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The alternating current flowing through transformer windings changes its polarity with each reversal of the current polarity, simultaneously changing the orientation of the induced magnetic poles within the core material. This constant fluctuation creates heat and other undesirable effects within the transformer, reducing its efficiency. Transformer cores are made of laminated steel or iron to minimize the effects of this electromagnetic phenomenon, which is known as hysteresis.
AnswerThe alternating current flowing through a transformer's primary winding induces voltages into the transformer's core, as well as in the secondary winding. The voltages induced into the core create currents that circulate within the core -these are called 'eddy currents'. Laminating the core reduces the effective cross-sectional areas through which the eddy currents circulate, thus increasing the resistance to those currents, and reducing the associated losses (eddy-current losses). In addition to this, laminations allow the transformer core to be assembled much more easily than using solid cores.
What else can I help you with?
Why don't we use one piece for transformer core?
If, by 'one piece', you mean solid -as opposed to laminated- then the answer is that a solid core will have significantly-higher eddy current (circulating current) losses than a solid core.
Why the core is laminated in TF?
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What is transformer tank?
The container the transformer core and windings are placed inside is the tank.
What is the basic Difference between ferrite core and normal transformer?
i think Transformer operates AC and ferrite core operates in DC
The leakage flux of transformer depends on?
Actually it depends on the air gap between the core and the windings of the transformer. This is the reason why stepped core is used in medium and large transformers as it decreases the air gap between the windings and the core of the transformer.
What is the core made from in a step up transformer?
Laminated steel plates.
Why do you get a typical sound when the transformer is put into operation?
vibration of the transformer's laminated core in response to the AC magnetic field.
What does the two lines indicates which are shown in between the winding of transformer?
They indicate the laminated metal core upon which the windings are wound.
Why electricity does not flow through iron core of transformer?
It does. We call this current, or currents, 'eddy currents', and they are minimised by using laminated cores.
Why don't we use one piece for transformer core?
If, by 'one piece', you mean solid -as opposed to laminated- then the answer is that a solid core will have significantly-higher eddy current (circulating current) losses than a solid core.
Why are the core of transformers manufactured from a laminated plate?
If the transformer had a solid core it would build up eddy currents within the core possibly making the core itself rise in voltage. The laminations break up these eddy current circuits and prevent this.
Why is the core laminated?
The iron core of Transformers is laminated to reduce eddy currents, which cause a loss of energy.
Why the core is laminated in TF?
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How Core losses can be reduced?
by using the laminated core
What is the function of placing a laminated iron core like that of transformer at the back of the field winding in pedestal fan?
iron core is used as an electromagnetic as electric energy is converted in to magnetic energy which in turn converted in to mechanical energy
Why is transformer made of a number of iron sheets?
Transformers are made of a number of iron sheets laminated together to reduce energy losses due to eddy currents and hysteresis in the core material. The laminations help minimize heat generation and improve the efficiency of the transformer by reducing electrical resistance and magnetic flux leakage.
What are the materials used in constructing a step down transformer?
There is a laminated iron core for the magnetic field and then a lot of enamelled copper wire. Step-up transformers use the same materials.
