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Archive: Category «Electrical Lectures»

Electrical Thumb Rules You MUST Follow (2)

Continued from first part: Electrical Thumb Rules You MUST Follow (Part 1) For Sinusoidal Current: Form Factor = RMS Value/Average Value = 1.11 For Sinusoidal Current: Peak Factor = Max… Read more

Aug 28, 2013 | jiguparmar

Electrical Thumb Rules You MUST Follow (Part 2)

Electrical Thumb Rules You MUST Follow (1)

Cable Capacity Current Capacity of Equipment Earthing Resistance Minimum Bending Radius Insulation Resistance Lighting Arrestor Transformer Diesel Generator Current Transformer Quick Electrical Calculation For Cu Wire Current Capacity (Up to… Read more

Aug 23, 2013 | jiguparmar

Electrical Thumb Rules You MUST Follow (Part 1)

The Rheostat In Few Simple Words

A variable resistor can be made from a wirewound element, rather than a solid strip of material. This is called a rheostat. A rheostat can have either a rotary control… Read more

Mar 20, 2013 | Edvard

Startup rheostat of VL10 3 kV DC electric locomotive

Super Capacitors – Different Than Others (part 1)

Capacitors store electric charge. Because the charge is stored physically, with no chemical or phase changes taking place, the process is highly reversible and the discharge-charge cycle can be repeated over… Read more

Feb 23, 2013 | sravankumarpadala

Different then others - Super Capacitors

Water-and-Pipe Analogy for Ohm’s Law

Ohm’s Law also makes intuitive sense if you apply it to the water-and-pipe analogy. If we have a water pump that exerts pressure (voltage) to push water around a ”circuit” (current)… Read more

Aug 15, 2012 | Edvard

An analogy for Ohm’s Law

Electric Shock Current, Where Does It Go?

As we’ve already know, electricity requires a complete path (circuit) to continuously flow. This is why the shock received from static electricity is only a momentary jolt: the flow of… Read more

Aug 13, 2012 | Edvard

Electric shock current, where does it go?

Fundamental Concepts of Insulation Testing

Probably 80% of all testing performed in electrical power systems is related to the verification of insulation quality. This technical article briefly describes the fundamental concepts of insulation testing including… Read more

Jul 07, 2012 | Edvard

Fundamental concepts of insulation testing

Dielectric Strength Of Insulator Materials

The atoms in insulating materials have very tightly-bound electrons, resisting free electron flow very well. However, insulators cannot resist indefinite amounts of voltage. With enough voltage applied, any insulating material… Read more

Jun 14, 2012 | Edvard

Medium voltage self-amalgamating insulating compound tape

Power Measurement In AC Circuits

Power measurement in AC circuits can be quite a bit more complex than with DC circuits for the simple reason that phase shift complicates the matter beyond multiplying voltage by current… Read more

May 15, 2012 | Edvard

GE Watthour Meter

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