API-577: Welding Inspection and Metallurgy
Free Practice Exam Questions (page: 4)
Updated On: 2-Jan-2026

In hardness testing of carbon steel weldment specimens, there is an approximate relationship between hardness and:

  1. Toughness
  2. Tensile strength
  3. Ductility
  4. Yield strength

Answer(s): B



When welding nickel alloys, it is important that:

  1. The bevel angle be wide enough to allow oscillation of welding torch.
  2. The cooling rate be controlled in order to prevent rapid cooling.
  3. Preheating is always performed to prevent hot cracking.
  4. A wide face and thinner bevel be used.

Answer(s): B



Which of the following can result from residual magnetism left in a partially completed weld?

  1. Excessive distortion
  2. Tendency of weld pool to be sluggish
  3. Deflection of the weld arc
  4. Solidification cracking

Answer(s): C



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

  1. Inadequate preheat
  2. Improper welding speed
  3. Improper heat input and improper welding technique
  4. Not using a low hydrogen electrode or improper shielding

Answer(s): C



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