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Q. Which functions used for coating?
• Improves arc stability by providing certain chemical which have this ability, by ionizing the path of arc.• Provides a protective gaseous atmosphere to prevent O2, H2 and N2 pick-up by the molten metal.• Provides a protective slag over hot metal.• Provides flux, which helps to remove oxides and other impurities from the molten weld metal.• Reduces spatter of weld metal- when coating burns off slower than core.• Acts as deoxidizers.• Adds alloying elements.• Increases deposition efficiency.• Slows down the cooling rate of weld (due to protective layer of slag) to prevent hardening.• Coatings are normally insulators of electricity and so permit the use pf electrodes in narrow grooves etc.
Point of inflexion: Define the term point of contraflexure or point of inflexion. Also define point of zero shear force? Sol.: The points (other than extreme ends of beam)
define the prandtl stress function
Determine acceleration of weight: Two pulleys of radii 200 mm and 400 mm are mounted co-axially and rigidly on a common-shaft. These pulleys have a overall mass of 28 kg an
what are the limitations of group technology and life cyle issues in group technology
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The following form basis of evaluation : The unit has obtained all necessary clearances whether statutory or administrative, e.g. drug license under drug control order, NOC
The pressure and temperature of a diesel cycle at the start are 1 bar and 20C respectively and the compression ratio is 14. The pressure at the end of expansions 2.5 bar. Find perc
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In order to get your first experience of ARM programming, this way you are familiar with the problem itself, its design, its flow of execution and you can use your own C code as ps
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