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1.

Metal-Arc
When ‘hydrogen control’ is specified for a manual metal arc welding project the electrode would normally be:

2.

When manual metal arc welding is being carried out on an open construction site! which group of welders are most likely to require continuous monitoring?

3.

You notice manual metal arc electrodes! stripped of flux! are being used as filler wire for TIG welding. &ou would object because:

4.

When open site working serious porosity in metal arc welds is brought to your attention.
What would you investigate?

5.

The use of flux with gas shielded metal arc welding allows:

6.

The voltage necessary to maintain an arc during metal arc welding is termed:

7.

When manual metal arc welding low carbon steel! which electrode covering will give the greatest degree of penetration?

8.

Tig
When TIG welding austenitic stainless steel pipe! argon gas bac”ing is called for. This is to:

9.

Inherent rectification of the electrical output is produced in the arc when ‘TIG welding using:

10.

When referring to TIG welding, the shielding gas could be:

11.

Which defect would you expect to get in TIG welds in non- deoxidized steel?

12.

Argon purging on the root side is necessary for the TIG welding of stainless steel to:

13.

When TIG welding austenitic stainless steel pipe, argon gas backing is called for. This is to:

14.

MIG
MIG welding tends to be susceptible to a lack of fusion problems. This is because of:

15.

A common gas mixture used in MIG welding nickel alloys, to combine good le)els of penetration with good arc stability would be:

16.

When referring to MIG welding! the shielding gas would be:

17.

Submerge

Submerged arc utilizes:

18.

Which of the following is likely to give the highest impact strength in ferritic weld metal?

19.

Submerged arc welds made with re1cycled flux are liable to:

20.

In submerged arc welding the use of excessively high Voltage would result in:

21.

Submerged arc fluxes can be supplied in two forms. These are

22.

In submerged arc welding Excessive arc voltage may cause:

23.

Slag inclusions would occur with:

24.

MMA
In MMA welding what parameter is used for control of penetration into the base material?

25.

In MMA welding! the slags produced can be varied to suit the welding position. Which type of slag would be required for welding in the HV position?

26. The weld metal deposit of MMA electrodes achieves its mechanical strength through:

27.

MMA electrodes can be grouped into three main types. ‘these are:

28.

Movement of the arc in MMA welding by magnetic forces is called

29.

When MMA welding low carbon steel which electrode will give the greatest deposition rate?

30.

MMA welding of low alloy steels is more likely to be performed with:

31.

The permanent backing material for MMA welding of low carbon steel should be made from:

32.

In positional MMA welding on pipework, welders are having difficulty in obtaining good capping profiles when welding in the overhead position. Would you:

33.

MMA welds made with damaged electrode coatings are subject to:

34.

HAZ
Which physical test is more likely to reveal HAZ embrittlement?

35.

Which of the following tests would indicate the toughness of weld metal/parent metal HAZ?

36.

Welding a steel plate with a CE of o.45 would require preheating to:

37.

You have a macro section of a T butt joint that shows a step-like defect lying outside the Visible HAZ. What would this defect possibly signify?

38.

Electrodes
Cellulosic electrodes are often used when welding the root pass of pipes in the field because:

39.

Austenitic stainless steel electrodes are generally smaller in length than mild steel electrodes because:

40.

The electrodes for welding low alloy steels should be:

41.

Preheat
Preheating for arc welding applies to:

42.

Which one of the following statements is correct?

43.

Preheating and inter pass heating are used primarily for: