Multiple Choice Questions On Brazing Process


11. Entrapped fluxes, during brazing result in.......


   A.Presence of gas pockets

   B.Corrosion

   C.Cracking

   D.Distortion of joints

   E.Erosion


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B.Corrosion

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12. Which of the following flux is used for brazing aluminium and magnesium.......


   A.Mixture of boric acid,borax and wetting agent

   B.Boric acid,borax or fluoride with a wetting agent

   C.Chlorides and fluorides mixed with water

   D.Any of the above


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C.Chlorides and fluorides mixed with water

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13. When brazing is carried out.........


   A.A joint is made between two parts by molten spelter

   B.The edges of the joint melt and run together

   C.Spelter forms an alloy with the flux

   D.Flux prevents the work from melting

   E.Flux acts as a cementing material


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A.A joint is made between two parts by molten spelter

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14. Spelter is same as......


   A.Tin

   B.Zinc

   C.Lead

   D.Silver

   E.Brass


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B.Zinc

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15. A braze joint may be satisfactorily used on components made of.......


   A.Tinplate

   B.Brass

   C.Copper

   D.Aluminium

   E.None of the above


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C.Copper

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