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because the core must be magnetic in order to induce a current
A transformer's core is rarely made of iron. It is more usually manufactured from a silicon steel. Often, manufacturers make their own alloy and give them various trade names, such as 'stalloy'. Just like iron, silicon steel, is categorised as a 'soft' magnetic material, which means that it is easily magnetised and demagnetised, which is essential as it takes a great deal of energy to magnetise and demagnetise 'hard' materials. making them completely unsuitable for transformer cores.
Wiki User
∙ 11y ago
Wiki User
∙ 13y agoThe role of an iron core in a transformer is to allow the maximum flow of flux between the primary and secondary windings so that a voltage can be induced in the secondary at a frequency which is the same as in the primary.
Wiki User
∙ 9y agoA transformer's core is manufactured from laminations of silicon iron, although it is generally referred to as silicon 'steel'. Silicon iron is used because it offers low hysteresis losses and has a relatively high resistance. The laminations, which are insulated from each other with a light layer of insulation (in some cases, just oxide) offers a low cross-sectional area to the passage of eddy currents that are induced into the core. So, it is the combination of laminations and high resistance that limits eddy current losses.
Wiki User
∙ 9y agoA silicon iron alloy is used to manufacture Transformers, although it is generally (but inaccurately) termed 'silicon steel' or 'transformer steel'. Silicon steel is used because it has very low hysteresis losses (losses that occur during magnetisation and demagnetisation), and a very low reluctance (the opposition to the formation of magnetic flux). It also has a relatively-high resistivity, which reduces eddy-current losses.
Wiki User
∙ 14y ago1. provide a frame to fix the primary and secondary coil in place. 2.allow magnetic flux to flow across. 3.acts as temporary ferromagnet which amplifies magnitude of flux.
Wiki User
∙ 7y agoThe purpose is to enhance the magnetic field - to make it stronger - compared to just using air.
Wiki User
∙ 13y agoyes core is usefull in transformer since it it increase the permeability for the flux (i..e,it offers less relucyance path thanj air ).Their by decresing the losses in the transformer.
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Why are stripes of iron plates joined instead of using a single block of iron core in a transformer?
To reduce heat generated and eddy current losses in transformer's core during operation.
What will happen to the efficiency of a transformer if the iron core is removed?
its efficiency will decresed.
How the voltage is induced in a single phase transformer?
The changing magnetic flux in the iron core of the transformer induces a voltage in the windings.
Is the transformer's iron core called the primary?
No. the primary winding is called the primary; the secondary winding is called the secondary. These are both wrapped around the iron core of the transformer. The core helps magnetically link the primary and secondary, which causes the transformation of voltage and current from primary to secondary.
What Is a core-core type transformer?
A 'core type' transformer core is one in which the primary windings and secondary windings are placed around each of the limbs, as opposed to a 'shell type' core, in which the two windings are placed across the centre core. A core-type core is a magnetic circuit equivalent to an electric series circuit, whereas a shell-type core is equivalent to an electric parallel circuit. This is better answered with a diagram, so I suggest that you do a search on the internet.
What is the use of core transformer?
500w iron core transformer .that kind of size
Why are stripes of iron plates joined instead of using a single block of iron core in a transformer?
To reduce heat generated and eddy current losses in transformer's core during operation.
What will happen to the efficiency of a transformer if the iron core is removed?
its efficiency will decresed.
What is mean by magnetizing current of transformer?
A: As current flow in the primary it will magnetize the core of the iron in the transformer that is called magnetizing.
How the voltage is induced in a single phase transformer?
The changing magnetic flux in the iron core of the transformer induces a voltage in the windings.
CAN you able to use any other thing instead of iron core in transformer?
shell type core can be used
What is the definition of a core in electrical equipment?
A core in the electrical trade usually refers to the iron laminations that coils of wire are wrapped around. The core directs the magnetic field, that the coils of wire produce when energized, into a working force. This could be the iron core of a relay or a transformer core that is the centre and principle reason that a transformer can operate.
Is the transformer's iron core called the primary?
No. the primary winding is called the primary; the secondary winding is called the secondary. These are both wrapped around the iron core of the transformer. The core helps magnetically link the primary and secondary, which causes the transformation of voltage and current from primary to secondary.
What Is a core-core type transformer?
A 'core type' transformer core is one in which the primary windings and secondary windings are placed around each of the limbs, as opposed to a 'shell type' core, in which the two windings are placed across the centre core. A core-type core is a magnetic circuit equivalent to an electric series circuit, whereas a shell-type core is equivalent to an electric parallel circuit. This is better answered with a diagram, so I suggest that you do a search on the internet.
How do you improve the flux linkage between the primary and secondary windings in a transformer?
by using an iron core
What transformation ratio?
It is the number of turns of copper wire on one side of an iron transformer core to the number of turns on the opposite side of the same iron transformer core. eg. 100 turns on the primary to 25 turns on the secondary is the ratio of 4:1
What is the best material of the core of a transformer?
The core is responsible for the hysteresis losses in a transformer. These are the losses associated with the ease, or otherwise, by which the core is able to become magnetised in one direction, demagnetise and, then, remagnetise in the opposite direction. These days, the type of material used (variations on silicon steel) are about as efficient as possible.
