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The following ethical scenario was obtained from http://www.cwru.edu/wwwethics.
You are an engineer charged with performing safety testing and obtaining appropriate regulatory agency or outside testing laboratory approvals of your company’s product. The Gee Whiz Mark2 (GWM2) has been tested and found compliant with both voluntary and mandatory safety standards in North America and Europe. Because of a purchase-order error and subsequent oversights in manufacture. 25,000 units of GWM2 were built that are not compliant with any of the North American or European safety standards. A user would be more vulnerable to electric shock from one of these units than from a compliant unit. Under some plausible combinations of events, the user of the bad unit could be electrocuted. Retrofitting these products to make them compliant is not feasible because the rework costs would exceed the profit margin by far. The company agrees that because of this defect the agency safety labels will not be attached to the bad units, as per the requirements of the several agencies. Only two options exist: (a) Scrap the units and take the loss, or (b) sell the units. An employee of the company notes that many countries have no safety standards of any kind for this type of product. It is suggested that the bad units be marketed in these countries. It is pointed out that many of these nations have no electrical wiring code; or if codes exist, they are not enforced. The argument is thus advanced that the bad GWM2 units are no worse than the modus operandi of the electrical practice of these countries and their cultural values. Assume that no treaties or export regulations would be violated.
- a. What would be your recommendation?
- b. Suppose one of the countries under consideration was the country of origin for you or your recent ancestors. Would this affect your recommendations?
- c. Now suppose you are not asked for a recommendation, only an opinion. What is your response?
- d. Suppose it is suggested that the bad units be sold to a third party, who would very likely sell the units to these countries. Your comments?
- e. You are offered gratis one of the bad units for your use at home, provided that you sign a release indicating your awareness of the condition of the unit and that it is given to you as a test unit. Assume you cannot retrofit it and that the product could be very useful to you. Would you accept the offer?
- f. Suppose it is suggested that the offer stated in part (e) be made to all employees of the company. Your comments?
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Chapter 3 Solutions
ENGINEERING DESIGN PROCESS
- A pump delivering 230 lps of water at 30C has a 300-mm diameter suction pipe and a 254-mm diameter discharge pipe as shown in the figure. The suction pipe is 3.5 m long and the discharge pipe is 23 m long, both pipe's materials are cast iron. The water is delivered 16m above the intake water level. Considering head losses in fittings, valves, and major head loss. a) Find the total dynamic head which the pump must supply. b)It the pump mechanical efficiency is 68%, and the motor efficiency is 90%, determine the power rating of the motor in hp.given that: summation of K gate valve = 0.25check valve=390 degree elbow= 0.75foot valve= 0.78arrow_forwardA pump delivering 230 lps of water at 30C has a 300-mm diameter suction pipe and a 254-mm diameter discharge pipe as shown in the figure. The suction pipe is 3.5 m long and the discharge pipe is 23 m long, both pipe's materials are cast iron. The water is delivered 16m above the intake water level. Considering head losses in fittings, valves, and major head loss. a) Find the total dynamic head which the pump must supply. b)It the pump mechanical efficiency is 68%, and the motor efficiency is 90%, determine the power rating of the motor in hp.arrow_forwardThe tensile 0.2 percent offset yield strength of AISI 1137 cold-drawn steel bars up to 1 inch in diameter from 2 mills and 25 heats is reported as follows: Sy 93 95 101 f 97 99 107 109 111 19 25 38 17 12 10 5 4 103 105 4 2 where Sy is the class midpoint in kpsi and fis the number in each class. Presuming the distribution is normal, determine the yield strength exceeded by 99.0% of the population. The yield strength exceeded by 99.0% of the population is kpsi.arrow_forward
- Solve this problem and show all of the workarrow_forwardI tried to go through this problem but I don't know what I'm doing wrong can you help me?arrow_forwardGenerate the kinematic diagram of the following mechanisms using the given symbols. Then, draw their graphs and calculate their degrees of freedom (DoF) using Gruebler's formula. PUNTO 2. PUNTO 3. !!!arrow_forward
- Create a schematic representation of the following mechanisms using the given symbols and draw their graphs. Then, calculate their degrees of freedom (DoF) using Gruebler's formula. PUNTO 6. PUNTO 7.arrow_forwardhow the kinematic diagram of the following mechanisms would be represented using the given symbols? PUNTO 0. PUNTO 1. °arrow_forwardCreate a schematic representation of the following mechanisms using the given symbols and draw their graphs. Then, calculate their degrees of freedom (DOF) using Gruebler's formula. PUNTO 4. PUNTO 5. (0) Groundarrow_forward
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