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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.
what are the necessery calculation required to design a gripper?
If the allowable shear stress for each of the 10-mm-diameter steel pins at A, B, and C is tallow = 90 MPa, and the allowable normal stress for the 13-mm-diameter rod is sallow = 15
Find out its centre of gravity: A square plate of uniform thickness and density is bent along M 1 M 2 till corner C coincides along with centre C′. Find out its centre of gr
intial speed .
Keywords used in appropriate technology: Hill Roads : Roads in hilly and mountainous terrain. Landslides : The slippage of mass of hill face. Retaining Walls : Str
is strain in bending important parameter to consider?
What do you mean by centrifugal casting ? How are the centrifugal method classified ?
Transformation Hardening The main features of the laser as a heat source for transformation hardening are: (A) Clean energy source. (B) Energy is localised: no heat spillage.
a) Determine the relative error if 2/3 is approximate to 0.667. b) √29 = 5.385 and √Π= 3.317 Correct to 4 significant figures. Determine the relative errors in their sum and dif
Cast Al Alloys Low melting temperature, good surface finish and insolubility to gases except H 2 are characteristics of these alloys. Significant drawback of cast aluminium a
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