In a CAV air-conditioning system in a building, 150 cfm of outdoor air is mixed with 1350 cfm of zone air at 75 F and then enters the cooling coil. The air leaves the coil at 50 F and 95% RH. he sensible load for the zone is 2.5 tons and the zone sensible heat ratio is 0.8. Determine (in tons) the total zone load, reheat energy, ventilation load, and coil load for the following two sets of ambient conditions. a. 85 F db and 60 F wb. b. 85 F db and 75 F wb. Draw some conclusions from your results.

When using the ohmmeter function of a digital multimeter, the leads are placed in what position relative to the component being tested? a. parallel b. control c. series d. line

The force on a cutting tool are 2600n vertically downward and 2100 horizontal. determine the resultant force acting on the tool and the angle at which it acts.

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.