Hi @mdpolasmia, 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. By looking at the picture, the description is correct according to the rating of the transformer. But the homework would have been better if you mentioned the description of each transformer with a construction diagram.

You got the ratio of the transformer correct, but you made a mistake by using the unit of ratio. The transformer ratio has no unit. I hope you understand your mistake.

B. You have written the description of the various parts of the transformer in a very short form because of which many important functions have not been written. Then you have not written important parts like temperature meter and HT, LT bushing.

C. Mentioning the rating of your home distribution transformer would have made a better presentation. For example, a 415/220-volt transformer is used in homes.

D. For a 5000 KW load, you would be correct to use a 6000 KVA or 6 MVA transformer. But you have to ensure the transformer can supply 80% of the load.

E. You have given the company name of the transformer as Energypack, but I have not mentioned writing the company name. I hope you understand your mistake.

F. HT and LT currents of a 2500 KVA transformer are correct. But if you are smart, you will see that the transformer's name-plate rating is similar.

G. Power factor is a measure of the consumer's power dissipation. A power factor is implemented for users with a higher load.

H. You have correctly written the difference between the two transformers. You have checked the True/False correctly.

Thank you for reading the industrial electrical lessons and participating in the homework. Hopefully, the lessons learned will be useful in real life. Good luck to you.