A.minimize wear
B.prevent corrosion
C.both (A) and (B) above
Related Mcqs:
- Antiosidants are added in gasoline
- The gaskets are used to:
- In control cooling water system, chromates, phosphates and silicates are added to water
- A surface damage which results when two surfaces in contact experience light periodic relative motion is
- The design of gate should be such as to
- Piston ring are plated with chromium, cadmium or phosphate to
- Which one of the following does not fall under the category of hoisting equipment?
- In cross or regular lay ropes
- Window key Shift M?
- In case of skip hoists, the hoisting speed generally ranges from
