Fundamental of Welding Science and Technology NPTEL ANSWERS : WEEK 6 (part 2)

Fundamental of Welding Science and Technology NPTEL ANSWERS : WEEK 6 (Question 3-4)

WEEK 7 ASSignMENT

PART 1

3. An acetylene/oxygen flame burns at ___ °C.

 2,250

 2,526

 3,073

 3,773

        D (NOT SURE)

4. In oxygen/acetylene welding for the complete combustion of C2H2:

 1/5th proportion of the O2 comes from the cylinder

 2/5th proportion of the O2 comes from the cylinder

 3/5th proportion of the O2 comes from the cylinder

 5/5th proportion of the O2 comes from the cylinder

 B

As the oxygen-acetylene mixture burns from the tip of the welding torch, it displays several 

clearly recognizable zones of combustion.

The overall chemical equation for the complete combustion of acetylene is: 

 2C2H2 + 5O2 ----->  4CO2 + 2H2O ............................................(1) 

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