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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.
Single piece pattern These are inexpensive and the simplest type of patterns. As the name indicates, they are made of a single piece as shown in Figure.2.2 this type of pattern
WHATIS CG OF A WIRE BENT IN THE FORM OF A QUARTER ELLIPSE
Isolated System: In an Isolated system, neither energy nor masses are permitted to cross the boundary. The system has constant mass and energy. No such system exists physicall
Condition for Carnot theorem - thermodynamics: 1 . If T 1 = T 2 ; No work, = 0 2 . Higher the temperature difference, greater the efficiency. 3. For the same
Q. What do you mean by Flares and Vents? A vent is a potential gas fuel source and a potential liquid fuel source due to carry-over from the vent. This is also true for a flare
Create Visual Basic function ffactor(Re, rr) that calculates the Darcy-Weisbach friction factor in a pipe or duct, where Re is the Reynolds No. and rr is the relative roughness, us
(a) Briefly explain the various efficiency terms associated with an engine. (b) A four cylinder engine running at 1200 rpm delivers 20 KW. The average torque when one cylinder w
WELDING ARC PHYSICS Electric arc as an intense source of heat is employed in welding of materials. In the field of welding techniques, arc welding processes constitute a major po
Determine the velocity and acceleration of a particle: The motion of a particle is determined by the equation s = t 4 - 3 t 3 + 2 t 2 - 8 , where s is in metres and t in se
Jewels can only be removed for polishing from either end of the necklace
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