a 100kva 2400/240v,50hz single phase transformer has an existing current of 0.64a and core loss of 700w,when its high voltage side is energised at rated voltage and frequency.calculate the components of no load currents and no load parameters l
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Load current, IL (to h.v. side) = 4 ∠ – 37° amp.
IC =PC=700= 0.292 AV2400
Iφ = √Ie² - IC²
= √0.64² - 0.292² = 0.569
Primary current, I1 = IC - j Iφ + IL
= 0.292 – j0.569 + 3.19 – 2.40j
= 3.48 – 2.96 j = 4.58 ∠ – 40.3°
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