Carbon dioxide used as a natural refrigerant flows through a cooler at 10 MPa, which is supercritical, so no condensation occurs
. The inlet is at 220°C and the exit is at 50°C. Find the specific heat transfer.
2 answers:
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Answer:
1) Dimensions of shear rate is .
2)Dimensions of shear stress are
Explanation:
Since the dimensions of velocity 'v' are and the dimensions of distance 'y' are
, thus the dimensions of
become
and hence the units become
.
Now we know that the dimensions of coefficient of dynamic viscosity are
thus the dimensions of shear stress can be obtained from the given formula as
Now we know that dimensions of momentum are
The dimensions of are
Thus the dimensions of
Which is same as that of shear stress. Hence proved.
Answer:
1 pulse rotate = 9 degree
Explanation:
given data
incremental encoder rotating = 15 rpm
wheel holes = 40
solution
we get here first 1 revolution time
as 15 revolution take = 60 second
so 1 revolution take =
1 revolution take = 4 seconds
and
40 pulse are there for 1 revolution
40 pulse for 360 degree
so 1 pulse rotate is =
1 pulse rotate = 9 degree