Engineering, 03.07.2020 18:01 Juicebox18
Unos rieles de ferrocarril están fabricados con un acero con 0.25 % de C, que posee un coeficiente de dilatación lineal α 1.1 x 10 -5 C-1y fueron instalados una época del año en que la temperatura promedio fue de 5 oC. Si en la unión de los rieles, cuya longitud es de 11.9 m, se deja un espacio de 5 mm, ¿cuál es la temperatura más alta que puede ser tolerada antes de introducir tensiones al material?
Answers: 2
Engineering, 03.07.2019 14:10
Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned
Answers: 2
Engineering, 04.07.2019 18:10
The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false
Answers: 1
Engineering, 04.07.2019 18:10
An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature
Answers: 2
Engineering, 04.07.2019 18:10
An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0
Answers: 3
Unos rieles de ferrocarril están fabricados con un acero con 0.25 % de C, que posee un coeficiente d...
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