Why Sumpner's Test or Back to Back Test? For a transformer, the temperature rise is an important factor to be noted before making it into operation. The temperature of a transformer changes in proportion to the load. Because…
Electricity generated at all the power plants is alternating i.e., ac, in order to generate direct current i.e., dc, a commutator is used to convert the generated ac supply into dc supply. Hence, an electrical generator with a co…
The performance (efficiency, regulation, losses) of a transformer is best judged if the following four parameters of its equivalent circuit are known, The equivalent resistance R 01 is referred to as primary, and the equivalent…
The blocked rotor test, it is quite opposite of the no-load test of the induction motor. Usually in transformer tests, if we want to find the behavior of a transformer on loading and on no-load, it can be done by using open circu…
What is Ideal Transformer? An ideal transformer is one that has no losses i.e., its windings have no resistance, there is no magnetic leakage, and hence it has no iron and copper losses. It may, however, be noted that it is impo…
As we know that most electrical power plants are located far away from the load centers. Because the electrical energy generated by thermal and hydro or any other power plants are located at a distance from the consumers. To tran…
Necessity of Starting a Three-phase Induction Motor : In a 3-phase Induction motor, the magnitude of rotor induced emf depends upon slip. The equation for Rotor current of induction motor is given by, At starting, the magnitud…