Answer Happy

Posted: **Tue May 24, 2022 9:11 am**

: A 100kva Transformer Has Its Maximum Efficiency Of 0 98 At Full Load At Unity Power Factor During The Day It Is Loaded 1 (141.78 KiB) Viewed 16 times

A 100KVA transformer has its maximum efficiency of 0.98 at full-load at unity power factor. During the day it is loaded as follows: 12 Hours: 20KW at 0.5 power factor 6 Hours: 45KW at 0.9 power factor 6 Hours: 80KW at 0.8 power factor Calculate the All Day Efficiency of the transformer.