The college of engineering has an emergency water tank that is cylindrical and 3 feet high. the tank is initially filled with water at 60of and has a 3-foot diameter opening to the atmosphere at the top. the outlet at the bottom of the tank with a diameter of 0.3 inches is opened and water begins to empty out of the tank. the average velocity of the water exiting the tank is given by torricelliâs law, v = (2gh)1/2, where h is the height of the water above the center of the outlet port and g is the acceleration due to gravity. ignoring any water loss through the top opening.

determine:
a. how long it will take the water level to drop to 1.5 feet from the bottom.
b. how long it will take to drain the entire tank.

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

Inspection for bearing condition will include: (clo4) a)-color b)-smell c)-size d)-none of the above

Acommercial grade cubical freezer, 4 m on a side, has a composite wall consisting of an exterior sheet of 5.0-mm thick plain carbon steel (kst= 60.5 w/m k), an intermediate layer of 100-mm thick polyurethane insulation (kins 0.02 w/m k), and an inner sheet of 5.0- mm thick aluminium alloy (kal polyurethane insulation and both metallic sheets are each characterized by a thermal contact resistance of r 2.5 x 104 m2 k/w. (a) what is the steady-state cooling load that must be maintained by the refrigerator under conditions for which the outer and inner surface temperatures are 25°c and -5°c, respectively? (b) for power saving purpose, which wall material should be increased/reduced in. thickness in order to reduce 50% of the cooling load found in part (a)? redesign the thickness of the proposed material. 177 w/m-k). adhesive interfaces between the q=575.93 w