Thick film lubrication describes a phenomenon where two surfaces are _______ separated.
Explanation: There is no contact between the two surfaces.
Hydrodynamic bearing is a self-acting bearing.
Explanation: The pressure in the bearing is created within the system due to rotation of the shaft.
A journal bearing is a ______ contact bearing working on the hydrodynamic lubrication and which supports load in____ direction.
Explanation: This is how journal bearing works. It derives its name from the portion of the shaft inside the bearing.
Partial bearing is preferred over journal bearing.
Explanation: Friction losses are lesser and construction is simple.
Temperature rise in partial bearing is ____ than full bearing.
Explanation: Due to lesser friction, temperature rise is less.
A clearance bearing is design accurately to keep the radius of journal and bearing equal.
Explanation: Journal radius is kept smaller.
Fitted bearing must be partial bearing.
Explanation: To provide space for lubricating oil.
Footstep bearing is an axial load bearing.
Explanation: It is a thrust bearing in which shaft end is in contact with bearing surface.
Hydrostatic and hydrodynamic lubrication are the same thing.
Explanation: In hydrodynamic, motion is provided by the shaft while in hydrostatic the motion is provided by an external source.
If we exclude the cost factor, which bearing is preferred?
Explanation: High load capacity, no starting friction and no rubbing action.