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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.
merits and demerits of electrostatic sheilding.
Explain the different types of polarization mechanisms in dielectrics. There are essentially four basic kinds of polarization mechanisms: Interface polarization: Electron
#question.Q1 What is wrong with each of the following attempts to write an electron configuration? Justify your answer with suitable explanation. (a) 1s22s3 (b) 1s22s22p23s2 (c) 1s
Explain the phenomenon of polarization in dielectric materials. Polarization in Dielectric Materials: If a material contains polar molecules, they will usually be in rando
Applications of permanent magnets a - Applications based on attraction or repulsion forces b - Applications based on Faraday's induction law c- Application based on Lor
The various common conducting materials used are: 1) Copper 2) Aluminium 3) Tungsten
Q. Write short notes on cloud and pour point of lubricant. Ans. Cloud and pour point of lubricant: When the temperature is lowered up to a particular point, the oil becomes
Consider the cascade loop as shown below: i) Specify the inner-loop gain such that the damping coefficient of the closed loop is equal to 0.4 ii) Derive the ultimate
objective of the nasic test
relevance of surveying and geoinformatics to chemical engineering
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