A single-phase transformer 5 kVA, operating at 50 Hz frequency has turns ratio of 20. The...

A single-phase transformer 5 kVA, operating at 50 Hz frequency has turns ratio of 20. The primary and the secondary winding resistances are 0.15 Ω and 0.025 Ω respectively, and the primary and secondary leakage reactances are 0.65 Ω and 0.15 Ω respectively. The magnetizing inductance and core loss resistance are 6 Ω and 1 Ω respectively.

i. Calculate the primary and secondary impedances referred to primary and sketch the APPROXIMATE equivalent circuit. (Note: please show all parameters in the circuit)

ii. Hence, by referring to primary equivalent circuit, determine the supply voltage and its phase angle if output terminal is connected to a load ZL= 14∠20° Ω and load voltage, V2 is 240∠0° Vrms.

determine the voltage regulation and efficiency when core loss is equal to 100 W.

Expert Solution

Manojponduru answered 5 days ago

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