SAW

Question 1

Which electrode positioning gives the greatest penetration , bead shape and resistance to undercut?

A. Vertical
B. Trailing
C. Leading

Answer 1

C. Leading

Question 2

Which electrode positioning gives a narrow deep profile and susceptible to undercut and solidification cracking ?

A. Trailing
B. Vertical
C. Leading

Answer 2

A. Trailing

Question 3

DCEP give…..

A. Higher deposition rate , reduce penetration , surfacing Use
B. Used to avoid arc blow, can give unstable arc .
C. Deep penetration , better for porosity.

Answer 3

C. Deep penetration , better for porosity .

Question 4

DCEN is used for …..

A. Deep penetration , better for porosity .
B. Higher deposition rate , reduce penetration , surfacing Use
C. Used to avoid arc blow, can give unstable arc.

Answer 4

B. Higher deposition rate

Question 5

AC is used for…

A. Deep penetration , better for porosity
B. Higher deposition rate , Reduce penetration, surfacing Use
C. Avoid arc blow ,,, can give unstable arc .

Answer 5

C. Avoid arc blow ,,, can give unstable arc .

Question 6

Which type of SAW flux is prone to moisture pick up ?

A). Fused
B). Agglomerated

Answer 6

B) Agglomerated

Question 7

Which SAW flux breaks into fine particles ?

A) Fused
B) Agglomerated

Answer 7

A) Fused

Question 8

Which SAW flux is recyclable?

A). Agglomerated
B). Fused

Answer 8

B) Fused

Question 9

Current range for 1.6 tungsten

A) 10-50
B)50-150
C)150 -250
D) 200-250

Answer 9

B)50-150

Question 10

Current range for 2.4 tungsten

Answer 10

130-250 Amps

Question 11

Current range for 3,2 mm tungsten

Answer 11

240-400Amps