Westonci.ca offers quick and accurate answers to your questions. Join our community and get the insights you need today. Join our Q&A platform and connect with professionals ready to provide precise answers to your questions in various areas. Explore comprehensive solutions to your questions from a wide range of professionals on our user-friendly platform.

A transformer has its maximum efficiency of 0.98 at 15kVA at unity pothcr factor.
During the day it is loaded as follous :
12 hours - 3W at 0.5p;6 hours - 12W at 0.8p;
6 hours - 18W at 0.9p . Find its all day efficiency