Electrical Laws

Ohm's Law Coulomb's Law Kirchoff's Law Faraday's Law Ampere's Law Joule's Law Lenz's Law Biot Savart Law

Electrical Theorems

Thevenin Theorem Nortons Theorem Super Position Theorem Reciprocity Theorem Compensation Theorem Maximum Power Transfer Millmans Theorem Tellegans Theorem

Electrical Rules

Flemings Left Hand Rule Flemings Right Hand Rule Cork Screw Rule

Electrical Network

Network Terminologies

Electrical Terms

Electrical Terms Materials Capacitors Resistors Inductor Self Inductance Mutual Inductance Magnetic Flux Magnetic Characteristics EMF MMF Permeability Sources Reluctance Torque

Electrical Transformer

Transformers How Transformer Works Transformer Classifications Types Transformers Core Type Transformers Ideal Transformers Parallel Operation Transformer Cooling Transformer Forces Transformer Losses Transformer Testing Transformer Bushing Transformer Windings

Types of Transformer

Auto Transformer Current Transformer Potential Transformer Rectifier Transformer Converter Transformer

AC Motor

Stator and Rotor Three Phase Induction Motor Induction Motor Transformer

AC Generator

AC Generators Alternator Stator Construction Alternator Rotor Construction Alternator - Parallel Operation Synchronizing AC Alternator Losses in Alternator

DC Motors

DC Motors Commutator Braking of Electric Motors Dynamic Rheostatic Braking Regenerative Braking Plugging Braking Speed Control DC Motor Losses DC Motors

Types Of DC Motor

DC Motors Types DC Series Motors DC Shunt Motors DC Compound Motor Brushless DC Motors Permanent Magnet DC Motor

Starter For DC Motors

Starters DC Motors

DC Generator

DC Generator Types DC Generators Sparking DC Generators Why Generator Overloading Losses DC Generators

Parallel Operation

PO - DC Generator Series DC Generator Shunt DC Generator Compound DC Generator
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What is Magnetic Flux

The region around a permanent magnet or the cirucular space around a current carrying conductor occupied by the lines of force is called the magnetic field of force or magnetic field. Usually, the magnetic field is representing by imaginary lines of force known as magnetic flux. These flux lines form a closed path and the path followed by the flux lines is known as magnetic circuit. The unit of magnetic flux is Weber (Wb) and is represented by the letter, Φ

Properties of Magnetic Flux

  • The magnetic flux lines are only imaginary lines.
  • Each line of magnetic flux forms a closed loop
  • Magnetic flux lines do not intersect each other.
  • They behave like stretched elastic threads and always try to shorten themselves.
  • The magnetic flux which are parallel and in same direction repel one another.

What is Magnetic Flux Density

The magnetic flux density is the magnetic flux per unit area taken perpendicular to the direction of the magnetic flux. Magnetic flux density is usually denoted by the letter, B and its unit is Tesla (wb / mtr2) If a magnetic flux (Φ) is passing through an area (A), then the magnetic flux density B is given by

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