Electrical Machines

Series, Parallel and Series-Parallel Connection of Batteries

Series, Parallel & Series-Parallel Configuration of Batteries Introduction to Batteries Connections One may think what is the purpose of series, parallel or series-parallel connections of batteries or which is the…
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Electric Motors (AC & DC )

AC & DC Electric Motors Library Why Motor rated in kW instead of kVA? Cable Size Calculation for LT & HT Motors What is Motor Efficiency & How to improve…
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Batteries Library

Batteries & Cells Library How to test a battery with Test meter? Why we can’t store AC in Batteries instead of DC? Why Battery rated in Ah (Ampere hour) and…
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Alternator / Generator Library

Alternator / Generator Library All About Electrical Protection Systems, Devices And Units Emergency Generator Set – Construction, Installation, Maintenance & Wiring How to Connect a Portable Generator to the Home…
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Transformer Library

Transformer Library Transformer Working principle of a transformer Ideal Transformer Induction law ( For Transformer) Ideal power equation of the Transformer E.M.F Equation of the Transformer Energy Losses in Transformer…
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How to Size a Single Phase and Three Phase Transformer in kVA? Calculator

How to Calculate the Rating of Single Phase & Three Phase Transformers in kVA We know that a transformer is always rated in kVA. Below are the two simple formulas which…
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Why Can’t We Store AC in Batteries instead of DC?

Why AC Can’t be Stored in Batteries like DC? We cannot store AC in batteries because AC changes their polarity up to 50 (When frequency = 50 Hz) or 60…
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Battery: Cell & Batteries MCQs with Explanatory Answers

Batteries and Cell MCQs with Explanatory Answers 1. These batteries have connected in ___________. Series Parallel 2. In Ideal case, the Charging current for 200Ah battery would be _________ ?…
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Mini Air-Cooler System from 12V Fan (Homemade form Trash)

Mini Air-Cooler System from 12V Fan as Portable Air-Conditioner (Homemade form Trash) The following fun based toy project is made from the trash which can be used as mini air-conditioner…
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How Many Panels, Batteries, Charge Controller and Inverter Do I Need?

A Complete Guide About Solar Panel Installation. Step by Step Procedure with Calculation & Diagrams Below is a DIY (do it yourself) complete note on Solar Panel design installation, calculation…
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