Casting, Forming and Welding II Mock Test 10

10%

Question 1 of 10

1. Which of the following characteristic does not define a coated electrode?

Preventing other elements into molten metal

Protection from nitrogen

Maintenance of arc

Protection from oxygen

Question 1 of 10

Question 2 of 10

2. What is the amount of carbon contained by a soft steel wire?

0.15% to 0.22%

0.2% to 0.27%

0.18% to 0.26%

0.1% to 0.18%

Question 2 of 10

Question 3 of 10

3. What is the initial oxygen pressure provided through the lance?

1 atm to 2 atm

2 atm to 3 atm

4 atm to 5 atm

3 atm to 4 atm

Question 3 of 10

Question 4 of 10

4. Which bead character is seen due to too high welding current?

Excess splatter

Pilling of weld metal

Pilling of metal

Small bead formation

Question 4 of 10

Question 5 of 10

5. What is the temperature of the positive electrode in metal arc welding?

2400°C

2600°C

2500°C

2300°C

Question 5 of 10

Question 6 of 10

6. Which material is not used as an iron coating on the electrode used in arc welding?

Cellulose

Steel

Iron powder

Calcium fluoride

Question 6 of 10

Question 7 of 10

7. In flash butt welding, the forced out metal is called flash.

False

True

Question 7 of 10

Question 8 of 10

8. A smooth and regular bead cannot be formed in metal arc welding.

True

False

Question 8 of 10

Question 9 of 10

9. What is the flame temperature of acetylene?

2800°C

1700°C

3200°C

2200°C

Question 9 of 10

Question 10 of 10

10. The following figure represents which rivet head?

Pan head

Half countersunk head

Conical head

Snap head

Question 10 of 10