A compacted fill is to be constructed to support a new highway. The fill material will be taken from a location (“borrow pit”) where the in-place dry unit weight is 105 pcf and the water content is 9%. The soil will be excavated from the borrow pit, moistened to increase the water content to 13.5% and then compacted to a final dry unit weight of 118 pcf. The total final volume of the compacted fill will be 250,000 yd3.

The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false

Which of the following controllers anticipates the future from the slope of errors over time? a)-proportional b)-on/off c)-integral d)-derivative.

For each of the following process: a) sketch the p-v diagram, b)sketch t-s diagram, c) sketch t-v diagram, d) sketch the boundary work on one of the diagrams (a, b or c) and e) sketch the reversible heat transfer on one of the diagrams (a, b or c): 1- isobaric process from compressed liquid to superheated vapor 2- isothermal process from compressed liquid to superheated vapor 3- isentropic process from compressed liquid to superheated vapor