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Problem 1 Provider JCN Bell Comtron Choose? No. of problems 50 100 250 MTBF (hours) Mean Time to Reach Customer Mean Time to Fix Problem 3 2 1 2 1 0.5 System Availability Problem
2 a. Fixed cost Variable cost Revenue $5,000 $15 $50 Breakeven pt.
b. Old process New process Fixed Cost $25,000 $5,000 Variable Cost $10 $15 Pt of Indifference For what volume of demand should Patricia choose this process?
Problem 3 $12 Input: Label each process and input its fixed and variable cost. $10 Process Make Buy Fixed Cost $200 $75 Make Buy $8 Variable Cost $0.30 $6 $1.13 none $4 Output: $2 Pairwise Comparison Make Buy Point of $0 Indifference Unit s Graph:
Volume Recommendation: Make Buy Choose the process with the lowest cost above and below the points of indifference. Use the graph to help visualize which process to choose at what levels of demand.
HEAT TRANSFER PROBLEMS NO16- Water flowing in a steel pipe of diameter 0.02 m is to be cooled from 40 to 30 oc . The velocity of water in the steel pipe is 1.5 m/s .
Defluorination & adhesion properties, Using ion bombardment-If Teflon is deflorinated to increase it's adhesion properties, then what would the changes in surface characteristics be?
12. Comparing emitted Auger electrons (AES, Auger electron spectroscopy) with X-rays (EDX / EDS, energy-dispersive X-ray spectroscopy), what is the difference in the analysed sample volume (i.e. volume of the sample from which the signal comes)?
Focus Question: How does the volume of mole of methane gas at 300 bar and 298K compare to the volume of one mole of an ideal gas at 300 bar and 298K?
Determine the membrane area needed. Given: Membrane properties and mass transfer information - Develop a process schematic
Use molecular orbital theory to predict whether the bond order in the superoxide ion, O2-, should be higher or lower than the bond order in neutral O2 molecule.Is the bond order of O2- higer or lower than that of O2?
A mixture containing 98 mol% methanol and 2 mol% of an inert contaminant is available as a feed to a formaldehyde plant. The fresh feed to a process consists of 1000 kmol/h of this mixture along with 200 kmol/h of oxygen. All of the oxygen is consume..
The stack gas emerges at 760 mm Hg. Calculate the percentage conversion of hexane, the percentage excess air fed to the burner, and the dew point temperature of the stack gas.
Consider that you are a senior consulting engineer and that you need to explain the topic in a written report to your customer, who is the managing director of a large company, and a commerce or law graduate.
The vessel is 4 m internal diameter and 20 m long. Estimate the minimum wall thickness required to resist this pressure, for the cylindrical section and the heads. Take the design pressure as 12 bar and the maximum allowable stress for the materia..
A storage tank is purged continuously with a stream of nitrogen. The purge stream leaving the tank is saturated with the product stored in the tank.
you are an ehamps professional returning home from your plant on a summer friday afternoon at about 4 p.m. you have
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