Tutorial-7

TUTE SHEET-7
LUBRICATION & LUBRICANTS


1. Define the following terms:
(a) Lubricant (b) Viscosity index (c) Aqua- Dag (d) Oil_dag (e) Cloud point (f) Pour Point (g) Flash Point (h) Fire point (i) Drop point (j) Aniline point (h) Oiliness.

2. Write short notes on :
(a)Carbon residue test (b) Petrol based lubricants (c) solid lubricants (d) Manufacture of grease (e) silicon lubricants (f) dibasic and esters
3. What are the various factors that dictate the choice of the lubricants
4. Explain the different theories of lubrication.
5. How are lubricating oils classified? Provide illustrations
6. Explain the role of (a) Additives (b) Anti-oxidants (c) corrosion inhibitors (d) Pour point depressant (e) Viscosity index (f) Flash point in the study of lubricants
7. Indicate the relation between viscosity index and molecular structure. Compare vis. Index of synthetic lubricants with that of mineral lubricants.
8. How do the activities functions in lubricants?
9. Explain boundary lubrications?
10. What are the functions of lubricants?
11. Write a note on solid lubricants.
12. How do extreme pressure additive work?
13. Why does graphite act as a lubricant?
14. What is axle grease and how is it prepared ?
15. Give some example of animal and vegetable oils. What are their inherited drawbacks in using as lubricants.
16. What are blended oils and why are they blended?
17. What are silicones ? Write their general formula.
18. What are antioxidants? Give some examples
19. What is hydrodynamic lubrication? Discuss its mechanism and explain why hydrocarbon oils are suitable for this type of lubrication.
20. Why hydrodynamic lubrication not possible under boundary conditions? Give a brief account of boundary lubrication and discuss its important features.
21. Write short notes on :
(i) cutting oil, (ii) cooling liquids, (iii) Blended oils, (iv) Saponification number, (v) Acid number, (vi) precipitation number, (vii) Ash content.




TUTE SHEET-7
LUBRICATION & LUBRICANTS


1. Define the following terms:
(a) Lubricant (b) Viscosity index (c) Aqua- Dag (d) Oil_dag (e) Cloud point (f) Pour Point (g) Flash Point (h) Fire point (i) Drop point (j) Aniline point (h) Oiliness.

2. Write short notes on :
(a)Carbon residue test (b) Petrol based lubricants (c) solid lubricants (d) Manufacture of grease (e) silicon lubricants (f) dibasic and esters
3. What are the various factors that dictate the choice of the lubricants
4. Explain the different theories of lubrication.
5. How are lubricating oils classified? Provide illustrations
6. Explain the role of (a) Additives (b) Anti-oxidants (c) corrosion inhibitors (d) Pour point depressant (e) Viscosity index (f) Flash point in the study of lubricants
7. Indicate the relation between viscosity index and molecular structure. Compare vis. Index of synthetic lubricants with that of mineral lubricants.
8. How do the activities functions in lubricants?
9. Explain boundary lubrications?
10. What are the functions of lubricants?
11. Write a note on solid lubricants.
12. How do extreme pressure additive work?
13. Why does graphite act as a lubricant?
14. What is axle grease and how is it prepared ?
15. Give some example of animal and vegetable oils. What are their inherited drawbacks in using as lubricants.
16. What are blended oils and why are they blended?
17. What are silicones ? Write their general formula.
18. What are antioxidants? Give some examples
19. What is hydrodynamic lubrication? Discuss its mechanism and explain why hydrocarbon oils are suitable for this type of lubrication.
20. Why hydrodynamic lubrication not possible under boundary conditions? Give a brief account of boundary lubrication and discuss its important features.
21. Write short notes on :
(i) cutting oil, (ii) cooling liquids, (iii) Blended oils, (iv) Saponification number, (v) Acid number, (vi) precipitation number, (vii) Ash content.





TUTE SHEET-7
LUBRICATION & LUBRICANTS


1. Define the following terms:
(a) Lubricant (b) Viscosity index (c) Aqua- Dag (d) Oil_dag (e) Cloud point (f) Pour Point (g) Flash Point (h) Fire point (i) Drop point (j) Aniline point (h) Oiliness.

