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A piece of Al weighing 6 kg and initially at a temperature of 300OC is suddenly immersed in a fluid at a temperature of 20OC. The convectice heat transfer coefficient is 58 W/m2. 0C. Taking the Aluminum as a sphere having the same weight as that given, estimate the time require to cool the aluminum to 90 0C using the lumped-capacity method of analysis.
how to measure material hardness
Question 1 What is the eutectoid composition in the phase diagram? Question 2 For an alloy of 40%C/60%D at 400°C, indicate the phase/s that are present. It is not neces
Q. What do you understand by Carburization? Carburization is initiated by the adsorption of carbon in contact with the surface of the metal and may progress by diffusion along
Evaluate stress in fibre: Example, the matrix material can be stressed to its full strength of 80 MPa, calculate the allowable % of broken fibres. What will be the stress in f
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I have selected Mining Industry and have selected three rival Mining Companies to conduct a preliminary analysis. I have done my bachelor's degree in Mechanical Engineering, I have
An experiment to determine the convection coefficient associated with airflow over the surface of a thick stainless steel casting involves insertion of thermocouples in the casting
Is there a metal that does not contain iron? Ans) Most commercially available aluminum having some other materials, but only accidental traces of iron, if any. For example, Copp
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Q. Effect on the corrosion rate of carbon steel? The velocity of the acid has a significant effect on the corrosion rate of carbon steel. The recommended velocity range for pi
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