CMRP Lubrication Management

Question 1

What is the primary purpose of lubrication in rotating machinery?

Accepted Answer

Reduce friction and wear between moving surfaces

Answer

Increase equipment operating temperature

Answer

Eliminate the need for periodic inspections

Answer

Increase the load capacity of structural components

Question 2

Which lubrication delivery method distributes oil to bearings and gears by the action of rotating components contacting an oil sump?

Accepted Answer

Splash lubrication

Answer

Forced pressure circulation

Answer

Wick or pad lubrication

Answer

Oil mist lubrication

Question 3

A lubricant with a high Viscosity Index (VI) is preferred for equipment with wide temperature swings because it:

Accepted Answer

Maintains relatively stable viscosity across a broad temperature range

Answer

Has a lower flash point for easier ignition

Answer

Contains more anti-wear additives per unit volume

Answer

Is suitable only for very low-speed applications

Question 4

Before mixing lubricants from two different manufacturers or product lines, the best practice is to:

Accepted Answer

Verify compatibility through testing or manufacturer guidance

Answer

Mix them freely since all mineral oils are compatible

Answer

Always blend at a 50/50 ratio to dilute additives equally

Answer

Add a universal additive package to neutralize differences

Question 5

Which grading system is used to classify the consistency (firmness) of grease for bearing applications?

Accepted Answer

NLGI consistency grade

Answer

SAE viscosity grade

Answer

ISO VG classification

Answer

AGMA gear oil grade

Question 6

What is the primary cause of lubricant oxidation during service?

Accepted Answer

Prolonged exposure to heat and oxygen

Answer

Excessive cooling below the pour point

Answer

Low operating pressure in the lubrication circuit

Answer

Absence of ferrous wear particles in the oil

Question 7

Which oil sampling practice provides the most representative sample for condition monitoring analysis?

Accepted Answer

Draw a sample from a live zone in the system during normal operation

Answer

Drain the sump completely and sample from the drain plug

Answer

Sample fresh oil from the drum prior to filling

Answer

Collect a sample after equipment has been shut down for 24 hours