API 571 practice questions mechanical engineering laboratory course II (University of Ilorin)

API 571 practice questions


mechanical engineering
laboratory course II (University
of Ilorin)

, API 571
1. is a change in the microstructure of A
certain carbon steels and
0.5 Mo steels after long term operation in the 800º F
to 1100º F range.
A. Graphitization
B. Softening
C. Temper Embrittlement
D. Creep
1. 2. What structure is 304 stainless steel? B
A. Martensitic
B. Austenitic
C. Duplex
D. Ferritic
2. 3. is the result of cyclic stress caused by B
variations in temperature.
A. Creep
B. Thermal Fatigue
C. Cyclic Cracking
D. Stress Corrosion Cracking
3. 4. General or localized corrosion of carbon steels C
and other metals caused by dissolved salts, gases,
organic compounds or microbiological activities is
called .
A. Flue Gas Corrosion
B. Atmospheric Corrosion
C. Cooling Water Corrosion
D. None of the Above
E. All of the Above
4. 5. What structure is 410 stainless steel? A
A. Martensitic
B. Austenitic
C. Duplex
D. Ferritic
5. D

, API 571


6. The sudden rapid fracture under stress (residual
or applied) where the material exhibits little or no
evidence of ductility or plastic deformation is
called
.
A. 885º F Embrittlement
B. Temper Embrittlement
C. Stress Corrosion Cracking
D. Brittle Fracture
6. 7. What structure is 409 stainless steel? D
A. Martensitic
B. Austenitic
C. Duplex
D. Ferritic
7. 8. Low alloy steels contain a maximum of D
chrome.
A. 5%
B. 6%
C. 7.5%
D. 9%
8. 9. Which of the following can be affected by 885º F E
Embrittlement?
A. 410 SS
B. 430 SS
C. 308 SS
D. Alloy 2205
E. A, B and D
9. 10. For 5Cr-0.5Mo, what is the threshold temperature B
for creep?
A. 500º F
B. 800º F
C. 600º F
D. 700º F
10. 11. has been a major problem on coke drum A
shells.

, A. Thermal fatigue