CSWIP 3.1 Multiple Choice Questions -practice Paper 4

30 Questions | By Franciscojay16 | Last updated: May 22, 2018 | Total Attempts: 7790

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1.

Which of these drawing symbols shows weld penetration depth in accordance with BS EN 22553?
- A.
- B.
- C.
- D.
2.

BS EN 288 and BS EN ISO 15614 are specifications for?
- A.
  
  Welder approval testing
- B.
  
  Welding equipment calibration
- C.
  
  Welding procedure approval
- D.
  
  Consumables for submerged arc welding
3.

What determines the penetrating power of gammer rays?
- A.
  
  Time
- B.
  
  Type of isotope
- C.
  
  Source-to-film-distance
- D.
  
  Source strength
4.

Which element has the greatest effect on the HAZ hardness of C-Mn steel?
- A.
  
  Molybdenum
- B.
  
  Chromium
- C.
  
  Titanium
- D.
  
  Carbon
5.

Preheating a steel plate with a carbon equivalent (CEV) of 0.48 may be required to:
- A.
  
  Drive moisture from the plate
- B.
  
  Prevent excessive hardening in the HAZ
- C.
  
  Prevent the formation of carbides
- D.
  
  Improve the mechanical properties of the weld metal
6.

A welder approval certificate should be withdrawn if:
- A.
  
  He has not done any welding for 4 months
- B.
  
  He has been absent from work for 7 months
- C.
  
  The repair rate for his work exceeds 1%
- D.
  
  His work has been examined by UT only
7.

In friction welding, the metal at the interface when the joining occurs is describes as being in the:
- A.
  
  Liquid state
- B.
  
  Intercritical state
- C.
  
  Plastic state
- D.
  
  Elastic state
8.

A penertrameter (IQI) is used to measure the:
- A.
  
  Size of discontinuity in a weld joint
- B.
  
  Density of a radiographic film
- C.
  
  Degree of film contrast
- D.
  
  Quality of the radiographic technique
9.

Which of the following cutting methods is suitable for cutting stainless steel?
- A.
  
  Plasma
- B.
  
  Oxy-acetylene
- C.
  
  Oxy-propane
- D.
  
  It depends upon the thickness.
10.

Which of the following would be classed as the most serious type of defect?
- A.
  
  A buried linear slag inclusion
- B.
  
  Buried lack of inter-run fusion
- C.
  
  Surface breaking lack of sidewall fusion
- D.
  
  Surface porosity
11.

Ultrasonic testing has an advantage over other NDT methods for the detection of:
- A.
  
  Lack of sidewall fusion
- B.
  
  Root undercut
- C.
  
  Incompletely filled groove
- D.
  
  Root concavity
12.

Exceeding the maximum interpass temperature specified for a C-Mn steel weld joint may give:
- A.
  
  Excessive porosity
- B.
  
  Burn through
- C.
  
  Lower toughness
- D.
  
  Higher strength
13.

MIG/MAG welding has a tendency to give lack of sidewall fusion when:
- A.
  
  Spray transfer conditions are used
- B.
  
  100% CO2 shielding gas is used
- C.
  
  Pulsed current is used
- D.
  
  Dip transfer
14.

The temperature range over which a steel goes from having high to low toughness is called the:
- A.
  
  Critical transformation temperature
- B.
  
  Ductility dip temperature
- C.
  
  Bi-modal temperature
- D.
  
  Transition temperature
15.

For SAW, what is the effect of raising arc voltage but keeping all other parameters the same?
- A.
  
  Weld bead width will increase
- B.
  
  Depth of penetration will increase
- C.
  
  Weld bead width will decrease
- D.
  
  Depth of penetration will decrease
16.

Changing an essential variable beyond the allowed limits for a qualified welding procedure:
- A.
  
  May change the mechanical properties of the joint
- B.
  
  May adversely affect the quality of the weld
- C.
  
  Will require a new welding procedure to be approved
- D.
  
  All of the above
17.

With reference to the various grades of stainless steels which of the following statements is true?
- A.
  
  They are all non-magnetic
- B.
  
  They all require 100% Ar for GMAW
- C.
  
  They all have very high thermal conductivity
- D.
  
  Only certain grades can be used for service at very low temperatures
18.

Which of the following AWS A5.1 electrodes has a rutile covering:
- A.
  
  E 6010
- B.
  
  E 7016
- C.
  
  E 7018
- D.
  
  E 6013
19.

Welds made with very high heat input will show a reduction in:
- A.
  
  Tensile ductility
- B.
  
  Notch toughness
- C.
  
  Fatigue strength
- D.
  
  Creep resistance
20.

During PWHT of a complex fabrication, it is heated to the soak temperature at a much faster rate than specified by the procedure. This may:
- A.
  
  Cause excessive oxidation
- B.
  
  Not allow sufficient time to relieve stresses
- C.
  
  Introduce excessive compressive stresses
- D.
  
  Cause distortion
21.

When MAG welding in dip transfer (a short-circuiting mode) spatter can be reduced by:
- A.
  
  Using inductance
- B.
  
  Using 100%CO2
- C.
  
  Using Ar +30% He
- D.
  
  Increasing the stick-out length
22.

Repair welding of in-service plant and equipment may be more difficult than making repairs during initial fabrication because:
- A.
  
  The material may be contaminated
- B.
  
  Access to repair area may be difficult
- C.
  
  Positional welding may be needed
- D.
  
  All of the above
23.

For gammer radiography of a steel weld at 35mm thickness, the recommended isotope is:
- A.
  
  Thulium 170
- B.
  
  Ytterbium 169
- C.
  
  Iridium 192
- D.
  
  Cobalt 60
24.

The sensitivity of a radiograph is assessed:
- A.
  
  By using a densitometer
- B.
  
  By using an image quality indicator (IQI)
- C.
  
  From the KVA used
- D.
  
  From the source/tube to work standoff distance used
25.

A transverse tensile test from a Weld Procedure Approval Record (WPAR) test plate is used to measure:
- A.
  
  Tensile strength of the weld
- B.
  
  Tensile strength of the joint
- C.
  
  Stress/strain characteristics of the weld
- D.
  
  Stress/strain characteristics of the joint