Engineering, 06.07.2019 03:10 tyheath42
Steel balls 12 mm in diameter are annealed by heating to 1150 k and then slowly cooled to 400 k in an air att 325 k and h -20 w/m2 k. assume the properties of the steel to be k- 40 w/m k, p 7800 kg/m3, and cp 600 j/kg k. a. determine whether lumped system method can be used to analyze this problem and if so why" b. determine the time required for the cooling process. c. determine the total amount of heat lost from each ball to the ambient air
Answers: 1
Another question on Engineering
Engineering, 04.07.2019 18:10
Which of the following ziegler nichols tuning methods the response of the controller to a step input should exhibit an s-shaped curve? a)-open loop mode b)-closed loop mode c)-both modes (open & closed) d)-none of the modes (open & closed)
Answers: 3
Engineering, 04.07.2019 19:10
A)-in the process of engineering design, explain the contribution of material selection. b)- explain the procedure of synthesis as is employed in engineering design. c)- is there any relationship between ergonomics and engineering design? explain. d)- safety consideration in engineering design includes human, product and the enviroment . explain how safety will be incorporated into the design?
Answers: 3
Engineering, 04.07.2019 19:10
Analyze the factors that influence the choice between the following pairs of processes to make the products indicated: i) sand casting versus die casting of an electric-motor housing ii) thread rolling versus machining of a bolt for high-strength application. (co3/c5)
Answers: 3
You know the right answer?
Steel balls 12 mm in diameter are annealed by heating to 1150 k and then slowly cooled to 400 k in a...
Questions
History, 18.05.2021 19:10
English, 18.05.2021 19:10
Biology, 18.05.2021 19:10
Mathematics, 18.05.2021 19:10
Mathematics, 18.05.2021 19:10
Mathematics, 18.05.2021 19:10
Mathematics, 18.05.2021 19:10
Arts, 18.05.2021 19:10
Spanish, 18.05.2021 19:10
