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The wear resistance of a steel shaft is to be improved by hardening its surface. This is to this case the initial carbon content of the steel is 0.15 wt%, and a carbon content of 0.75 wt% is to be established at a position 0.65 mm below the surface. Furthermore, the surface concentration is to be maintained constant, but may be varied between 1.2 and 1.4 wt% C. Specify an appropriate heat treatment in terms of surface carbon concentration and time, and for a temperature between 1000°C and 1200°C.
a mass of 3 kilograms of steam at 2 mpa and 250degc are contained in a rigid tank. how much heat must be removed from
Water at 150C flows in 1½-inch Sch 40 steel pipe with a flow velocity of 2.86 m/s. The pipe expands to 4-inch Sch 40.
A reservoir discharges into a 4-inch new cast iron pipe, as shown below. Find the velocity and discharge in the pipe. Consider friction, but neglect minor losses.
a tank open to the atmosphere initially contains 2 lb of liquid water initially at 80degf and 0.4 lb of ice initially
The wash still in a whisky distillery uses mechanical vapour re-compression as shown in the simplified diagram of the Figure shown below. The vapour from the still is at 80° C. Take a minimum temperature difference between the vapour leaving the stil..
two blocks a and b of mass 8 kg and 12 kg respectively hang from a cable which passes over a pulley of negligible mass.
steam enters the adiabatic condenser i.e.heat exchange of a steam power plant at 20 kpa 95 percent quality and with a
Needing a writing help with a 3-4 page paper on the Case Study 6-2 Johnson & Johnson's Enterprise Architecture, this is from Managing and Using Information Systems by Pearson & Saunders.
what is the pressure difference over the manometer in newtons per meter?
Create a window apllication in java
a four foot diameter reel of wire pays out 250 feet of conductor wire in two minutes. what is the average angular
you are asked to design a solid circular shaft of minimum cost that is 1.3 m long and has to twist less than 3 degrees
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