Fundamental of Welding Science and Technology NPTEL ANSWERS : WEEK 6 (part 1)

 Fundamental of Welding Science and Technology NPTEL ANSWERS : WEEK 6 (Question 1-2)

WEEK 7 ASSignMENT

 

1 point

1. Oxidizing flame requires flux except for welding which of the following metals:             

 Stainless steel

 Cast Iron

 Brass

 Zinc, lead

D

Except for lead, zinc and some precious metals, OFW of nonferrous metals, cast irons and stainless steels 

generally requires a flux. 

1 point

2. Which of the following flame is the hottest?

 Reducing flame

 Neutral flame

 Oxidizing flame

 All have same temperature

C

Reducing Flame (Max. temperature is about 3040°C)

Neutral flame (Max. temperature is about 3260 °C)

Oxidizing Flame (Max. temperature is about 3315°C) 

1 point

PART 2