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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.
BURGER VECTOR The Burgers vector, often denoted by b, is a vector that shows the magnitude and direction of the lattice distortion of dislocation in a crystal lattice. The dire
What are its applications? (i) Direct extrusion: The billet is placed in a container and forced by the die through a piston. (ii) Indirect extrusion: The extruded part
Bakelite is a material based on the thermosetting phenol formaldehyde resin. Produced by the reaction under heat and pressure of phenol (a toxic, colourless crystalline solid) and
Design and Construction : Note the design of the college building. Also observe the quality of construction and the materials (bricks, tiles, stone, cement, mosaic or any other)
Compute the kerosene/water ratio necessary to remove 90 % of the nicotine from the aqueous stream in a single equilibrium stage.
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) 1s22s23s2 (d
Explain polymerisation vinyl chloride and its applications. PVC and its applications - It is acquired from polymerisation of vinyl chloride in the presence of a catalyst as per
Advantages of cold working (i) No heat is needed. (ii) Better surface finish is get. (iii) Superior dimension control. (iv) Improved strength and hardness properti
internal treatment with reference to phosphate conditioning
The importance of oil acid and base titration in the saponification value of oil
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