Consider a flat plate with parallel airflow (top and bottom) characterized by [infinity] u[infinity]= 5 m/s, [infinity] t[infinity]= 20°c. determine the average convection heat transfer coefficient, convective heat transfer rate, and drag force associated with an l= 2.8-m-long, w= 2.8-m wide flat plate with a surface temperature of ts= 50°c. assume the critical reynolds number is 5x105.

Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.

Which of the following refers to refers to how well the control system responds to sudden changes in the system. a)-transient regulation b)- distributed regulation c)-constant regulation d)-steady-state regulation

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)