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CSWIP Examination – General Paper

1
An MMA electrode which is classified as an E6013 (according to AWS 5.1) is a:
Basic type
Cellulose type
Rutile type
Thick coated iron powder type

2
Which polarity is normally used for GTAW welding of aluminum?
AC
DC electrode negative
DC electrode positive
It would make little difference which was used

3
A code gives the acceptance standard for excess weld metal “h” as h<=1mm+0.1b, max. 5mm; which “b” is the width of the weld cap. For which of the following situations is the excess weld metal acceptable?
b = 15h = 3.0
b = 22h = 3.0
b = 28h = 4.0
b = 40h = 5.4

4
A fillet weld has a design throat thickness of 8mm. That is the minimum leg length that is required?
5.6mm
11.2mm
11.8mm
It can not be determined from the information given

5
The number 111 is shown at the tall-end of a weld symbol reference line. According to BS EN 22553. What does this number indicate?
Welding process
Type of welding electrode
Welding position
Total weld length

6
Which of the following alloying elements is used mainly to improve the toughness of steels?
Chromium
Manganese
Sulphur
Carbon

7
When MIG/MAG welding, wire feed speed is proportional to:
Travel speed
Welding current
Arc length
Inductance

8
An electrode is classified to BS EN 499 as E 35 3 B. What does 35 ?
350 N/mm2 yield strength
35 Joules @-30degree C
35N/mm2 tensile strength
35ksi tensile strength

9
A large diameter pipe with a wall thickness of 10mm is to be used for a cross country pipeline. Which electrode type could be used to combine high welding speed and deep penetration?
Basic covered
Cellulosic covered
Rutile covered
Iron power loaded

10
Which NDT method is associated with the use of a yoke?
Radiographic testing
Helium leak testing
Magnetic particle testing
Ultrasonic testing

11
A transverse tensile test piece from a weld joint will give the:
Tensile strength of the weld
Tensile strength of the joint
Stress/strain characteristics of the weld
Stress/strain characteristic of the joint

12
Weldments in carbon-manganese steels, made by low heat input welding may shown
Greater ductility
Higher distortion
Higher dilution
Higher hardness

13
When measuring arc length voltage, where should be measure at
Across the terminals of the power source
Across the arc and as near practical to the arc
Across the power source positive terminal and earth cable
It does not matter – anywhere in the circuit

14
A drawing with symbols to BS EN 22553 will show a 5mm leg fillet by which of the following:
a5
t5
z5
5z

15
Using a stabilized stainless steel will reduce the risk of:
Excessive distortion
Weld decay
Formation of iron-sulphides
Sour service cracking

16
Standard oxy-fuel gas cutting equipment can be applied to:
Aluminum alloys
Carbon steel
Austenitic stainless steel
Copper

17
Which of the following types of imperfection is generally considered to be the most serious?
Surface breaking planar
Root concavity
Buried planar
Surface breaking non-planar

18
Weldment in carbon-manganese steels, made using a heat input higher than the maximum specified by the WPS, may show:
Higher integrity
Lower distortion
Lower toughness
Higher hardness

19
The output characteristic of typical GMAW set is
Constant voltage
Constant current
Drooping
Pulsing

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20
Which of the following standards is concerned with welder approval?
BS EN 499
BS EN 288
BS EN 22553
BS EN 287

21
A long centerline crack has been detected in a submerged arc weld bead this may be due to
Use of a high manganese filler wire
Use of a damp flux
Weld bead is deep and narrow
Use of too high voltage

22
A steel designated as “Z” quality will have:
Through-thickness ductility values > 20%
Through- thickness ductility values <20%
Been specially heat treated
Zirconium added to improve weldability

23
The penetrating power of an X-ray set is expressed in:
Curies
kV
IQI values
The number after the isotope type

24
The included angle used for MMA welding of a 15mm thick steel single V butt joint is most likely to be:
35 Deg.
120 Deg.
70 Deg.
90 Deg.

25
Which of the following is not a fusion welding process?
Friction welding
Gas tungsten arc welding
Resistance welding
Laser welding

26
A typical baking temperature for basic low hydrogen electrodes is:
120 Deg. C
350 Deg. C
500 Deg. C
200 Deg. C

27
Burn through may occur because the:
Current is too high
Root gap is too small
Root face is too small
Current is to low

28
Which of the following defects will have the more severe effect on the load-bearing capacity of a weld?
Undercut
Incompletely filled groove
Irregular width
Excess penetration

29
While inspecting a weld on a 100mm thick high carbon steel plate with a … the weld is visually acceptable, however the parent material has severse … the weld approximately 3mm deep, what course of action would you …
None, I am only inspecting the weld
Recommend that the area be dressed smooth
Recommend that the area be dressed smooth followed by MPI
High carbon steel is not susceptible to cracking so I would weld over …

30
Which of these statements are true concerning Lamellar tearing?
As hydrogen levels increase Lamellar tearing is more likely
As material thickness increases ductility decreases making Lamellar tearing more likely
Lamellar tearing occurs in the HAZ
Lamellar tearing affects all joint types
Nguyen Duy Bien
 

Enjoy learning and researching, reading book. Knowledge welding inspection painting inspection.

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