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Two parallel planes 1.2x1.2 are splited by a distance of 1.2 m. the emissivity's of the planes are 0.4 and 0.6, and the temperature are 760 and 300 oC, correspondingly. A 1.2x1.2 radiation shield having an emissivity of 0.05 on both side situated equidistance among the two planes. The combined arrangement is placed in a large room which is maintained at 40 oC. (a) Determine heat transfer rate from each of the two planes if the shield were not present. (b) Determine heat transfer rate from each of the two planes if the shield were present. (c) Temperature of the shield.
Describe various properties and applications of mica and transformer oil. Properties and uses of MICA Mica has a high dielectric strength and good chemical stability, making
The most common DC applications are: Electromagnets and yokes • Relays • Magnetic shields • Electrical measuring devices • Magnetic amplifiers
fing the neceessary and sufficient conditions for the numbers s and t to make the LP problem maximise z=x+y subject to:sx+ty x;y>0 have an optimal solution be feasible b
Colebrook equation is used to find a friction factor, f , in a pipe flow as given by: where ? and Re are the roughness ratio and Reynolds number respectively. Considering
MECHANICAL design for evaporator
Why protons doesn''t react which each other?
Porosity: The property of the refractory brick is the ratio of its pore volume to the total volume. The refractory material with high porosity is not preferred for furnace lining
Ask question #Minimum 100 words accepted.hardness of bore water is less than that of sea water-justify
molecular view of solution explanation
ac++ programming which calculate molcular weight of hydrocarbon compounds
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