Quiz #14: Transformer Oil Properties Team 30 Nov, 2024 Transformer Oil Quiz 1. What is the main purpose of using transformer oil in a high-voltage transformer? A) To cool the transformer B) To insulate the transformer C) Both A and B D) To lubricate the transformer 2. Which of the following is a sign of transformer oil contamination? A) Increased viscosity B) Cloudiness or turbidity C) Reduced dielectric strength D) All of the above 3. What is the function of a silica gel breather in a transformer? A) To cool the transformer B) To absorb moisture from the air C) To insulate the transformer D) To lubricate the transformer 4. What is the effect of sludge formation in transformer oil? A) It improves insulation B) It reduces cooling efficiency C) It increases dielectric strength D) It has no effect 5. What is a common method for testing the dielectric strength of transformer oil? A) Viscosity test B) Dielectric breakdown test C) Flash point test D) Pour point test 6. What is the purpose of a transformer oil degassing process? A) To remove contaminants B) To remove dissolved gases C) To improve cooling efficiency D) All of the above 7. What is a potential consequence of using oil with high moisture content in a transformer? A) Improved insulation B) Increased risk of transformer failure C) Reduced cooling efficiency D) Both B and C 8. What is the role of a Buchholz relay in a transformer oil system? A) To increase viscosity B) To detect gas accumulation C) To improve color D) To reduce cost 9. What should you do if transformer oil has a high sludge content? A) Ignore it B) Replace the oil C) Regenerate the oil D) Both B and C 10. What is the significance of the viscosity in transformer oil? A) It indicates the oil's flammability B) It measures the oil's flow characteristics C) It shows the oil's dielectric strength D) It determines the oil's cooling efficiency Submit
