Engineering, 26.07.2019 17:30 liyah2459
Steady flow is maintained between two concentric cylinders, which are rotating at constant angular velocity of one (while the other is stationary) or both cylinders. let the inner cylinder have a radius of ro, angular velocity c and temperature to, while the outer cylinder has r? ojand t, respectively. the geometry is such that the only nonzero velocity component is ue and the variables us t and p must be functions only of radius by integrating the ordinary differential equations, and based on the boundary conditions, obtain the velocity and thermal profiles: uθ(r) and t(r).
Answers: 3
Engineering, 04.07.2019 08:10
Which of the following is an easy way to remember the modified “x” tire rotation? a. nondrive wheels straight, cross the drive wheels b. drive wheels straight, cross the nondrive wheels c. drive wheels crossed, nondrive wheels straight d. drive wheels crossed, nondrive wheels crossed
Answers: 1
Engineering, 04.07.2019 18:10
Which of the following components of a pid controlled accumulates the error over time and responds to system error after the error has been accumulated? a)- proportional b)- derivative c)- integral d)- on/off.
Answers: 2
Engineering, 04.07.2019 18:10
Which of the following controllers anticipates the future from the slope of errors over time? a)-proportional b)-on/off c)-integral d)-derivative.
Answers: 2
Engineering, 04.07.2019 19:10
Asteam is contained in a rigid tank with a volume of 1 m3. initially, the pressure and temperature are 7 bar and 500 oc, respectively. the temperature drops due to cooling process. determine: (1) the temperature at which condensation begins in °c, (2) the fraction of the total mass that has condensed when the pressure decreased to 0.5 bar. (3) the volume in m3 occupied by saturated liquid at the final state?
Answers: 3
Steady flow is maintained between two concentric cylinders, which are rotating at constant angular v...
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