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Faraday conducted a series of experiments on coils in a magnetic field.
He found that if the magnetic flux density threading a coil were changed, a voltage was induced in the coil and a current flowed if the circuit was closed.
This was true however the change in flux is produced e,g,
1) relative movement between the coil and the magnetic field
2) a change the current flowing in a nearby coil
3) a change in the current flowing in the coil itself.
Q. A 300-kVA transformer has a core loss of 1.5 kW and a full-load copper loss of 4.5 kW. (a) Calculate its efficiency corresponding to 25, 50, 75, 100, and 125% loads at unity
solve problem by neural network using matlab code
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