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Answer the following questions in brief:

  1 . Explain about  filler wires ?

  2.   Explain how  filler  wire is selected in gas welding ?

  3.   Explain types the filler rod .

  4.   Explain the electrode flux function.

  5. Explain brazing filler  rod .

  6. Write down gas brazing procedure?

  7. What is brazing flux function?

  8. Explain the types of brazing ?

  9. Write down gas soldering  procedure?

  10. What is soldering  flux function?