API API-577 Online Practice Questions and Exam Preparation

API API-577 Online Questions & Answers

• Question 31:

  What is the major cause of lack of fusion in all welding processes involving carbon steel?

  A. Inadequate preheat
  B. Improper welding speed
  C. Improper heat input and improper welding technique
  D. Not using a low hydrogen electrode or improper shielding
  C. Improper heat input and improper welding technique

• Question 32:

  When welding using the GTAW process, which of the following best describes the appearance of a transverse crack on a radiograph?

  A. A feathery line of longitudinal orientation located at the center of the weld image.
  B. Elongated lines of darker density, irregular in width, and slightly winding in the lengthwise direction.
  C. A feathery, twisted line of darker density running across the width of the weld.
  D. An irregular darker line near the center of the width of the weld image along the edge of the root pass image.
  C. A feathery, twisted line of darker density running across the width of the weld.

• Question 33:

  For carbon steels, the HAZ includes those regions heated to a temperature greater than:

  A. 1050°F (556°C)
  B. 1150°F (621°C)
  C. 1250°F (677°C)
  D. 1350°F (730°C)
  B. 1150°F (621°C)

• Question 34:

  Which of the following statements is true?

  A. PQRs qualified on P8 materials also qualify for P1 materials.
  B. Welding procedures must be supported by more than one PQR.
  C. All PQRs must be qualified with impact testing.
  D. One PQR may support several WPSs.
  D. One PQR may support several WPSs.

• Question 35:

  Items to be included in the WPS for GMAW process are:

  A. Joint design and test coupon thickness.
  B. Base metal P-number and deposited metal thickness.
  C. Type of welding process and test coupon thickness.
  D. Electrode-flux class and electrical characteristics.
  C. Type of welding process and test coupon thickness.

• Question 36:

  Base metals are assigned P-numbers by the ASME Code, Section IX to reduce the number of:

  A. Required welding procedure specifications.
  B. Required welding procedure qualifications.
  C. Required procedure and performance qualifications.
  D. Required mechanical tests.
  C. Required procedure and performance qualifications.

• Question 37:

  Filler metals are grouped according to their A-numbers to:

  A. Minimize the number of performance qualifications.
  B. Minimize the number of welding procedure qualifications.
  C. Define the welding characteristics.
  D. Designate similar chemical compositions.
  D. Designate similar chemical compositions.

• Question 38:

  What is the most appropriate action when an inspector finds improperly marked filler materials?

  A. Accept them if nonessential variable.
  B. Reject them.
  C. Re-qualify the WPS.
  D. Accept them if the markings are corrected.
  B. Reject them.

• Question 39:

  For hot tap and in-service welding, above what carbon equivalent limit is it recommended to use extra low hydrogen electrodes to weld carbon steels?

  A. 0.30%
  B. 0.35%
  C. 0.42%
  D. 0.48%
  C. 0.42%

• Question 40:

  Items to be included in the PQR for the SMAW process are:

  A. Welding process used and AWS classification numbers.
  B. Welding process used and P-numbers of coupon welded.
  C. P-numbers of coupon welded and AWS classification numbers.
  D. Electrode-flux class and electrical characteristics.
  B. Welding process used and P-numbers of coupon welded.