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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.
Q. Can you illustrate Sea Coal? Sea coal or coal dust is finely ground soft coal (pulverized coal). It is added to moulding sand used to make ferrous castings. It tends to obta
Q. How can we use Cereals? Foundry cereal is finely ground corn flour or corn starch. It (0.25-2%) increases the green and dry strengths of the moulding sand. Since the cereal
Solid Modeling: 3-D solid modelling techniques provide the user along with complete information regarding the model. These may be quickly created without having to describe in
Explain the Hydraulically extendible Most paver manufacturers have developed hydraulically extendable paver screeds hat trail the primary or basic screed on the paver. One make
Question 1 What is the eutectoid composition in the phase diagram? Question 2 For an alloy of 40%C/60%D at 400°C, indicate the phase/s that are present. It is not neces
Solving example by this method
Choose a wire rope for a vertical mine hoist to lift a load of 55 kN from a depth of 300 metres. A rope speed of 500 metres/min is to be attained in 10 seconds.
CAST IRON: Cast iron is an important alloy of Fe and C are mostly employed within industry for its convenience to casting in intricate and superior mechanical properties. Stee
What is the turnaround time for a 10-page assignment?
Q. Define Gas Welding? Metal joining process in which the ends of pieces to be joined are heated at their interface by producing coalescence with one or more gas flames (such a
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