The lubricant performs a number of functions. Indicate which of the following are the most important:
1. reduce wear
2. temperature control
3. reduce corrosion
4. reduce friction
a) 1, 2
b) 2, 3
c) 1, 3
d) 1, 4
e) 3, 4
Answer: D
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Power Engineering Chapter 76
- Which liquid lubricant is the most commonly used class?
- Aluminum Base Greases may be used for temperatures up to __°C.
- Barium and Lithium Base Greases are suitable for extreme low temperatures __°C.
- Sodium (Soda) Base Greases are suitable for temperatures as high as ___°C.
- Calcium (Lime) Base Greases are not suitable for use where temperatures exceed __C.
- The semi-solid lubricants or greases are produced by combining a ___ lubricant, usually petroleum oil, with a __ agent.
- A material that is commonly used as a solid lubricant is:
- Which one is NOT a service a lubricant must provide:
- High viscosity oils are normally used for the following applications:
- Oil additives
- Which type of grease is the cheapest and most commonly used?
- Lubricant for an anti-friction bearing is
- A semi-solid lubricant:
- Relative to lubrication, one place where wear is beneficial is
- The cheapest and most commonly used grease is:
- Greases are a mixture of mineral oil and:
- The point at which oil will give off enough vapour to ignite and burn continuously is known as the _____ point.
- The resistance of a liquid to internal deformation or shear is known as:
- All semi-solid lubricants:
- Grease is not a suitable lubricant:
- High capacity steam turbine oils should:
- The oil for a refrigeration compressor must:
- If an oil's viscosity changes much with little temperature change, it will then have a:
- The majority of lubricants are: