CSWIP 3.1 Paper Four Questions And Answers

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1.

Gamma rays and X-rays are part of a family of waves called:

 a. Acoustic waves

 b. Light waves

 c. Electromagnetic waves

 d. Transverse waves

2.

Porosity is caused by:

 a. Entrapped slag in the solidifying weld

 b. Entrapped gas in the solidifying weld

 c. Entrapped metallic inclusions in the solidifying weld

 d. None of the above

3.

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

 a. Hydrogen controlled

 b. Cellulosic

 c. Rutile

 d. Iron powder

4.

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

 a. AC with a suppressor

 b. AC without a suppressor

 c. DC with reverse polarity

 d. DC with straight polarity

5.

Hydrogen-controlled electrodes were developed principally for:

 a. The prevention of porosity

 b. The prevention of cracking

 c. The enhancement of arc voltage

 d. Their ease of arc starting

6.

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

 a. High amperage is used

 b. Shelf life will be decreased

 c. Their electrical conductivity is less than that of steel

 d. They are more expensive

7.

Which type of SAW flux is more resistant to moisture absorption?

 a. Fused

 b. Agglomerated

 c. Basic

 d. All the above have the same resistance

8.

The presence of iron sulphide in the weld metal is most likely to produce which of the following upon contraction of the weld?

 a. Solidification cracking

 b. Hydrogen cracking

 c. Intergranular corrosion

 d. Stress corrosion cracking

9.

A large grain structure in steel is said to produce:

 a. Low ductility values

 b. Low fracture toughness values

 c. High fracture value values

 d. High tensile strength

10.

Repair welding is often more difficult than production welding due to:

 a. The material being ingrained with in-service contaminants

 b. Restricted access within the repair area

 c. The possible position of the weld repair

 d. All the above

11.

Which electrode classification would be relevant to AWS A5.1-81?

 a. E 6013

 b. E 5133

 c. E 7018 – G

 d. Fleetweld 5

12.

EN 288 standard would refer to which of the following:

 a. Welder approval testing

 b. Welding equipment

 c. Welding procedure approval

 d. Consumables for welding

13.

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

 a. 100% CO2

 b. 100% argon

 c. 80% argon and 20% CO2

 d. 98% argon and 2% oxygen

14.

The flame temperature of oxy/acetylene mixture gas is given as:

 a. 3200°C

 b. 2300°C

 c. 5000°C

 d. None of the above

15.

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

 a. Mains supply voltage

 b. Arc current

 c. Arc voltage

 d. Open circuit voltage

16.

Ultrasonic testing is more advantageous in detecting which of the following weld imperfections, over other NDT methods?

 a. Lack of sidewall fusion

 b. Surface undercut

 c. Incompletely filled groove

 d. Overlap

17.

A measure of the accuracy of a radiograph as an NDT tool is given by its:

 a. Intensity

 b. Density

 c. Sensitivity

 d. Exposure

18.

Hydrogen cracking in the weld metal is likely when welding:

 a. Carbon manganese steels

 b. Stainless steels

 c. Micro alloyed steels (HSLA)

 d. Low carbon steels

19.

The movement of the arc in MMA welding by magnetic forces is called:

 a. Arc deviation

 b. Arc misalignment

 c. Arc blow

 d. Arc eye

20.

Tempering is often carried out to regain toughness after which of the following processes?

 a. Annealing

 b. Normalising

 c. Hardening

 d. Stress relieving

21.

The likelihood of brittle fracture in steels will increase with:

 a. A large grain formation

 b. A reduction of in-service temperature to sub-zero temperatures

 c. Ferritic rather than austenitic steels

 d. All of the above

22.

Oxy pressure and nozzle size in flame cutting would influence:

 a. The temperature required for cut initiation

 b. The ability to cut stainless steels

 c. The depth of the cut obtainable

 d. None of the above

23.

Under normal contract conditions, weld procedure approval tests for pipework are:

 a. Mandatory

 b. Dependant on site and weather conditions

 c. Dependent upon the contractor’s confidence in his procedures

 d. Only required when MMA welding is used

24.

The main usage of arc cutting/gouging processes is:

 a. The cutting of single bevel preparations

 b. The removal of deposited welds

 c. The cutting of single U type preparations

 d. The cutting/gouging of non-ferrous materials only

25.

In a bend test, the face of the specimen is in tension and the root is in compression. What type of test is being carried out?

 a. A root bend test

 b. A side bend test

 c. A face bend test

 d. None of the above

26.

Which of the following processes joins metals plastically?

 a. Friction welding

 b. Resistance welding

 c. Plasma welding

 d. All of the above

27.

A surface-breaking crack will be detected during a magnetic particle inspection if it is:

 a. At right angles to the lines of flux

 b. Parallel to the lines of flux

 c. At 25° to the lines of flux

 d. All of the above

28.

Which of the following coatings is associated with stove welding?

 a. Rutile

 b. Cellulosic

 c. Basic

 d. Oxidising

29.

The advantage of ultrasonic non-destructive testing for the examination of weldments is:

 a. It can be used to locate flaws

 b. It can be used to size flaws

 c. It has a high sensitivity to planar flaws

 d. All of the above

30.

A metallurgical problem most associated with submerged arc welding is:

 a. Hydrogen cracking in the HAZ

 b. Solidification cracking in the weld metal

 c. Hydrogen cracking in the weld metal

 d. Lamellar tearing in the weld metal

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