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MLA II - Practice Exam
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MLA II - Practice Exam
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MLA II - Practice ExamWhat can be the expected trend for the acid number of a gear oil over time with no
lubricant top ups? a. The value will decrease. b. The value will increase. c. The value
will remain steady. d. The value will first decrease and then increase as the oil ages. -
ANS-d. The value will first decrease and then increase as the oil ages.
2. What can be the expected trend for the base number of a diesel engine oil over time
with no lubricant top ups? a. The value will decrease. b. The value will increase. c. The
value will remain steady. d. The value will first decrease and then increase as the oil
ages. - ANS-a. The value will decrease.
3. The most economically beneficial application for condition monitoring by oil analysis
is when the information is applied to which type of maintenance strategy a. Proactive b.
Regressive c. Predictive d. Run to failure - ANS-a. Proactive
4. Oil analysis would not be applied to which of the following scenarios a. Oil in storage
b. Incoming Lubricants c. While the oil is "in use" d. Sealed bearings - ANS-d. Sealed
bearings
5. An example of Proactive use of oil analysis would require observing which of the
following conditions: a. Wear Debris Analysis b. Analytical Ferrorgraphy c. Direct Read
Ferrorgraphy d. Contamination Analysis - ANS-d. Contamination Analysis
6. Additive depletion is routinely measured in the laboratory via a. Ferrous Density b.
Flash Point c. FTIR d. Particle Counting - ANS-c. FTIR
7. The two primary methods for wear debris detection are a. Filtergram and Ferrogram
b. Elemental Analysis and Particle Counting c. Ferrous Density and Analytical
Ferrography d. Ferrous Density and Elemental Analysis - ANS-d.. Ferrous Density and
Elemental Analysis
8. The three categories of oil analysis are a. Viscosity analysis, elemental analysis,
FTIR analysis b. Fluid Properties, Contamination, Wear debris c. Analytical Ferrography,
Viscosity analysis, particle counting d. Proactive, Predictive, and Reactive - ANS-b.
Fluid Properties, Contamination, Wear debris
, 9. The best screening test for ferrous wear debris in an oil sample is a. Atomic Emission
Spectroscopy b. Fourier Transform Infra-Red Spectroscopy c. Ferrous Density d.
Viscosity - ANS-c. Ferrous Density
10. The best advantage of using Analytical Ferrography is a. The ability to achieve
quantitative measurements of wear debris b. The ability to achieve qualitative
descriptions of wear debris c. Ease of training allows for onsite use d. Can be used for
nonferrous wear debris screening - ANS-b. The ability to achieve qualitative
descriptions of wear debris
11. A typical cause of surface fatigue is a. Low oil viscosity b. Misalignment c. Loss of
EP/AW additives d. Contaminant Particles - ANS-d. Contaminant Particles
12. The effect water can have on a bearing before the oil is even cloudy (500 PPM) is a.
Loss of only 10% of bearing life expectancy b. Water is not a problem before the oil
becomes cloudy c. Loss of 55% of bearing life expectancy d. Minimal fatigue wear
resulting in approximately 25% reduction in life expectancy - ANS-c. Loss of 55% of
bearing life expectancy
13. Common contaminants within lubrication systems could include a. Additives b. VI
Improvers c. Moisture d. Seal material - ANS-c. Moisture
14. Contaminant degradation effects include a. Viscosity change b. Additive restoration
c. Life extension d. Adhesive wear - ANS-a. Viscosity change
17. Moisture Contamination a. Is only identifiable when the vapor forms a cloud b. Is
most harmful in the free state c. Can damage components before being visually
observable d. Is most severe with new, R&O circulating (Turbine) oils - ANS-c. Can
damage components before being visually observable
20. How does vibration data and oil sample data relate from a condition-monitoring
standpoint? a. Oil analysis is superior to vibration analysis as a condition monitoring
tool. b. Vibration analysis is superior to oil analysis as a condition monitoring tool. c. Oil
& vibration analysis results often trend well with one another. d. Vibration and onsite oil
analysis are sufficient. - ANS-c. Oil & vibration analysis results often trend well with one
another
21. When evaluating the ISO cleanliness code under 4406:99, a value of 16/13
indicates a. The code assigned to particles at the >5 and >15 levels b. The code
assigned to particles at the >6 and >14 levels c. The code assigned to particles at the
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