You will be observing laminar-turbulent transition for room temperature (about 20°C) water flowing in a 0.602"" ID pipe (Schedul
e 40 1/2"" pipe). Estimate the flow rate in gallons/minute (gpm) at which transition should begin (ReD= 2300) and the flow rate for fully turbulent flow (ReD> 4000). Repeat calculations for a 0.804"" ID pipe (Schedule 40 3/4"" pipe).
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Answer:
778.4°C
Explanation:
I = 700
R = 6x10⁻⁴
we first calculate the rate of heat that is being transferred by the current
q = I²R
q = 700²(6x10⁻⁴)
= 490000x0.0006
= 294 W/M
we calculate the surface temperature
Ts = T∞ +
Ts =
The surface temperature is therefore 778.4°C if the cable is bare
Answer:
attached below
Explanation:
a) G(s) = 1 / s( s+2)(s + 4 )
Bode asymptotic magnitude and asymptotic phase plots
attached below
b) G(s) = (s+5)/(s+2)(s+4)
phase angles = tan^-1 w/s , -tan^-1 w/s , tan^-1 w/4
attached below
c) G(s)= (s+3)(s+5)/s(s+2)(s+4)
solution attached below
