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a) State FOUR factors that affect the effectiveness of hydrodynamic lubrication as a means of reducing friction between components.
b) Under what conditions would boundary lubrication be used rather than hydrodynamic lubrication and what would cause this to happen?
c) Briefly describe THREE uses of lubricants other than for lubrication.
Match plate pattern These are extensions of the previous type. Here the cope and drag patterns along with the gating and the risering are mounted on a single matching metal or
Gear Boxes : Motorcycle engines do not produce their full power at all RPM. There is very little power at idle and the power goes up as the engine RPM increases. At a certain RPM,
Age-hardening of Aluminium Alloys In specific alloys precipitation from a single phase may arise. The precipitate phase might be in form of determine sub-microscopic particles
Q. Ultrasound Bolt Load Monitoring? Ultrasound measurement of bolt stresses, using ‘Bolt Scope', should be used on: • All bolts tightened by tensioning. • All bolts in hy
Determine reactions at supports: Determine reactions at supports of supported beam of 6m span carrying increasing load of 1500N/m to 4500N/m from one end to another end.
Ratio of belt tension: For Open belt drive: Angle of contact (θ) for larger pulley = ∏ + 2α Angle of contact (θ) for smaller pulley = ∏ - 2α For cross belt drive:
Determine the maximum pressure applied inside the shell: A thin spherical shell of 1.5 m diameter is built by joining steel plates of 8 mm thickness by riveting. The efficienc
Q. W rite different relations used in belt drive. Sol: Let: D 1 = Diameter of driver N 1 = Speed of the driver in Rotation per minute D 2 = Diameter of the driv
Estimate temperature of air at exit from compressor: The air compressor compresses atmospheric air at 0.1MPa and 27 0 C 10 times the inlet pressure. During compression heat
calculate wavelength fpr monocromatic light using newtons ring experiment notes
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