CMRP Premium Practice Quiz 1
12
a
b
c
d
13
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b
c
d
The dropping point of a lubricating grease is an indication of the heat resistance of the grease and is the temperature at
which it passes from a semi-solid to a liquid state under specific test conditions. It is dependent on the type of thickener
used and the cohesiveness of the oil and thickener of a grease
Question 12
What is the beta ratio of a filter media that has a particle size of 50,000ppm at upstream and 500ppm downstream?
99
100
0.01
5000
Overall explanation
Beta Ratio refers to the efficiency in which a given filter element removes particles of a given size. The Beta Ratio is
calculated using the ISO multi-pass test standard.
The formula for Beta ration = total particles upstream/ total particle downstream = 50000/500 = 100
Question 13
Which of the following metrics definitions is not accurate?
"in
operation"
Uptime - % of time you run producing quality product at design rate
Schedule compliance - how often mechanics are pulled off their current work to another task
Backlog - how long it takes to fix broken equipment
MTBF - a measure or indicator of equipment life expectancy
Overall explanation
but
yet performed
A maintenance backlog is a list of tasks that are *
ready to be performed to repair or maintain equipment. These tasks are
mandatory because they help to prevent safety issues, breakdowns, failures, or damage. The backlog is wrongly defined as
how long it takes to fix broken equipment in the list options, making it the correct answer choice.
Question 14
Which fluid among the following has the best heat transfer properties
Liquid Nitrogen
Synthetic oil
Water
Mineral oil
Overall explanation
Thermal properties of material decide how it reacts when it is subjected to heat fluctuation (excessive heat or very low heat,
for example). The major components of thermal properties are:
Heat capacity
Thermal Expansion
Thermal conductivity
Thermal stress
Water has the best heat transfer properties compared to mineral and synthetic oils, and air because of its higher heat
transfer coefficient.
Question 15
New bulk lubricant shipments should be supplied with a ____________________ from the blend plant to determine product
specification.
Oil sample results
Certificate of Analysis
MSDS
Bill of Material
Overall explanation
Certificates of Analysis. A Certificate of Analysis is a document issued by Quality Assurance that confirms that a regulated
product meets its product specification. They commonly contain the actual results obtained from testing performed as
part of quality control of an individual batch of a product.
New bulk lubricant shipments should be supplied with a certificate of analysis from the blend plant to determine product
specifications.
Question 16
A team tasked to perform FMEA on a piece of plant equipment and they will be using RPN to rank the failure modes. What
is the meaning of RPN
Records Preparation Number
Revolutions Per Note
Risk Priority Number
Risk Preventive Number
Overall explanation
Risk Priority Number (RPN) is a measure used when assessing the risk to help identify critical failure modes associated with
a design or process. The RPN values range from 1 (absolute best) to 1000 (absolute worst).
-or
-
not
14
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15
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16
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