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A sliding bearing which operates without any lubricant present, is called
- a)zero film bearing
- b)boundary lubricated bearing
- c)hydrodynamic lubricated bearing
- d)hydrostatic lubricated bearing
Correct answer is option 'A'. Can you explain this answer?
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A sliding bearing which operates without any lubricant present, is cal...
Zero Film Bearing
A sliding bearing which operates without any lubricant present is called a zero film bearing. This type of bearing relies on the absence of a lubricant film between the sliding surfaces, and instead operates with direct metal-to-metal contact.
Boundary Lubricated Bearing
A boundary lubricated bearing, on the other hand, operates with a thin layer of lubricant between the sliding surfaces. This lubricant helps to reduce friction and wear, providing a protective barrier between the sliding surfaces.
Hydrodynamic Lubricated Bearing
A hydrodynamic lubricated bearing operates with a thick film of lubricant that is generated by the relative motion of the sliding surfaces. This film of lubricant helps to separate the sliding surfaces, reducing friction and wear.
Hydrostatic Lubricated Bearing
A hydrostatic lubricated bearing operates with a pressurized lubricant that is supplied to the bearing through an external source. This pressurized lubricant creates a barrier between the sliding surfaces, preventing direct metal-to-metal contact.
Explanation
The correct answer to the given question is option 'A' - zero film bearing. This type of bearing operates without any lubricant present between the sliding surfaces. It relies on direct metal-to-metal contact, which can result in higher friction and wear compared to lubricated bearings.
Zero film bearings are typically used in applications where lubrication is not feasible or desirable. For example, in high-temperature environments where conventional lubricants may break down or evaporate, zero film bearings can be used to provide support and reduce friction.
Since zero film bearings do not rely on lubrication, they require careful design and material selection to ensure proper operation and longevity. The sliding surfaces need to be made from materials that can withstand the direct metal-to-metal contact without excessive wear or damage.
In conclusion, a sliding bearing that operates without any lubricant present is called a zero film bearing. This type of bearing relies on direct metal-to-metal contact between the sliding surfaces, and is used in applications where lubrication is not feasible or desirable.
A sliding bearing which operates without any lubricant present is called a zero film bearing. This type of bearing relies on the absence of a lubricant film between the sliding surfaces, and instead operates with direct metal-to-metal contact.
Boundary Lubricated Bearing
A boundary lubricated bearing, on the other hand, operates with a thin layer of lubricant between the sliding surfaces. This lubricant helps to reduce friction and wear, providing a protective barrier between the sliding surfaces.
Hydrodynamic Lubricated Bearing
A hydrodynamic lubricated bearing operates with a thick film of lubricant that is generated by the relative motion of the sliding surfaces. This film of lubricant helps to separate the sliding surfaces, reducing friction and wear.
Hydrostatic Lubricated Bearing
A hydrostatic lubricated bearing operates with a pressurized lubricant that is supplied to the bearing through an external source. This pressurized lubricant creates a barrier between the sliding surfaces, preventing direct metal-to-metal contact.
Explanation
The correct answer to the given question is option 'A' - zero film bearing. This type of bearing operates without any lubricant present between the sliding surfaces. It relies on direct metal-to-metal contact, which can result in higher friction and wear compared to lubricated bearings.
Zero film bearings are typically used in applications where lubrication is not feasible or desirable. For example, in high-temperature environments where conventional lubricants may break down or evaporate, zero film bearings can be used to provide support and reduce friction.
Since zero film bearings do not rely on lubrication, they require careful design and material selection to ensure proper operation and longevity. The sliding surfaces need to be made from materials that can withstand the direct metal-to-metal contact without excessive wear or damage.
In conclusion, a sliding bearing that operates without any lubricant present is called a zero film bearing. This type of bearing relies on direct metal-to-metal contact between the sliding surfaces, and is used in applications where lubrication is not feasible or desirable.
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A sliding bearing which operates without any lubricant present, is calleda)zero film bearingb)boundary lubricated bearingc)hydrodynamic lubricated bearingd)hydrostatic lubricated bearingCorrect answer is option 'A'. Can you explain this answer?
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