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What are the Geometrical neutral axis (GNA) and Magnetic neutral axis (MNA)? The Geometrical Neutral axis (GNA) bisects the angle between the two poles of a machine. Whereas the Magnetic Neutral axis (MNA) is the perpendicular axis on the magnetic flux line. Also machine has a “Direct (D) axis” and “Quadrature (Q) axis”. What is a … Read more
Open and short circuit tests are carried out to determine the equivalent circuit parameters of a single phase or 3 phase Transformer. An open circuit or the OC test of a transformer is used to measure “CORE losses“. Whereas the Short circuit or SC test of a transformer is used to measure the “Full load copper loss“. Modern testing setups for … Read more
A rotating machine has an essential part known as Armature winding. Generally, this is responsible for making a rotating magnetic field in a machine. As a result, it provides back emf to the supply. This armature winding is classified into two types. One is Lap winding and another is Wave winding. These have their special … Read more
Continuous Electro-mechanical energy conversion takes place in an Electrical Machine. The transformer is not an Electrical Machine. It is a static device, that does not convert electrical energy to mechanical energy and vice versa. In Short, a Transformer is a thing in an electrical component that Steps up or down the voltage. The Step-up transformer increases the … Read more
Firstly we need to know about basic things like Coil, Pole Pitch, commutator pitch, and Span for a better understanding of these words in the DC machine. What is the coil? The coil of the DC machine uses copper (mainly enameled copper). Some of the machines have a single turn and some have Multi turns … Read more
Generally, a rotating machine has two parts in common one is a stationary part and another is a rotating part. The stationary part of the DC (Direct Current) machine contains several components of the machine such as field winding, pole shoes, bearings, etc. Whereas the rotating part of the DC machine has armature winding, armature … Read more
Open coil winding and closed coil winding are the types of Armature windings. Armature windings are the non-salient pole type and usually are symmetrically distributed in the slots of the complete circumference of the armature. Basically two types of armature windings according to the degree of closure produced: Open Coil Winding: Open coil windings are … Read more
In the case of DC generators – Mechanical Input is applied to the shaft/rotor (i.e, Armature) and Electrical output is collected from Armature itself. In the case of DC Motors – Electrical Input is applied at the Armature terminal and mechanical output at the rotor is received(i.e, Armature). Therefore armature is the center for electromechanical … Read more
Introduction Efficiency is a crucial aspect of any industry, and the transformer is no exception. In the electrical power industry, transformer efficiency is defined as the ratio of the output power to the input power, typically expressed as a percentage. A transformer with high efficiency is able to transfer more power from the input side … Read more
Here I am talking about Inductor definition, symbol, unit, energy stored, formula, types, and applications. What is an Inductor’s Definition? Definition of the inductor may be in many ways: By Definition, the inductor is an electrical/electronic circuit component that reflects some amount of resistance and inductance to the circuit. It is a helical path of the conductor … Read more