Category Archives: Electrical machine

What is LVDT ?

LINEAR VARIABLE DIFFERENTIAL TRANSFORMER (LVDT) : It is a type of inductive transducer which is used to measure the displacement. The inductive transducer means they are changing the inductance of the coil due to the change in inductance the non-electrical quantity is converted into electrical quantity. The LVDT(linear variable differential transformer) is used measure the displacement and this… Read More »

Construction of single-phase transformers

Construction of single-phase transformers- A single-phase transformer consists of two winding, called primary and secondary windings mounted on a magnetic core. To confine flux to a definite path magnetic flux is used. Transformer cores are made from thin sheets (called lamination) of high-grade silicon steel. The laminations reduce eddy-current loss and the silicon steel reduces hysteresis loss. The… Read More »

Shaded pole starting of a single phase induction motor

Shaded pole starting of a single phase induction motor- The single phase induction motors are self starting by providing additional flux by some additional means. Now we depending upon these additional means the single-phase induction motor classified as shaded pole induction motor.The single phase induction motors are self starting by providing additional flux by some additional means. Now we depending… Read More »

Losses of 3- phase Induction Motor

The power losses in an induction motor fall in the same general classification as in any dynamo. There are electrical losses due to heat produced by the current in the stator and rotor winding, which is called copper loss, magnetic losses in the iron due to hysteresis and eddy currents, which is called the core losses, mechanical losses… Read More »