Definition, Concept, Formula, Unit
Subject and UNIT: Electrical Machines: Unit I: a. Magnetic Circuits and Electromagnetism
The flow of electrons is current which is basically due to electromotive force (e.m.f.). Similarly the force behind the flow of flux or production of flux in a magnetic circuit is called magnetomotive force (m.m.f.) The m.m.f. determines the magnetic field strength.
Definition, Concept, Formula, Unit
Subject and UNIT: Electrical Machines: Unit I: a. Magnetic Circuits and Electromagnetism
The flow of flux produced by the magnet not only depends on the magnetic field strength but also on one important property of the magnetic material called permeability.
Subject and UNIT: Electrical Machines: Unit I: a. Magnetic Circuits and Electromagnetism
When a straight conductor carries a current, it produces a magnetic field all along its length. The lines of force are in the form of concentric circles in the planes right angles to the conductor. This can be demonstrated by a small experiment.
Subject and UNIT: Electrical Machines: Unit I: a. Magnetic Circuits and Electromagnetism
• Let us study two different types of electromagnets, 1) Electromagnet due to straight current carrying conductor 2) Electromagnet due to circular current carrying coil
Definition, Concept, Formula, Unit
Subject and UNIT: Electrical Machines: Unit I: a. Magnetic Circuits and Electromagnetism
It is denoted by H and its unit is newtons per weber i.e. (N/Wb) or amperes per metre (A/m.) or ampere turns per metre (AT/m).
Definition, Concept, Formula, Unit
Subject and UNIT: Electrical Machines: Unit I: a. Magnetic Circuits and Electromagnetism
It can be defined as 'The flux per unit area (a) in a plane at right angles to the flux is known as 'flux density'.
Definition, Concept, Formula, Unit
Subject and UNIT: Electrical Machines: Unit I: a. Magnetic Circuits and Electromagnetism
The total number of lines of force existing in a particular magnetic field is called magnetic flux.
Subject and UNIT: Electrical Machines: Unit I: a. Magnetic Circuits and Electromagnetism
'The region around a magnet within which the influence of the magnet can be experienced is called magnetic field'.
Subject and UNIT: Electrical Machines: Unit I: a. Magnetic Circuits and Electromagnetism
There are two fundamental laws of magnetism which are as follows
Subject and UNIT: Electrical Machines: Unit I: a. Magnetic Circuits and Electromagnetism
All of us are familiar with a magnet. It is a piece of solid body which possesses a property of attracting iron pieces and pieces of some other metals. This is called a natural magnet.
Electrical Machines
Subject and UNIT: Electrical Machines: Unit I: a. Magnetic Circuits and Electromagnetism
Electrical Machines: Unit I: Magnetic Circuits and Electromagnetism : Syllabus, Contents
Electric Circuit Analysis
Subject and UNIT: Electric Circuit Analysis: Model Question and Answer
Electric Circuit Analysis: Model Question and Answer : Solved Anna University Question Paper Part C