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FAULTS THEIR CAUSES AND REMEDIES OF TRANSFORMERS MCQs – CHAPTER 8 DAE

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1. What is an air-cooled transformer?





2. What is the main advantage of using an air-cooled transformer over an oil cooled transformer?





3. What is the main disadvantage of using an air-cooled transformer over an oil cooled transformer?





4. What is the most common cause of overheating fault in a transformer?





5. What is the effect of earth fault on a Y-connected winding with neutral point connected to ground through an impedance Zg?





6. What is the cause of interturn faults in a transformer?





7. What is the effect of tank faults resulting in loss of oil in an oil cooled transformer?





8. What are some of the protection methods used for transformer faults?





9. What is a 3-phase power transformer?





10. What is an oil cooled transformer?





11. What is the main advantage of using an oil cooled transformer over an air-cooled transformer?





12. What is the main disadvantage of using an oil cooled transformer over an air-cooled transformer?





13. What is the most common cause of overheating fault in a transformer?





14. What is the effect of earth fault on a Y-connected winding with neutral point connected to ground through an impedance Zg?





15. What is the cause of interturn faults in a transformer?





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