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The magnetization current can be broken-down into two components: the first is in phase with the supply voltage and is responsible for the losses, whereas the second component lags the supply voltage by 90 degrees and in responsible for the magnetic field.

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Q: What components compose the excitation current of a transformer. How are they modeled in the transformer 's equivalent circuit?
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What components compose the excitation current of transformer how the are modeled in the transformer's equivalent circuit?

Excitation current Io = Iw + Iu


What is the purpose of OC and SC tests on single phase transformer?

Open circuit and short circuit tests are performed to determine transformer characteristics. In the case of a single phase transformer, SC tests would be performed to determine the impedance. The open circuit test will give excitation information (% excitation at specific voltages, often 90%, 100% and 110%, and no load losses).


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What are the purposes of performing no load test for the transformer?

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the SCT is used to provide excitation during short circuit conditions. under Short Circuit the voltage may drop below threshold level causing field current to drop, to avoid over excitation by the AVR, the short circuit provides the excitation energy required to maintain a voltage that allows protective devices to operate and isolate the fault. the SCT is open under normal operating condition


What are the applications of equivalent circuit of a single phase transformer?

Equivalent circuits allow you to treat the transformer itself as being 'ideal', while treating its losses, etc., as external elements to which the normal laws of networks apply.


What is the definition of equivalent circuit?

A: Is clearly evident if thevenin theorem are applied since it show that circuit no matter how complex it can be reduced to two components eventualy by reducing each part to equivalent circuit


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Without knowing what they is, nobody will ever be able to answer your question.


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what is the function of transformer in the half wave rectifier circuit


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