P27_025.PDF
(
58 KB
)
Pobierz
Chapter 27 - 27.25
25. The resistance at operating temperature
T
is
R
=
V/i
=2
.
9V
/
0
.
30A = 9
.
67Ω. Thus, from
R
−
R
0
=
R
0
α
(
T
−
T
0
), we find
1
=20
◦
C+
1
4
.
5
R
R
0
−
9
.
67Ω
1
.
1Ω
−
1
×
10
−
3
/
K
which yields approximately 1900
◦
C. Since a change in Celsius is equivalent to a change on the Kelvin
temperature scale, the value of
α
used in this calculation is not inconsistent with the other units involved.
Table 27-1 has been used.
T
=
T
0
+
1
α
Plik z chomika:
kf.mtsw
Inne pliki z tego folderu:
P27_069.PDF
(63 KB)
P27_001.PDF
(53 KB)
P27_003.PDF
(56 KB)
P27_007.PDF
(54 KB)
P27_002.PDF
(53 KB)
Inne foldery tego chomika:
chap01
chap02
chap03
chap04
chap05
Zgłoś jeśli
naruszono regulamin