تم الحل ✓
categoryهندسة كهربائية
schoolبكالوريوس
event_available2026-07-13
السؤال
Transcribed Image Text:
5-26 Electric current I
=
500 A flows through a stainless steel conductor of diameter
D= 5 mm that has an electric resistance R = 5× 10-4 2/m. Energy generated as
a result of the passage of the electric current is dissipated by convection into an am-
bient at temperature Too 0°C with a heat transfer coefficient h 50 W/(m².°C)
The thermal conductivity of the conductor is k 60 W/(m-°C). Calculate the
=
center and surface temperatures of the cable.
=
=
Note:
g=
RI²
(лD²/4) x (1)
W/m³
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