2. Write short notes on :
(a)Carbon residue test (b) Petrol based lubricants (c) solid lubricants (d) Manufacture of grease (e) silicon lubricants (f) dibasic and esters
3. What are the various factors that dictate the choice of the lubricants
4. Explain the different theories of lubrication.
5. How are lubricating oils classified? Provide illustrations
6. Explain the role of (a) Additives (b) Anti-oxidants (c) corrosion inhibitors (d) Pour point depressant (e) Viscosity index (f) Flash point in the study of lubricants
7. Indicate the relation between viscosity index and molecular structure. Compare vis. Index of synthetic lubricants with that of mineral lubricants.
8. How do the activities functions in lubricants?
9. Explain boundary lubrications?
10. What are the functions of lubricants?
11. Write a note on solid lubricants.
12. How do extreme pressure additive work?
13. Why does graphite act as a lubricant?
14. What is axle grease and how is it prepared ?
15. Give some example of animal and vegetable oils. What are their inherited drawbacks in using as lubricants.
16. What are blended oils and why are they blended?
17. What are silicones ? Write their general formula.
18. What are antioxidants? Give some examples
19. What is hydrodynamic lubrication? Discuss its mechanism and explain why hydrocarbon oils are suitable for this type of lubrication.
20. Why hydrodynamic lubrication not possible under boundary conditions? Give a brief account of boundary lubrication and discuss its important features.
21. Write short notes on :
(i) cutting oil, (ii) cooling liquids, (iii) Blended oils, (iv) Saponification number, (v) Acid number, (vi) precipitation number, (vii) Ash content.





TUTE SHEET-7
LUBRICATION & LUBRICANTS


1. Define the following terms:
(a) Lubricant (b) Viscosity index (c) Aqua- Dag (d) Oil_dag (e) Cloud point (f) Pour Point (g) Flash Point (h) Fire point (i) Drop point (j) Aniline point (h) Oiliness.

2. Write short notes on :
(a)Carbon residue test (b) Petrol based lubricants (c) solid lubricants (d) Manufacture of grease (e) silicon lubricants (f) dibasic and esters
3. What are the various factors that dictate the choice of the lubricants
4. Explain the different theories of lubrication.
5. How are lubricating oils classified? Provide illustrations
6. Explain the role of (a) Additives (b) Anti-oxidants (c) corrosion inhibitors (d) Pour point depressant (e) Viscosity index (f) Flash point in the study of lubricants
7. Indicate the relation between viscosity index and molecular structure. Compare vis. Index of synthetic lubricants with that of mineral lubricants.
8. How do the activities functions in lubricants?
9. Explain boundary lubrications?
10. What are the functions of lubricants?
11. Write a note on solid lubricants.
12. How do extreme pressure additive work?
13. Why does graphite act as a lubricant?
14. What is axle grease and how is it prepared ?
15. Give some example of animal and vegetable oils. What are their inherited drawbacks in using as lubricants.
16. What are blended oils and why are they blended?
17. What are silicones ? Write their general formula.
18. What are antioxidants? Give some examples
19. What is hydrodynamic lubrication? Discuss its mechanism and explain why hydrocarbon oils are suitable for this type of lubrication.
20. Why hydrodynamic lubrication not possible under boundary conditions? Give a brief account of boundary lubrication and discuss its important features.
21. Write short notes on :
(i) cutting oil, (ii) cooling liquids, (iii) Blended oils, (iv) Saponification number, (v) Acid number, (vi) precipitation number, (vii) Ash content.





TUTE SHEET-7
LUBRICATION & LUBRICANTS


1. Define the following terms:
(a) Lubricant (b) Viscosity index (c) Aqua- Dag (d) Oil_dag (e) Cloud point (f) Pour Point (g) Flash Point (h) Fire point (i) Drop point (j) Aniline point (h) Oiliness.

2. Write short notes on :
(a)Carbon residue test (b) Petrol based lubricants (c) solid lubricants (d) Manufacture of grease (e) silicon lubricants (f) dibasic and esters
3. What are the various factors that dictate the choice of the lubricants
4. Explain the different theories of lubrication.
5. How are lubricating oils classified? Provide illustrations
6. Explain the role of (a) Additives (b) Anti-oxidants (c) corrosion inhibitors (d) Pour point depressant (e) Viscosity index (f) Flash point in the study of lubricants
7. Indicate the relation between viscosity index and molecular structure. Compare vis. Index of synthetic lubricants with that of mineral lubricants.
8. How do the activities functions in lubricants?
9. Explain boundary lubrications?
10. What are the functions of lubricants?
11. Write a note on solid lubricants.
12. How do extreme pressure additive work?
13. Why does graphite act as a lubricant?
14. What is axle grease and how is it prepared ?
15. Give some example of animal and vegetable oils. What are their inherited drawbacks in using as lubricants.
16. What are blended oils and why are they blended?
17. What are silicones ? Write their general formula.
18. What are antioxidants? Give some examples
19. What is hydrodynamic lubrication? Discuss its mechanism and explain why hydrocarbon oils are suitable for this type of lubrication.
20. Why hydrodynamic lubrication not possible under boundary conditions? Give a brief account of boundary lubrication and discuss its important features.
21. Write short notes on :
(i) cutting oil, (ii) cooling liquids, (iii) Blended oils, (iv) Saponification number, (v) Acid number, (vi) precipitation number, (vii) Ash content.