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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.
Can you Differentiate between : Dynamometer and Brakes. Absorption Dynamometer and Transmission Dynamometer.
A gear drive is needed to transmit a maximum power of 22.5KW. The velocity ratio is 1:2 and r.p.m. of the pinion is 200. The centre distance between the shafts can be taken as 600m
Illustrate vacancy defect and screw dislocation with diagram. Also show the induced nature of stress and stress by mean of diagram. Illustrate interstitial defect and edge disl
microscopic and macroscopic approch
actual division 2km is shown as 1 cm in a map.construct a clean scale to measure km which can travel a distance upto 30 km.Show measurement of 18 km in the scale
Nitrides, Silicides and Sulfides Nitrides contain very high melting point but initiate to oxidize at low temperature. They have poor resistance also to chemicals. Boron nitrid
chemical milling is used in aircraft plant to create pockets in wing sections made of an aluminium alloy. the starting thickness of one work part is 20 mm.a series of rectangular s
Composite materials consist of two or more distinct components. Generally we refer to a matrix and a reinforcement . The reinforcement can be in the form of fibres (continuous
Kinematics Equations Kinematics deals with problems involving distance, velocity, time and constant acceleration. The restraint that acceleration is a constant for these problem
diagram
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