Generally, Swinburne's test is the most popular testing method of dc machine to determine losses and efficiency. It is an indirect method of testing a dc machine performed without actually loading the machine. Since it …
In the last article, we have seen Swinburne's Test of dc machine, where the efficiency and losses are determined without applying actual load on the machine. It is an indirect method of testing a dc machine. Now let us …
Armature winding is the essential part of any electrical machine ( motor or generator ). The emf or voltage will be induced in the armature winding in the case of a generator, while it produces torque to rotate the shaft in…
During the operation of single-phase ac motors, it experiences various faults at the time of starting or stopping or while running. The faults in single-phase motors are due to many reasons like over or under currents, ove…
A transformer is a static device, that transfers electrical energy from one circuit to another without any physical connection. It works on the principle of magnetic induction, which induces emf in another circuit by means…
In the last article, we have seen about construction and working of a current transformer . A current transformer is a special-purpose transformer used to measure high currents in transmission and distribution systems. But …
A phase-shifting transformer is a special type of transformer used to control active or real power flowing through a multi-network power system. It is used to stabilize power flow and balancing the loads in the power system…
Generally, transformers are used to transfer generated voltage at the generating stations to the various loads. Transformers do this by stepping up the voltage at generating stations and transfers this high voltage to the l…
It is important to monitor current and voltages at the substations and generating stations which are at high values. In dc circuits it is easy to measure large currents by adding suitable shunts to the low range ammeters. W…
