In large size transformers, the oil serves to – Electrical Engineering MCQ

In large size transformers, the oil serves to:

1. Transfer heat
2. Muffle Noise
3. Both of these
4. None of these

Correct answer: 3. Both of these

Explanation: Large power transformers have their core and windings submerged in an oil bath to transfer heat and muffle noise, and also to displace moisture which would otherwise compromise the integrity of the winding insulation. Heat-dissipating “radiator” tubes on the outside of the transformer case provide a convective oil flow path to transfer heat from the transformer’s core to ambient air. Continue reading here

Also see:

1. What is Dot convention on Electrical Transformers
2. The Ultimate Guide to Transformers
3. The Transformer Polarity Handbook
4. Electrical Transformers Handbook
5. What does 3000:1 indicates on Current Transformer
6. Current Transformer
7. Rating Factor of Current Transformers
8. Transformer’s Power and Current Capacity
9. Instrument Transformer Connections Handbook PDF Download
10. Why noise is produced near Power Transformers