Question

A 1-phase transformer have full load percentage resistive and reactive drops equal to 1% and 4% respective Calculate its full load voltage regulation at 0,8 pl lagging​

Answer 1

Answer:

The primary winding of a 500VA, 10:1 single-phase step-down transformer is fed from a constant 240Vrms supply. Calculate the percentage regulation of the transformer when connected to an impedance of 1.1Ω

Data given: VA = 500, TR = 10:1, VP = 240V, ZS = 1.1Ω, find %Reg.

transformer no-load voltage regulation

Therefore, VS(no-load) = 24 Volts

transformer full-load voltage

Therefore, VS(full-load) = 23.45 Volts

transformer percentage voltage regulation

Then the percentage down regulation calculated for the transformer is given as: 2.29%, or 2.3% rounded-off

Explanation:

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Answer 2

Explanation:

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