API-571 Exam Practice Test Instant Access

Question 1

What treatment is used to prevent boiler feed water corrosion?

AOxide scavengers are added to process

BOxygen scavengers are added to process

CSulfide scavengers are added to process

DSulfur scavengers are added to process

Answer : B

Question 2

Time to failure by thermal fatigue is primarily affected by:

AMagnitude of stress and operating temperature.

BMagnitude of stress and number of cycles.

CCarbon content in material and operating temperature.

DCarbon content in material and number of cycles.

Answer : B

Question 3

Thermal fatigue is caused by:

ACyclic stresses that come from temperature variations.

BLong term operation at elevated temperatures.

CExcessive thermal growth.

DHours of physical activity during a hot summer day.

Answer : A

Question 4

Which of the following is not a method used to prevent brittle fracture?

AThorough inspections

BStrict controls on selecting construction materials

CPost weld heat treatment

DControlling minimum operating temperatures

Answer : A

Question 5

Most brittle failures appear as:

ABranched cracking.

BIntergranular cracking.

CDuctile tears.

DCleveage.

Answer : D

Question 6

Most brittle failures occur:

ABelow the impact transition temperature.

BOn thinner materials.

COn ''clean'' steel.

DWhile in operation at elevated temperatures.

Answer : A

Question 7

Which of the following is not a critical factor that contributes to a brittle fracture?

AThe material's fracture toughness

BMaximum operating temperature

CStress concentration at a flaw

DMagnitude of the residual stresses

Answer : B

API-571 Corrosion and Materials Exam Practice Test