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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.
THE WELDING ARC The heat that is developed at the cathode and anode of an arc discharge is able to melt most of the metals and alloys. Hence, the arc is used as an intense heat
Explain Wilson HArtnell Governor
At a point in a rectangular block of elastic material under strain, there is a tensile stress of 50MPa on one plane and a compressive stress of 30 MPa on a plane at right angles. T
Illustarte the following (a) Acceptance sampling (b) OC-Curve
Calculate strength coefficient: A copper specimen of 64 mm gauge length and 12.80 mm dia. was tested in tension. Following two diameters were recorded in the plastic range of
HOW HEAT TRANSFER TAKES PLACE
SIGNIFICANCE OF DEFECTS IN WELDS In the correct sense of the word, a defect is a rejectable discontinuity or a flaw of rejectable nature. Certain flaws acceptable in one t
Induction Pressure Welding In this process, the current is induced by high frequency induction process in the job. Due to electrical induction the job is heated. When a suitabl
Supports for Rigid Bodies (Space Structures): The primary step in solving equilibrium problems is to draw free-body diagram. Isolate the body through its surrounding. Replace
How does the Two Stage Reciprocating Air Compressor works?
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