In a yogurt-filling line, the containers are filled with 1 kg of yogurt. The mass of the yogurt is measured while the filling nozzle is open. The nozzle flow rate is 0.25 kg per second. Several factors affect the flow rate, including the density and the viscosity of the yogurt, which, combined, can introduce an uncertainty of about 1 % of the flow, based on statistical analysis of the data. The dispensing time of the yogurt is controlled mechanically through a cam system. The uncertainty in the time during which the nozzle is open was established to be 0.1 sec in a calibration process. (a) Calculate the filling time of each container. (b) Categorize each of the foregoing uncertainties as systematic or random. (c) Calculate the uncertainty in the mass of the filled yogurt containers. (d) If the plant managers decide to reduce the uncertainty in the mass of the yogurt, on what do you suggest they concentrate?
CCE 101 Dr. Pestana Week 2 Notes Communication as a Construction/Civil Engineer Summary First impressions matter Be effective and professional when communication, especially in written form Presentations can be a great way to communicate when done effectively Know the basics of negotiating First Impressions The DOs Dress appropriately Firm handshake Good eye contact Good posture The DON’Ts Weak or no handshake Bad eye contact and posture Lack of responsiveness Poor grooming habits Bad attitude (ego, aggressive, condescending) Written Communications Emails Used to send information or make a request o DO be respectful and clear with your int