Engineering, 30.12.2019 22:31, esme06quirino
A25 mm diameter high voltage power line has an electrical resistance of 10-4 ohm/m, and is transmitting current of 1000 a.
if ambient air at temperature tinfinity =10 degreec and wind freestream velocity is uinfinity = 10 m/s is in cross-flow over the power line (assume it to be a long copper cylinder), what is its surface temperature?
[assume a temperature of 300k while looking for properties of copper and air in heat transfer property tables]
Answers: 1
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Engineering, 04.07.2019 18:10, leomessifanboy678
The filament of an incandescent lamp has a temperature of 2000k. calculate the fraction of radiation emitted in the visible light band if the filament is approximated as blackbody
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Engineering, 04.07.2019 18:10, caitlynnpatton1208
Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.
Answers: 3
Engineering, 04.07.2019 18:10, nandalabella06
True or false (explain) (110)[111] is a slip system in bcc metals . the {111} family in fcc contains 8 planes. resolved shear stress (rss) in single crystals is just related to the applied stress. critical resolved shear stress (crss) in single crystal metals is direct proportional to the number of defects in the structure
Answers: 2
A25 mm diameter high voltage power line has an electrical resistance of 10-4 ohm/m, and is transmitt...
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