Answer / sher bahadur

Due to potential difference between two electrodes arc produces in electric arc furnace.

Answer / khushi

because of high temperature supplied to electrodes,electron jumps to molten metal and surrounding gas gets ionized. This is how arc produces.

Answer / brij

by electric resistance,due to flow electricity with high
resistance circuiet heat is gunerated.

Why same casting has different hardness and machine-ability properties?

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What is the difference between plaster used in gold investment casting and ceramic used in the process of investment casting of automobile engine parts and turbineblades etc. When both are used in the lost-wax method?

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What is the critical speed of shaft?

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HOW TO GET LAST 10 YRS. QUESTION PAPERS

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How would a salt and water solution clean a penny but a vinegar and salt solution will not clean a penny?

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