Engineering, 02.11.2020 20:10 moodyshaliyah01
Which examples are design tradeoffs? Choose all that apply.
a. the design of lightweight plastic materials to build car bodies to reduce weight and fuel use, instead of using stronger, heavier steel, which is more durable, but will increase fuel use
b. the design of larger wheels on mountain bikes to cycle more smoothly over rocky surfaces, instead of smaller wheels that manage tight turns easier, but cause a bumpier ride
c. the use of a paper grocery bag to carry groceries home
d. the use of lower quality, low-resolution images in a phone texting program in order to be able to send the images more quickly to a recipient
Answers: 1
Engineering, 04.07.2019 18:20
Select any two (2) areas of applications of chain-drive. (clo4) a)-permanent lubrication necessary b)-hydraulic forklift truck operation c)-rigging and heavy moving materials d)-relatively high maintenance costs e)-costlier than belt drives
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Engineering, 04.07.2019 18:20
Aquick transition of the operating speed of a shaft from its critical speed will whirl amplitude. (a) increase (b) limit (c) not affect (d) zero
Answers: 2
Engineering, 04.07.2019 18:20
Air is compressed isentropically from an initial state of 300 k and 101 kpa to a final temperature of 1000 k. determine the final pressure using the following approaches: (a) approximate analysis (using properties at the average temperature) (b) exact analysis
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Engineering, 04.07.2019 19:20
Afan that can provide air speeds up to 60 m/s is to be used in a low-speed wind tunnel with atmospheric air at 35 c. if one wishes to use the wind tunnel to study flat-plate boundary layer behavior up to reynolds numbes of re 10, what is the minimum plate length that should be used? at what distance from the leading edge would transition occur if the critical reynolds nurnber were rer,e = 5 Γ 105?
Answers: 2
Which examples are design tradeoffs? Choose all that apply.
a. the design of lightweight plastic ma...
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