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I am also doing electrophoretic coating on Mg alloy in propanol suspension, but I have queries related to that is it possible that Mg(OH)2 is formed during any of the stages of HAP coating.
5000kg of steel drives a turbine,steel enters tge turbine at a pressure of 44 bar,temperature of 450c and a liner velocity of 60m/s .the turbine delivers a shaft work at a rate of 700 kw and the rate of heat loss by the turbine is 10'4 kcal/hr.calculate the specific enthalpy associated with the process
A heat exchanger (boiler) produces dry steam at 100 from feed water at 30 at a rate of 1.5kg/s. The specific heat capacity of water is 4187 J/kgK and its specific latent heat of vaporization is 2,257,000 J/kg
Determine the conditions governing geometrical structure factor for an fcc lattice. Is reflection observed from the (111) and (211) planes of the fcc structure?
How to we know that open circuit potential (gamry setup) has become stable?
by seeing the graph
explain how test procedures produce results
of use to an engineer. Think about what sort of information they will want if they are going
to use the results of the tests to inform the design of a product, e.g. in the case of a
tensile test, the final breaking load is only one of at least five other pieces of data that
can found if the test procedure is correct. Write an explanation (about 500 words) of how
one destructive and one non-destructive test procedure can be carried out so that they
produce results that are useful to an engineer.
The length of Lead piping in the plant is 50 m long at a temperature of 160C. When hot water flows
through it the temperature of the pipe rises to 800C. The coefficient of linear expansion of lead is
29 10-6 0 K
-1
.
i) Determine the change in length of the hot pipe.
This part of the task provides part of the evidence for the grading criterion P8.
ii) Determine the compressive force induced in the pipe if it is rigidly held and expansion is
prevented.
This part of the task provides the evidence for the grading criterion M4.
Using diagrams to illustrate your answers, describe the following failure modes and the
scientific principles that relate to them:
1. ductile/brittle fracture
2. fatigue
3. creep.
For each, make reference, where appropriate, to loading conditions, grain size, surface
finish, stress concentrations, the appearance of the failed surface, stages of creep,
effects of temperature.
A heat exchanger produces dry steam at 100°C from feed water at 30°C at a rate of 1.5 kgs−1. The heat exchanger receives heat energy at a rate of 600 kW from the fuel used. The specific heat capacity of water is 4187 Jkg−1K−1 and its specific latent heat of vaporisation is 2257 Jkg−1.
i) Determine the heat energy received per kilogram of steam produced.
TASK 1
A brass tie bar of length 500 mm and diameter 20 mm undergoes a change in temperature from 25°C to 135°C. The linear expansivity of copper is 19 × 10−6°C−1 and its modulus of elasticity is 84 Gpa.
i) Determine the change of length that takes place.
This part of the task provides part of the evidence for the grading criterion P8.
ii) Determine the compressive force induced in the bar if it is rigidly held and expansion is prevented.
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