API-571 Exam Practice Test Instant Access

Question 1

Fatigue will not occur in carbon steel if stresses are below the:

ATransition limit.

BEndurance limit.

CHardening limit.

DSpeed limit.

Answer : B

Question 2

Which of the following materials are affected by mechanical fatigue cracking?

AOnly carbon steel

BOnly carbon steel and chromes

COnly carbon steel, and high nickel alloys

DAll materials

Answer : B

Question 3

Which of the following materials is least affected by atmospheric corrosion?

ACarbon steel

BChromes

CStainless steels

DCopper alloyed with aluminum

Answer : C

Question 4

Atmospheric corrosion is of greatest concern in:

ADry climates in rural locations.

BDry climates in industrial locations.

CWet climates in rural locations.

DWet climates in industrial locations.

Answer : D

Question 5

Which of the following is not a primary factor contributing to erosion-corrosion?

AImpact angle (angle that impacting particles strike metal)

BTensile strength of the metal

CVelocity of impacting particles

DCorrosiveness of the environment

Answer : B

Question 6

A brittle fracture:

AIs caused by stress cycles.

BIs always the result of thermal stresses.

CGrow very rapidly with minimum deformation prior to failure.

DGrows slowly and is dependent on time and stress.

Answer : C

Question 7

300 series stainless steel heater tubes in an oil-burning furnace in the hydrocracker began to leak and the furnace was brought down. What was the probable cause of the cracking?

AChloride stress corrosion

BPolythionic acid stress corrosion

CAmine stress corrosion

DStress oriented hydrogen induced cracking

Answer : B

API-571 Corrosion and Materials Exam Practice Test