Engineering, 23.02.2022 01:40 Natasha019
Consider a coaxial cable of inner radius a and outer radius b, filled with a lossless dielectric material. The phasor-domain fields inside of the cable (a < rho < b) for a time-harmonic wave traveling down the cable are given in cylindrical coordinates as:
E= rho (1/ rho)e^- jkz
H= φ (1/rho) 1/ ηo√εr. e^-jkz
Calculate the total time-average power (in Watts) flowing in the z direction down the cable.
Answers: 2
Engineering, 04.07.2019 18:10, lowkeyqueenk
Apipe with an outside diameter of 15 cm is exposed to an ambient air and surrounding temperature of -20°c. the pipe has an outer surface temperature of 65°c and an emissivity of 0.85. if the rate of heat loss from the pipe surface is 0.95 kw per meter of length, the external convective heat transfer coefficient (h) is: (a) 12.5 w/m"k (b) 18.6 w/mk (c) 23.7 w/mk (d) 27.9 w/mk (e) 33.5 w/mk
Answers: 1
Engineering, 04.07.2019 18:10, genyjoannerubiera
Assuming compressible flow of air and that the measurements are done at flagstaff a pitot static tube that gives the difference of total and static pressure measures 0.35 m of mercury. what is the velocity of air? assume the temperature to be 300k. (submit your excel or matlab calculation sheet)
Answers: 1
Consider a coaxial cable of inner radius a and outer radius b, filled with a lossless dielectric mat...
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