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NEW QUESTION # 37
The direction of magnetic flux can be confirmed by the use of a:
- A. Flux line sensitizer.
- B. Magnetic-field-sensitive crayon.
- C. Calibration gauge.
- D. Pie gauge.
Answer: D
NEW QUESTION # 38
Filler metals are grouped according to their A-numbers to:
- A. Minimize the number of performance qualifications.
- B. Define the welding characteristics.
- C. Designate similar chemical compositions.
- D. Minimize the number of welding procedure qualifications.
Answer: C
NEW QUESTION # 39
The simplest weldability tests are those that evaluate:
- A. Cracking and corrosion resistance of the weld.
- B. Strength and ductility of the weld.
- C. Porosity and slag inclusions of the weld.
- D. Ductility and hardness of the weld.
Answer: B
NEW QUESTION # 40
Which of the following statements concerning electrode storage in ovens is true?
- A. Low-hydrogen electrodes should never be stored with stainless-steel electrodes.
- B. Low-hydrogen electrodes may be stored in ovens with cellulose-based electrodes, but must be in their original, unopened containers.
- C. Electrode ovens should be heated by any means, but must have automatic heat controls and visible temperature indicators.
- D. Electrodes should never be stored in an oven that is used for food storage.
Answer: A
NEW QUESTION # 41
What is the "area of interest" on a weld radiograph?
- A. Only the area of contrasting density
- B. The entire radiograph minus 2 in. (50.8 mm) from the edges
- C. The specific portion of a radiograph that needs to be evaluated
- D. The portion that is less than 3t from the center of the radiograph, where t is the thickness of the weld
Answer: C
NEW QUESTION # 42
What is the Brinell hardness limit value for 1-1/4 Cr -1/2 Mo steel in refining service?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
NEW QUESTION # 43
A root opening of a groove weld is:
- A. The surface of a joint member included in the groove.
- B. A separation at the joint root between the work pieces.
- C. The beveled surface of the joint members.
- D. That portion of the groove face adjacent to the joint root.
Answer: B
NEW QUESTION # 44
Eddy current can be used to measure the:
- A. Holidays in coatings or claddings.
- B. Thickness of parent metal below alloy metal claddings.
- C. Extent of bonding of coatings or claddings.
- D. Thickness of surface coatings or cladding thickness.
Answer: D
NEW QUESTION # 45
When radiographic examination is used for welder qualification utilizing the GMAW-S process, the minimum length of the test coupon to be examined is:
- A. Radiographic examination is not allowed.
- B. 36 in. for welder operator qualification.
- C. 6 in. for welder qualification.
- D. The entire weld circumference for pipe coupon.
Answer: C
NEW QUESTION # 46
Which of the following transfer methods associated with GMAW is characterized by a highly directed stream of discrete drops that are accelerated by arc forces, and negligible spatter?
- A. Spray transfer
- B. Globular transfer
- C. Short circuiting transfer
- D. Pulsed droplet transfer
Answer: A
NEW QUESTION # 47
Rules for qualifying welding operators using radiography on a production weld require what minimum weld length to be examined?
- A. 36 in. (900 mm)
- B. 6 in. (150 mm)
- C. 12 in. (300 mm)
- D. 24 in.(600 mm)
Answer: C
NEW QUESTION # 48
What is the liquid flow rate range that should be maintained in piping to be hot tapped?
- A. 4.1 - 5.5 ft./sec (1.25 - 1.68 m/sec)
- B. 1.3 - 4.0 ft./sec (0.40 - 1.20 m/sec)
- C. 2.3 - 3.3 ft./sec (0.70 - 1.00 m/sec)
- D. 0.05 - 2.7 ft./sec (0.015 - 0.82 m/sec)
Answer: B
NEW QUESTION # 49
When verifying that the filler metal selection is appropriate for the base metal being welded, an inspector should consider:
- A. Need for postweld heat treatment (PWHT).
- B. Chemical composition.
- C. Tensile strength to be higher than the base metal.
- D. Acceptability of physical properties.
Answer: B
NEW QUESTION # 50
One limitation of a shielded metal arc welding (SMAW) process is that:
- A. The process cannot be used in areas of limited access.
- B. The process is sensitive to wind and draft.
- C. Deposition rates are lower than GMAW.
- D. It has low tolerance for contaminants.
Answer: C
NEW QUESTION # 51
In hardness testing of carbon steel weldment specimens, there is an approximate relationship between hardness and:
- A. Toughness
- B. Ductility
- C. Tensile strength
- D. Yield strength
Answer: C
NEW QUESTION # 52
What is the major cause of lack of fusion in all welding processes involving carbon steel?
- A. Improper welding speed
- B. Improper heat input and improper welding technique
- C. Inadequate preheat
- D. Not using a low hydrogen electrode or improper shielding
Answer: B
NEW QUESTION # 53
A four-digit designation for a SMAW electrode under AWS classification uses the third digit to define the:
- A. Coating characteristics.
- B. Chemical composition.
- C. Strength of the filler metal.
- D. Welding position.
Answer: D
NEW QUESTION # 54
Codes/standards sometimes specify impact testing of weldments at minimum design metal temperatures to:
- A. Assure that the welded material has sufficient toughness to resist brittle fracture.
- B. Assure that the welded material has sufficient tensile strength to avoid failure at design loads.
- C. Assure that the welded material has sufficient ductility to assist brittle fracture.
- D. Assure that the welded material has sufficient yield strength to avoid brittle fracture.
Answer: A
NEW QUESTION # 55
When welding nickel alloys, it is important that:
- A. The bevel angle be wide enough to allow oscillation of welding torch.
- B. Preheating is always performed to prevent hot cracking.
- C. A wide face and thinner bevel be used.
- D. The cooling rate be controlled in order to prevent rapid cooling.
Answer: D
NEW QUESTION # 56
Hot tapping and in-service welding should be carried out only with:
- A. Low-hydrogen root pass and cellulosic weld out.
- B. Steels that have a carbon equivalent below 0.30.
- C. Low-hydrogen consumables and electrodes.
- D. Cellulosic-type electrodes to reduce penetration.
Answer: C
NEW QUESTION # 57
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