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Where The core losses in a dc machine occur in?
in a dc machine core losses occur both in stator and rortor but stator core losses are negligible as compared to rotor core losses because in stator constant dc flux is given and the statot conductor is stationary so there are no eddy losses and as the flux is stationary there are no hysteresis loassses also but in rotor armature winding is placed so here alternating field is induced which cuts the rortating conductors of rotor thereby inducing eddy as well as hysteresis losses fo any more info. contact zombie
Why should we separate the core losses?
separation of core losses are necessary to determine core losses at diffrent frequency.........
What is iron loss of the transformer?
'Iron losses' is the name given to the combination of hysteresis losses and eddy-current losses, which occur in the core of a transformer.Hysteresis losses are energy losses associated with the continual magnetisation and demagnetisation of the core, as characterised by the core's B-H* loop -the larger the area of this loop, the greater the losses.Eddy-current losses are energy losses due to circulating currents resulting from voltages induced into the core by the windings.[*B = flux density expressed in teslas; H = magnetic field strength expressed in amperes per metre.]
What are losses of transformer?
Core loss is one of the many fixed losses in a transformer. This means that no matter the loading of the transformer there this loss would be fixed unlike copper loss which depends on the loading of the transformer.
How many types of losses in transformer?
Basically two types: 1. Copper losses:- when the transformer is loaded, current flows in primary and secondary winding, there is loss of electrical energy due to the resistance of the primary winding, and secondary winding and they are called variable losses. These losses depend upon the loading conditions of the transformers. Therefore, these losses are also called as variable losses. 2. Iron losses or core losses:-The losses that occur in the core are known as core losses or iron losses. Two types of iron losses are: > eddy current loss > Hysteresis loss.
How do you reduce core losses?
There are various measures that can be taken to reduce core losses. Lamination of the transformer core is believed to reduce core losses significantly.
What is the difference between copper loss and iron loss in electrical engineering?
Iron losses occur due to nature of material this is of two types 1.eddy currents(circulating currents)2.hystersis loss(nature of material)Copper losses are due to amount of current flowing (given by I2R)AnswerCopper losses are energy losses that occur in the primary and secondary windings, whereas iron losses are energy losses that occur in the core.
How do you reduce core losses in distribution transformer?
Reducing core losses is a design responsibility of the manufacturer. They do this by laminating the core (to reduce eddy-current losses) and carefully selecting the type of material used for the core (to reduce hysteresis losses). There's very little that you, as the user, can do about reducing core losses.
Why core losses are always fixed in transformer?
Core losses are losses in the magnetic system of the transformer, such as eddy currents in the core, hysteresis losses, etc. Because of this, the losses are constant, regardless of load, assuming voltage and frequency stay fixed.
Why core losses are negligible in short circuit test of transformer?
I am so sorry for your core losses
What are core losses?
Iron losses are termed as core losses. There are mainly two losses - Copper loss and iron loss. Iron loss is no load loss.
Core loss of an induction motor?
Just like a transformer, the core losses are a combination of eddy current losses and hysteresis losses.
