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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.
Two bodies of mass 1 kg and 2 kg move towards each other in mutually perpendicular direction with velocities 3m/s and 2 m/s respectively. If the bodies stick together after collisi
Q. General corrosion rates of castings? Austenitic stainless steels (300 series) are very resistant to caustic in concentrations up to 50% and temperatures below 200 o F (95 o
Limitations of G T
Piston Area : The area of a circle of diameter equal to the cylinder bore is called the piston area and is designated by the letter A and is usually expressed in square centimetr
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(a) A mass of 1 kg is to be supported on a spring having a stiffness of 9800N/m. The damping coefficient is 5.9 N-sec/m. Calculate the natural frequency of the system. Determine al
What is relative humidity
Projection Welding Projection welding is similar to spot welding but for the fact that the welding takes place at the projections on the surface of the metals and flat shaped e
In a double acting vertical steam engine running at speed of 360 r.p.m., cylinder diameter is 25 cm, stroke is 30 cm, diameter of piston rod is about 3.75 cm and length of the conn
Necessity of Lubrication To lubricate the various parts of engine. The supplementary function of lubrication is to cool and clean the engine parts. To prevent en
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