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AIEEE 2009 Solved Paper
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© examsnet.com
Question : 37
Total: 89
A long metallic bar is carrying heat from one of its ends to the other end under steadystate. The variation of temperature
θ
along the length
x
of the bar from its hot end is best described by which of the following figures?
Validate
Solution:
The heat flow rate is given by
d
Q
d
t
=
k
A
(
θ
1
−
θ
)
x
⇒
θ
1
−
θ
=
x
k
A
d
Q
d
t
⇒
θ
=
θ
1
−
x
k
A
d
Q
d
t
where
θ
1
is the temperature of hot end and
θ
is temperature at a distance
x
from hot end. The above equation can be graphically represented by option
(
a
)
.
© examsnet.com
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