ACTUAL Exam Questions and CORRECT
Answers
R4B01-02-01-02 A form of lubrication that requires continual motion of a shaft or surface is: -
CORRECT ANSWER - Fluid film lubrication
R4B01-02-03-11 The lubricant for an anti-friction bearing: - CORRECT ANSWER -
Could be a semi-solid lubricant
R4B01-02-02-04 A journal bearing: - CORRECT ANSWER - Supports a shaft
R4B01-02-03-12 A thrust bearing which does not utilize the oil wedge principle of lubrication is
the: - CORRECT ANSWER - Collar type
R4B01-01-03-17If an oil must flow at a very low temperature[comma] it must have the
following additive: - CORRECT ANSWER - Pour point depressant
R4B01-02-02-08 A large journal bearing which is running hotter than normal can be cooled by: -
CORRECT ANSWER - Loosening the bearing caps
R4B01-01-02-04 The kind of grease used for heavily loaded machinery operating at slow speeds
is the: - CORRECT ANSWER - Specialty grease
R4B01-01-03-18 Which type of oil produces higher fluid friction? - CORRECT
ANSWER - High viscosity oil
R4B01-02-43-14 When inspecting a dismantled bearing, the first indication of a failing bearing
is: - CORRECT ANSWER - Roughness
, R4B01-01-03-20The instrument that measures the viscosity of an oil at a certain temperature as
it flows through a small diameter tube[comma] is called: - CORRECT ANSWER -A
Saybolt viscometer
R4B01-02-03-09 A collar thrust bearing: - CORRECT ANSWER - Has boundary
lubrication
R4B01-01-02-08 A material that is commonly used as a solid lubricant is: - CORRECT
ANSWER - Molybdenum disulfide
R4B01-02-03-13 An anti-friction bearing: - CORRECT ANSWER - Has rolling friction
R4B01-01-03-22 Air compressor oil should: - CORRECT ANSWER - Have low carbon
residue
R4B01-02-02-05 The ability of an oil to lift and support heavy loads depends upon: - CORRECT
ANSWER - Hydraulic pressure
R4B01-02-03-10 A type of anti-friction bearing is the _____ . - CORRECT ANSWER -
Ball bearing
R4B01-02-02-07 A shell type bearing: - CORRECT ANSWER - Is used for heavy loads
R4B01-02-02-06 The groove that is cut in the top half in the lining of a shell bearing should not
extend closer to the ends than: - CORRECT ANSWER - 1.25 cm
R4B01-02-01-01 Fluid film lubrication: - CORRECT ANSWER - Supports heavy loads
R4B01-01-02-11 The _____ number of oil indicates the acidity of oil. - CORRECT
ANSWER - Neutralization