Which of the lubricant is most suitable for clocks and watches?
The classical type (especi- ally as modified) is a better lubricant and is suited for commercial watches and clocks.
Which lubricant is suitable for watches?
Answer: Moebius 8200 grease is sometimes specified for mainspring barrels and is a long-time standard product in the industry, particularly for handwind watches. It can also be used as a stem and winding gear lubricant grease on many older watches.
Which of the following is used as a lubricant Mcq?
Graphite is best suited for lubrication in air. It is a mineral made of loosely bonded sheets of carbon atoms, giving it a slippery texture that makes it a very effective lubricant.
What lubricant is best for rolling Mcq?
12. What is the best lubricant for tractor roller? Explanation: Generally, grease is used for the tractor rollers as they are high pressure and low speed vehicles. Grease is a cheaper one.
Do you oil a clock escapement?
Leave the clock face down as you do it and allow the oil to permeated. Don’t overdo it. … The only other place to add a spot of oil is on the pallets of the escapement, to allow the teeth of the escape wheel to slip through with minimal friction. Do not oil the teeth of the wheels or the pinions.
What is a fluid film lubrication?
Fluid film lubrication occurs when opposing surfaces are completely separated by a lubricant film and no asperities are in contact. The applied load is carried by pressure generated within the fluid, and frictional resistance to motion arises entirely from the shearing of the viscous fluid.
Is Grease a lubricant?
On the basis of its physical state, grease is classified as semi-solid lubricant.
Which is the most important property of the lubricant?
Considered the most important property of a lubricant, viscosity serves to form a lubricating film, cool machine components, and seal and control oil consumption. It has to be balanced for load, temperature and speed.
Which lubrication is used in delicate instruments like watch clocks and scientific instruments?
Explanation: Fluid Film or Thick film or Hydrodynamic lubrication: This type of lubrication is used in delicate instruments and light machines like watches, clocks, guns, etc. Hydrocarbon oils are considered to the satisfactory lubricants for fluid-film lubrication.
What kind of substances are known as lubricants Mcq?
Answer: Lubricants are the substance that decrease friction.
Which one is a synthetic lubricant Mcq?
|Viscosity||It is the fluidity of oil by which it can withstand high pressure or load without squeezing out from the bearing surface|
|Oiliness||Oiliness refers to a combination of wettability, surface tension, and slipperiness.|
|Flashpoint||It is the temperature at which the vapor is given off from the oil.|
Which of the following is not liquid lubricant Mcq?
Water is not a lubricant.
Which type of lubrication system is used in 2 stroke engine Mcq?
Which type of lubrication system is used in two-stroke engine? Explanation: The mist lubrication system is used where crankcase lubrication is not suitable. In a two-stroke engine, as the charge is compressed in the crankcase, it is not possible to have the lubricating oil in the sump.
What is the function of lubricant Mcq?
Question 1: The purpose of lubrication is
To reduce friction.