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The flux means the flux of the magnetic field passing through the iron core of the transformer. Because the applied voltage is AC, it means that the flux is also AC.
The voltage and the flux are related by the basic formula v = N d/dt (phi) where N is the number of turns in the coil. At a steady frequency this becomes:
v = N x 2pi x freq x (total flux in Webers)
This is the basic design equation for Transformers because the peak flux density in the core sets a physical limit and determines the size of the transformer, which is why transformers are always larger at lower frequencies.
Wiki User
∙ 10y ago
AC flux in a transformer refers to the alternating magnetic field that is generated when an alternating current flows through the primary winding. This changing magnetic field induces a voltage in the secondary winding, allowing for the transfer of electrical energy from one coil to another. The AC flux is essential for the transformer to function and facilitate the conversion of voltage levels.
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Does a transformer convert AC to DC?
No, a transformer only converts AC voltage to a different voltage level. To convert AC to DC, a rectifier is typically used in conjunction with a transformer to change the alternating current to direct current.
Step up transformer is used to increase the?
A step up transformer is used to step up an AC voltage
Does a transformer rectify the alternating current?
No, a transformer changes the ac to a voltage that the user requires. After that a rectifier can be connected to it to provide dc.
What type of voltage must be passed across a transformer?
A transformer must be connected to an alternating current (AC) supply of the correct voltage.
Find a power supply 120 volt ac 9 watt output 6volt ac?
You can use a step-down transformer to convert the 120V AC input to 6V AC output. Look for a transformer that can handle at least 9 Watts output power, to ensure compatibility with your device. Make sure to double-check the specifications and ensure the transformer meets your power requirements before making a purchase.
Why transformer do not operate with DC?
Transformer works with varying flux. DC won't create it. Only AC produce varying flux.
What are the differences between the natures of dc flux and ac flux?
dc flux is caused by dc current (flux and current are proportional), it is a constant value. Put an inductor (or transformer winding) across a battery and you will get dc flux. ac flux is caused by ac current (flux and current are proportional), it is a moving value, the flux moves with the current, typically cyclical but the waveform is arbitrary as long as we're moving.
What is difference between an AC and DC flux?
As happens with voltage and current, flux is steady for dc but keeps altering for ac. A transformer works through the ac flux in the magnetic core.
Why transformer supply is ac?
trf cannot work on dc. the primary flux must vary for induction to occur in the secondary winding. howlunf
Is mutual flux in transformer constant for all loads?
The flux is set by the voltage applied to the transformer. In most applications, the voltage is constant, and therefore the flux is constant also.
Why transformer not produce DC current?
because transformer in made inductorAlternative AnswerTransformers are AC machines, and do not work with DC. This is because they require an alternating current to set up an alternating magnetic flux which then induces an alternating voltage into its secondary. Remember, there has to be a changing magnetic flux and a conductor for an emf. to be induced into that conductor.
Why will or won't a transformer operate on AC?
transformer will work on ac
How are is a transformer and a rectifier different?
A transformer changes the VOLTAGE of AC current (AC to AC). A rectifier changes AC to DC.
Does the flux changes due to change in the load in a transformer?
Yes, the two things that chage the number of flux lines in a transformer(electromagnet) are the number of turns in the windings and the amount of current flow
How do you reduce a 230v ac transformer to produce 140v ac?
By using step-down transformer
What does a flux density do in a single phase tramsformer?
Answer for USA, Canada and countries running a 60 Hz supply service.In an AC system the voltage alternates 120 times a second. This alternation causes the magnetic field that surrounds the wire in the primary coil to rise and collapse along with the voltage. This magnetic field is also known as magnetic flux. When the flux collapses and rises in the primary winding of the transformer this flux cuts the secondary coils and induces a current to flow in the secondary winding of the transformer. Depending on the amount of coil turns in the secondary, the AC voltage can be higher (step up) or lower (step down) than the primary voltage.
In transformer core flux depends on voltage whereas leakage flux depends on current?
In a Transformer, Core flux is the difference of primary flux and Secondary flux which are opposite to each other in direction. There difference is equal to the no load flux at all loads. So, some of primary flux passes through the core and remaining becomes leakage flux (Because Secondary flux forces it to get out of the core). Same is the case with Secondary flux. Now, flux is directly proportional to Voltage and Current. When Current increases due to increased load (and voltage remains same): Then both primary and secondary flux increase. Because both of them increase, so there difference remains same. And all remaining flux is forced out. Hence leakage flux increases with current, but Core flux remains constant. When Primary Voltage is increased: Then only primary flux increases. So difference of this new increased primary flux and previous same secondary flux increases. Hence Core flux increases with voltage, But leakage flux does not. That's how In transformer core flux depends on voltage whereas leakage flux depends on current.
