A technician is doing electrical work on HVACR equipment and he needs to be able to control the AC motor speeds. What can the technician use

Assuming compressible flow of air and that the measurements are done at flagstaff a pitot static tube that gives the difference of total and static pressure measures 0.35 m of mercury. what is the velocity of air? assume the temperature to be 300k. (submit your excel or matlab calculation sheet)

Machinery that is a key part of the process and without which the plant or process cannot function is classifed as: (clo4) a)-critical machinery b)-essential machinery c)-general purpose machinery d)-none of the specified options.

Inadequate stores control is not an obstacle to effective work order system. (clo4) a)-true b)-false