Electrical Machines

  • Battery Capacity Calculator

    Battery Capacity in milli-Amp-Hour (mAH) Calculator Formula and Equations for Battery Capacity Calculator Battery Capacity in mAh = (Battery life in hours x Load Current in Amp) / 0.7 Battery…

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  • Battery-Life-Calculator

    Battery Life Calculator

    Formula and Equations for Battery Life Calculator Battery life = (Battery Capacity/ Load Current) × 0.7 Battery Life = (Ah rating of Battery / Amp) x Run Time % Where;…

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  • Dot Convention & Notation in Transformer Phasing

    The Dot Convention and Dot Notation in a Transformer Phasing

    Transformer Phasing: The Dot Convention and Dot Notation for Transformer Polarity The Dot Conversion (also known as the Dot Notation) is a polarity marking in a Transformer Phasing which is…

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  • Efficiency of Transformer – All Day Efficiency & Maximum Efficiency

    Efficiency of Transformer – All Day Efficiency & Maximum Efficiency

    Transformer’s Efficiency: All Day Efficiency & Condition for Maximum Efficiency Efficiency of Transformer Similar to other electrical machines, (e.g. motors, alternator/generators etc.) the transformer’s efficiency on specific load and power…

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  • How to Connect a Portable Generator to the Home NEC and IEC

    How to Connect a Portable Generator to the Home Supply – 4 Methods

    How to Wire a 1-P & 3-P Portable Generator to the Home Supply using Changeover & Without Changeover or Transfer Switch (ATS & MTS) for 230V/400V & 120V/240V We all…

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  • Series, Parallel & Series-Parallel Connection of Batteries

    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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  • Reactive power control by Alternator Sources and Sinks of Reactive Power

    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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