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Introduction to Electrical Technology PDF
The investigation of the electrical designing, essentially includes the examination of the energy move starting with one structure then onto the next.
An electrical machine, manages the energy move either from mechanical to electrical structure or from electrical to mechanical structure This cycle is called electromechanical energy change.
An electrical machine which changes over mechanical energy into an electrical energy is called an electric generator.
While an electrical machine which changes over an electrical energy into the mechanical energy is called an electrical engine.
Such electrical machines might be identified with an electrical energy of a rotating type called ac. machines or might be identified with an electrical energy of direct kind called dc. machines The d.c. machines are named d.c. generators and d.c. engines.
The development of a dc. machine fundamentally stays same whether it is a generator or an engine.
In this part constructional highlights of a de machine, working guideline and sorts of dc-generator are talked about.
Be that as it may, prior to starting the investigation of the d.c. machines, it is important to change the fundamental ideas of attraction and electromagnetism.
Attraction is a property by righteousness of which a bit of strong body pulls in iron pieces constantly of some different metals.
Such a bit of strong body is known as a characteristic magnet. The two finishes of a magnet are called its shafts.
At the point when such a magnet is suspended openly by a bit of a silk fiber, it tums and changes itself toward North and South of the earth.
The end changing itself toward North is called N pole while other is called S pole.
At the point when such two magnets are brought close to one another, their conduct is represented by certain laws called laws of attraction.