Tag: EMF Equation

EMF and Torque

EMF and Torque: EMF and Torque – It was shown in Sec. 5.2 (Fig. 5.14 (a)) that in a dc machine the magnetic structure is such that the flux density wave in the air-gap is flat-topped with quarter-wave symmetry so long as the armature is not carrying any current. It will be seen in Sec. […]

Magnetically Induced Emf and Force

Magnetically Induced Emf and Force: Magnetically Induced Emf and Force – Faraday’s law of induction, which is the integral form of the fourth Maxwell’s equation, is given as The integrated form of Eq.(2.15) for a coil of N turns is The positive direction of current in the coil is that direction which establishes positive flux […]