Hi @toflex, thank you for participating in the Industrial Electrical Homework. We have assessed your Homework post , and the below captures our assessments.

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A. You have determined the voltages of the two transformers called step up and step down. The primary and secondary turns of the transformer define step-up and step-down transformers. You are correct in finding out the turn ratio of the transformer.

B. You have wrongly indicated the transformer's breather. There is no breather in the picture of the transformer because there is a breather on the opposite side. The transformer's breather contains silica stones that dehumidify the air. I hope you understand.

C. The transformer in your picture will be a step-down transformer because electrical home appliances are low voltage. But it would be better if you knew the rating of the transformer, like 415/220 volts.

D. You have a 5555 KVA transformer calculated for a 5000KW load. You can't use a transformer to match the electrical load because you can use the transformer at 80% load. I hope you understand.

E. The name of the transformer company is Energypac. Transformers are called step down or step up. I hope you understand your mistake.

F. It is very important to know the transformer's HT and LT current. Your current output is correct. You can see the transformer's nameplate above and understand that your calculation is correct.

G. Power factor is very important for the industrial electrical sector. Electricity companies provide power factors to calculate the loss of electricity due to the high consumption of electricity by customers. The value of the power factor is kept ideal by using power capacitors.

H. Here, you can see the difference between primary and secondary voltage. One is used for higher loads, and the other for lower loads.

Thank you for reading Industrial Electrical Lessons and doing homework. One of the most important parts of electrical work is acquiring knowledge about transformers. Hope it will be useful in your real life. Good luck to you.