Quickcomputerstips
- What are the advantages and disadvantages of lubricants?
- What is pre lubrication?
- What is the benefit of the lubrication to the engine?
- What is the purpose of pre lubricating pump?
- What can cause low oil pressure in the lube oil header of a diesel engine?
- What is the main disadvantage of using vegetable oil based lubricant?
- What is the disadvantage in using a lubricant in forging operations?
- What is the advantage of greasing and oiling?
- What are the advantages of applying lubricant to the tools and equipment regularly?
- What is an advantage of using a solid lubricant?
- Which of the following are the disadvantages of solid lubricants Mcq?
- What is the advantage of greasing?
What are the advantages and disadvantages of lubricants?
Grease lubrication has clear advantages over oil lubrication: Grease does not leak easily, it has sealing properties, and it protects bearing surfaces from corrosion. Its disadvantages are grease-life limitations and a limited cooling ability.
What is pre lubrication?
Beyond significantly reducing engine wear, the engine prelube system is the only such system that ensures oil pressure is built before the engine can crank. If an engine lacks oil, the prelube system keeps it from starting, preventing catastrophic damage.
What is the benefit of the lubrication to the engine?
The main role of motor oil is to lubricate the engine parts, which are constantly in friction. It thus reduces friction which tends to increase part wear. The energy lost through combustion and the friction between mechanical parts causes the engine temperature to rise.
What is the purpose of pre lubricating pump?
Pre-Lubrication Pumps
They provide a supply of oil to the bearings prior to start up and limit the length of time that boundary lubrication exists, and shorten the time when hydrodynamic lubrication commences. They must be maintained and operated in accordance with the manufacturers' instructions.
What can cause low oil pressure in the lube oil header of a diesel engine?
When oil viscosity is too low or high, it may be detected as a loss of pressure in the oil supply to the engine. ... Low viscosity can be the result of a variety of factors, such as fuel dilution, incorrect lubricant viscosity selection, or excessive temperatures due to overloading or a cooling system failure.
What is the main disadvantage of using vegetable oil based lubricant?
Vegetable Oil Disadvantages
Having low oxidative stability means the oil oxidizes quickly during use if untreated. This becomes thick and polymerizing into a consistency like that of a plastic.
What is the disadvantage in using a lubricant in forging operations?
The lubricant film thickness entrained will be larger, which can reduce friction and lead to a condition where the rolls slip against the workpiece. This can lead to a damaged surface finish on the workpiece.
What is the advantage of greasing and oiling?
Explanation: Grease lubrication has clear advantages over oil lubrication: Grease does not leak easily, it has sealing properties, and it protects bearing surfaces from corrosion. Its disadvantages are grease-life limitations and a limited cooling ability.
What are the advantages of applying lubricant to the tools and equipment regularly?
The use of a lubricant reduces the heat generated when two surfaces are in motion. It smoothes the process by creating a film between the two surfaces which in turn reduces friction and improves performance and efficiency.
What is an advantage of using a solid lubricant?
Some advantages of solid lubrication are: (1) More effective than fluid lubricants at high loads and speeds. (2) High resistance to deterioration in storage. (3) Highly stable in extreme temperature, pressure, radiation, and reactive environments.
Which of the following are the disadvantages of solid lubricants Mcq?
In solid lubricants, the _________ will be low. Explanation: The coefficient of friction will be low for the solid lubricants and it is one of the disadvantages of the solid lubricants. They are stable at high temperatures also. Cleanliness of the solid lubricants is also high.
What is the advantage of greasing?
According to the Society of Automotive Engineers (SAE), in the application of grease, it provides adequate lubrication in reducing friction and in preventing harmful wear of components, in protecting against rust and corrosion and in acting as a seal to prevent entry of dirt and water.
