unreliable due to influence of electrical or some other factors. There are a number of ways in which an electrical power system can be operated – - Unearthed or insulated system - High impedance earthed and - Low impedance earthed arrangement Unearthed system/IT earthing system In this kind of installation, there is no formal connection to earth because there may be some high impedance connections for instrumentation e.g coil of a measuring device. Earthed vs Unearthed Electrical cable In some generators and transformers, the star point is solidly grounded. This is called Earthed Electrical system. In a three phase earthed system, phase to earth is 1.732(sqrt 3) is solidly earthed system higher than phase to phas

HND Electrical Engineering Syllabus

Hi my people, here is the list of courses you should be expecting when you are thinking of going for HND program in the polytechnics and 300/400 of a university degree. These ebooks comply with all the courses you might encounter during the pursuit of your bachelor's degree certificate and will be efficient and useful after the completion of your degree probably for advance and practical level. Download to view the course outline here - HND Electrical Engineering Course Outline  1. MTH 311 - Advance Algebra You can also get the whole mathematics pdf/ebook here All mathematics ebook 2. Engineering in Society MEC311 - Engineers in Society , Engineers in Society II 3. Electrical Measurement and Instrumentation EEC311 - Electrical Measurement and signal processing ,  Principles of Electrical Measurement 4.  Electrical Material Science EEC315 -  Electrical Material Science 5. Electrical Circuit Theory EEC 313 -  Electrical circuit theory revised second edition(John Bird)