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Search Results for: alternator

Star-Star (Y-Y) Connection of Three Phase Transformers

07/09/201905/11/2014 by

There are different types of connection employed for three-phase transformers. The star-star (Y-Y) connection of three-phase transformers is the most economical type … Read moreStar-Star (Y-Y) Connection of Three Phase Transformers

Categories Uncategorized 2 Comments

Why Transformers are Rated in kVA, Not in kW? (With Proof)

16/07/202622/08/2014 by
Featured image for StudyElectrical.com article explaining why transformers are rated in kVA not kW. The technical illustration shows a dynamic central transformer labeled 'RATED IN kVA' glowing with electric blue and gold energy, flanked by icons representing a resistive heater load (cosφ = 1.0) and an inductive motor load (cosφ = 0.8). Swirling equations and circuit diagrams surround the unit. The StudyElectrical logo is in the bottom corner.

Discover exactly why transformers are rated in kVA rather than kW. Learn how core and copper losses dictate a transformer’s thermal limit, explore the mathematical proof behind changing load power factors, and master this classic electrical engineering interview question.

Categories Transformer, Electrical Machines

Characteristics of Separately Excited DC Generators

08/08/201907/08/2014 by

In a separately excited dc generator, the field coils are energized from an independent source.  The disadvantage of a separately … Read moreCharacteristics of Separately Excited DC Generators

Categories Uncategorized 1 Comment

Types of DC Generator – Series, Shunt and Compound

15/09/201906/08/2014 by

Please go through the construction of dc generator before reading this article about different types of dc generator.  A DC … Read moreTypes of DC Generator – Series, Shunt and Compound

Categories Uncategorized 5 Comments

Substation Design Criteria and Studies

07/09/201924/06/2014 by

The most appropriate type of substation depends on such factors as voltage level, load capacity, environmental considerations, site space limitations, … Read moreSubstation Design Criteria and Studies

Categories Uncategorized

How Diesel Locomotives (Diesel Trains) Work?

28/10/201901/05/2014 by

What is a Diesel Locomotive? A “Diesel Locomotive” is a self-powered railway vehicle that moves along the rails and pulls … Read moreHow Diesel Locomotives (Diesel Trains) Work?

Categories Uncategorized 1 Comment

Steam Power Stations – Arrangement and Working

06/10/201919/03/2014 by

Steam power stations convert the heat energy of coal combustion into electrical energy. A steam power station basically works on the … Read moreSteam Power Stations – Arrangement and Working

Categories Uncategorized

Production of Rotating Magnetic Field

13/02/201923/01/2014 by

The production of Rotating magnetic field in 3 phase supply is very interesting. When a 3-phase winding is energized from … Read moreProduction of Rotating Magnetic Field

Categories Uncategorized 4 Comments

29 Important Electrical Interview Questions you must Go through

09/08/201928/04/2012 by

Nervous about an upcoming Electrical Engineer interview? Check out this well-curated list of frequently asked Electrical interview questions and answers. … Read more29 Important Electrical Interview Questions you must Go through

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