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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.
why pre sintering needed in powder metallurgy
How are footings described and introduced properly? The selection of different types of footings and the need for reinforcing the same are discussed in this unit. Methods of de
Compare Rankine cycle with Carnot cycle: Sol.: Rankine cycle without superheat: 1 - A - 2 - 3 - 4 - 1. Rankine cycle with superheat : 1 - A - 2 - 2′ -3′ - 4 - 1.
What is the clear difference between gravitational potential and gravitational potential energy ? Ans) A body A of mass m is placed in the gravitational field of a body B of mass
Three Particle System Suppose we have two particles of masses m 1 and m 2 already fixed in space at distance r 12 from each other. Let us bring in a third particle of
why constant volume line has more slop tha constant pressure line in T-S diagram
mostly what aspects trouble mechanical engineers?
Cast Iron Electrodes There are three types of electrodes for welding of cast ions. a) Monel-cored electrodes (30 % Ni 70 % Cu) b) Fe-Ni (40 % Ni) c) Ni-electrodes (97 E) These
A tensile test on a specimen having an initial diameter of 13.11 mm and an initial gauge length of 200.0 mm, gave the following data:
Steam flowing at a rate of 3200 lbm/hr enters an adiabatic nozzle. The initial condition of steam is: P1 = 250 psi, v1=620 ft/min, v1 = 2.4 ft3/lbm and u1 = 1125.5 Btu/lbm. The ste
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