Grease:
a. Is a semi-liquid
b. Is an excellent high-speed, low load lubricant
c. Attracts dirt and water to bearings, leading to premature failure
d. Is likely to drip or splash from bearings and therefore is rarely used in the textile and food industries
e. Can be used under conditions where oil may leak away and leave the bearing dry
Answer: E
Learn More :
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:
- 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
- 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: