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A 40-KVA, 50 Hz transformer was found to have an efficiency of 97% at full-load, 0.8 power factor lagging. It was also found that the maximum efficiency was obtained at 82% full-load, at the same power factor. Determine the core loss Pi , copper loss at full load Pcufl and the maximum efficiency of the transformer ηmax at 0.8 power factor lagging?

Question 1 A 40-KVA, 50 Hz transformer was found to have an efficiency of 97% at full-load, 0.8 power factor lagging. It was also found that the maximum efficiency was obtained at 82% full-load, at the same power factor. Determine the core loss Pi , copper loss at full load Pcufi and the maximum efficiency of the transformer nmax at 0.8 power factor lagging? i. Enter Pi (in W): ii. Enter Pcufn (in W) iii. Enter nmax (in %): (correct to 4 decimal places) (correct to 4 decimal places) (correct to 4 decimal places) Please answer to 4 decimal places, for example 1.2345 Do not enter space before, between and after the numbers

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0 ANSUDER! 6ven data cu -O Buaing on hok sid L. 0-6724i wcu Also given tot le? . ak tiad . Pf-0.8 32 XIO+cu 32xl6

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