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Single phase transformer 10kVA, 2200/220v, 50Hz has the following
configure:
R1=4Ω, X1=5Ω, Rfe=25kω, XM=4kω, R2=0.04 Ω, X1=0.05 Ω
The transformer operates at rated voltage and feeds rated load
with a power factor of 0.8 inductive. To be identified:
1. The voltage fluctuation and the degree of efficiency.
2. The excitation current of the transformer.
3. The energy it consumes in a 24-hour period (in kWh) if it works under a load of 16
hours a day and the rest he works without load.

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