Electrical machines 6 min read
Multiple Winding Transformers
Multiple Winding Transformers generally have one single primary winding with two or more secondary windings But the beauty of transformers…
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Transformer Construction
A simple two-winding transformer construction consists of each winding being wound on a separate soft iron limb or core which…
Electrical machines 5 min read
Basic Principles
As mentioned earlier the transformer is a static device working on the principle of Faraday’s law of induction. Faraday’s law…
Electrical machines 3 min read
Transformers
Introduction Michael Faraday propounded the principle of electro-magnetic induction in 1831. It states that a voltage appears across the terminals…
Electrical machines 2 min read
Alternator alignment with prime mover – how to do & test.
Alternator alignment with the prime mover is very important. With a little misalignment there will be severe vibration that will…
Electrical machines 3 min read
Why iron core is thin & laminated in transformer instead of solid core.
Iron core is thin & laminated in transformer to avoid the loss of eddy current. Eddy current is induced in…
Electrical machines 3 min read
Losses in electrical machine- in brief.
To discuss about losses in electrical machine at first the term “electrical machine” should be cleared. As electrical machine in…
Electrical machines 4 min read
Magnetic Leakage in Rotating Machines:
Magnetic Leakage in Rotating Machines – The leakage flux in rotating machines is that flux which links only the stator or only the…
Electrical machines 11 min read
Types of Electrical Drives:
Types of Electrical Drives has the following major parts: load, motor, power modulator, control unit and source. There are large number…
Electrical machines 3 min read
Applications of Rotating Machines:
Applications of Rotating Machines are normally divided into two categories: those with voltage ratings less than 6,600 V are called low…
Electrical machines 4 min read
Motoring Mode of Operation of an Electrical Machines:
Motoring Mode of Operation of an Electrical Machines – Electricity does not occur naturally in usable form and it also cannot…
Electrical machines 4 min read
ELECTRICAL MACHINES:
1. AC DC Converters 2. AC Motor Control 3. AC Windings 4. Application of Permanent Magnet 5. Approximate Circuit Model 6. Approximate Equivalent Circuit Transformer 7. Armature…