Ques 1. In context of Parent Metal, higher the cooling higher will be the-

(a) Hardness

(b)softness

(c) Brittleness

(d) toughness

 Ques 2. During welding, the HAZ (heat affected Zone) does not undergo welding but experiences-

(a) Moulding

(b) complex thermal and stress alterations.

(c) extensive grain growth

(d) pressing

Ques 3. In Fine grained HAZ(FHAZ), peak temperature is in the range of-

(a) 600-1000°C

(b) 200-800°C

(c) 900-1200°C

(d) 100-500°C

Ques 4. HAZ cracking is rarely experienced with CE values below-

      (a)0.39%.

      (b)0.50%

     (c) 1.25%

     (d) 0.1%  

  Ques 5. Gas shielded processes such as MAG and TIG are inherently  low in hydrogen with levels –

(a) 15-20ml/200gm

(b)5-10 ml/100 gram

(c) 35-40 ml/300 gram

(d) 25-65 ml/500gram

Ques 6.Explain Heat Affected Zone(HAZ).

Ques 7.Define Weld joint.

Ques 8.Explain fine grained HAZ (FGHAZ).

Ques 9. What is the Purpose of Pre Heat?

ques 10.What is Heat distribution and effects of faster cooling?