The heat flux that is applied to the left face of a plane wall is q′′=20 W/m2. The wall is of thickness L = 10 mm and of thermal conductivity k=12 W/m∙K. If the surface temperatures of the wall are measured to be 50 ℃ on the left side and 30 ℃ on the right side, do steady-state conditions exist? slader

Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.

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.

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)