Explain design stage model and design activity model.
What will be an ideal response?
The design stage model uses the stage at which the design is at different time points during the product development to describe the design process. The design activity model describes the process as a sequence of activities that occur during the design process. These can be more detailed for each of the stages and also can incorporate several steps as the complexity of the product increases.
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What is the reflected resistance seen by the primary in Figure 14-1 if the turns ratio is 3:1 and IS is 240 mA?
A) 9000 ? B) 1500 ? C) 167 ? D) 500 ?
What could happen if you charge liquid refrigerant into a chiller that is under a deep vacuum?
A) The vacuum will draw in an excessive amount of refrigerant, causing an overcharge. B) The compressor motor amp draw will cause the motor overload to trip. C) The refrigerant will flash at a low temperature, freeze the water, and crack the chiller tubes. D) The refrigerant will fractionate when it flashes off in the chiller.
Which of the following is true of a noncondensing steam turbine? (Select all that apply.)
a. It is also called a back-pressure turbine. b. The condensate is recycled to the boiler. c. It functions like a pressure-reducing valve. d. Steam exits the turbine at a lower pressure.
The main concern with the increased use of nuclear power is the fear of an explosion or an uncontrolled heat buildup causing a backup
Indicate whether the statement is true or false