Engineering, 21.12.2019 06:31 hinacat87
Thermal energy generated by the electrical resistance of a 5-mmdiameter and 4-m-long bare cable is dissipated to the surrounding air at 20°c.
the voltage drop and the electric current across the cable in steady operation are measured to be 60 v and 1.5 a, respectively. disregarding radiation, estimate the surface temperature of the cable.
evaluate air properties at a film temperature of 60°c and 1 atm pressure.
is this a good assumption?
Answers: 2
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