Why Armature Core Is Laminated In Dc Machine

10 why is the armature core of a dc machine laminated. To prevent eddy current and hysteresis. The top image depicts a solid armature while the bottom image shows an armature made of five laminations.

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Why armature core is laminated in dc machine.

The rotating part of the dc machine or a dc generator is called the armature. Ventilate air during rotation. Armature of dc generator. The armature core of dc generator is cylindrical in shape and keyed to the rotating shaft.

Motor armatures have to be made of thin laminations of iron to work efficiently a plain solid iron armature would waste a lot of energy in at least two ways the magnetic field that is produced by. Safe the steal for lamination. 11 what is the function of armature in a dc generator. Why the armature core in d c machines is constructed with laminated steel sheets instead of solid steel sheets.

The sum of the eddy currents in the laminated core is smaller than the current in the solid core. Answer for why is the armature core of a dc machine laminated. The armature core of a dc machine is laminated to reduce the eddy current loss. 2020 06 25 17 28 04 2020 06 25 17 28 04.

Asked by haroon rehman. Balance the weight of the core for balanced rotational motion. What is the main factor which governs the size and rating of an electric machine. Reduce the weight of the core.

To reduce the eddy current loss. Some through holes are provided in the laminated armature core in a dc machine to. The yoke is stationary and no flux variations take place and hence the. The function of armature is to rotate the conductors in a uniform magnetic field and provide a path of very low reluctance to the magnetic flux.

Armature core rotates and comes under n and s poles alternately and this flux variations produce hysteresis and eddy current losses in the core and hence the core is laminated. Lamination highly reduces the eddy current loss and steel sheets provide low reluctance path to magnetic field i e decreases hysteresis loss. Why armature core is laminated in dc machine. The armature consists of a shaft upon which a laminated cylinder called amature core is placed.