Quiz #12: Gearbox Oil Selection Team 6 Sep, 2024 Gearbox Oil Selection Quiz 1. What is the main advantage of using synthetic gearbox oil over mineral-based oil? A) Lower cost B) Better performance at extreme temperatures C) Higher viscosity D) Improved color stability 2. Which property is critical for gearbox oil used in high-load applications? A) High water content B) High viscosity index C) Low pour point D) High extreme pressure (EP) rating 3. What is the primary purpose of anti-foam additives in gearbox oil? A) To increase oil viscosity B) To reduce foam formation and improve lubrication C) To neutralize acids D) To reduce oxidation 4. Which of the following is a key factor to consider when selecting gearbox oil for high-speed applications? A) Low viscosity B) High thermal stability C) High flash point D) High pour point 5. What does a high oxidation stability in gearbox oil indicate? A) Increased acid formation B) Resistance to viscosity changes over time C) Faster wear of gears D) High susceptibility to foaming 6. Which test is commonly used to assess the wear protection capability of gearbox oil? A) Four-Ball Wear Test B) Flash Point Test C) Pour Point Test D) Viscosity Index Test 7. What is the impact of using a gearbox oil with an incorrect viscosity? A) Enhanced lubrication B) Increased energy efficiency C) Potential for gear damage or reduced protection D) Improved thermal stability 8. Which characteristic of gearbox oil is important for operation in low-temperature environments? A) High viscosity B) Low pour point C) High sulfur content D) High water absorption 9. What is the role of demulsifiers in gearbox oil? A) Prevent rust and corrosion B) Improve thermal conductivity C) Separate water from oil D) Increase foaming tendencies 10. When is it most beneficial to use a polyalphaolefin (PAO) synthetic oil in gearboxes? A) In extremely high ambient temperatures B) For low-load applications C) When cost is the primary concern D) In gearboxes exposed to clean environments Submit