Free API-571 Exam Braindumps (page: 64)

Page 64 of 114

__________ testing is the best method to determine the susceptibility of a material to hydrogen stress cracking.

  1. Hardness
  2. Acoustic
  3. SWUT
  4. AUT

Answer(s): A



In a pump, the difference between the actual pressure, or head, of a liquid available (measured on the suction side) and the vapor pressure of that liquid is called Net Positive Suction Head (NPSH) available. The minimum head required to prevent cavitation with a given liquid at a given flow rate is called Net Positive Suction Head __________. Inadequate NPSH can result in cavitation.

  1. Surplus
  2. Required
  3. Reserve
  4. None of the above

Answer(s): B



Which of the following are affected by sulfidation?

  1. Carbon steel
  2. 300 Series SS
  3. 400 Series SS
  4. All of the above

Answer(s): D



What is the chemical symbol for butane of butylenes?

  1. C3
  2. C4
  3. CH4

Answer(s): C



Page 64 of 114



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