A120 cy per hr maximum output pump is used to place the concrete for a 200 cy slab. the concrete is supplied by 8 cytransit-mix trucks arriving to the site on 12 min intervals. the concrete batch plant is located 5 miles from the site. averagetruck speed is 30 mph. each transit-mix truck takes, on average, 10 min to discharge. the placement crew size is 7 workers. average worker output is 5 cy of concrete per hr. (a) how long will the operation take? (b) how can the operation bereorganized more effectively?

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

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.