Alternating Current

Is Lightning AC or DC ?

Is Lightning Alternating Current (AC) or Direct Current (DC)? Lightning is a transient impulse, meaning it’s neither purely AC nor DC, but rather a combination of both. In other words,…
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What Happens When an AC Line Touches a DC Line?

What Happens When DC Equipment are Operated on AC Voltage and Vice Versa ? AC and DC Mixed Operated Devices There is no simple, one-word answer like ‘Yes’ or ‘No’…
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Types of Inductors and Their Applications

Different Types of Inductors and their Applications There are different types of inductors used in the industry. Each of these different types has some special uses & application such as…
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What is Inductor – Its Working, Parameters, Factors & Applications

Inductor and its Working, Parameters, Factors and Applications An inductor is one of the most used electrical components in a circuit. It is referred by many names such as choke,…
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Peak Voltage and Peak to Peak Voltage Calculator

Peak Voltage (VP) and Peak-to-Peak Voltage (VP-P) Calculator Peak Voltage Calculator This calculator can be used to calculate the Peak Voltage or Max Voltage value (VPK or VMAX) of a…
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RMS Voltage Calculator – From Average Value, Peak & Peak to Peak Value

RMS Voltage Value Calculator This calculator can be used to calculate the RMS Voltage value (VRMS) of a sine wave from different related values such as average value (VAV), peak…
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RMS Value, Average Value, Peak Value, Peak Factor And Form Factor in AC

What is RMS Value, Peak Value, Average Value, Instantiations Value, Form Factor, Peak Factor & Other related Terms to AC Circuits and Sine wave? AC and DC Currents It is…
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Maintenance of Transformer – Power Transformers Maintenance, Diagnostic & Monitoring

Maintenance of Power Transformer – Transformer Diagnostic and Monitoring Introduction Being transformers static machines without any moving and turning parts, they are very reliable machines, and if maintained properly, can…
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Emergency Generator Set – Construction, Installation, Maintenance & Wiring

An Overview of Emergency Generator Set (Manuel Bolotinha) Introduction to Emergency Generator Set Hospitals, airports, shopping malls and office buildings, just to mention some examples, are very sensitive, in what…
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Short Circuit Currents And Symmetrical Components

Short Circuit Currents And Symmetrical Components (Manuel Bolotinha) Short Circuit Faults and Currents Short-circuits can occur phase-to-phase and phase-to-earth, mainly due to: Dielectric breakdown of insulating materials (ageing, severe overheating…
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