MSSC MAINTENANCE AWARENESS EXAM 2023-2024
ACTUAL EXAM 250 QUESTIONS AND CORRECT
DETAILED ANSWERS WITH RATIONALES (VERIFIED
Zero defects and breakdowns is a goal of __________. - answer-TPM
There are seven (7) basic types of oils in use today. One of these is refrigeration oils which has a function
to __________. - answer-operate in both high and low temperatures
Low pressure in a hydraulic pump's suction line causes what malfunction? - answer-Cavitation
Lubricants provide six general applications for machines, which of the following is not a general function?
- answer-Allows system to be contaminated due to material in the lubricant
Predictive maintenance is a type of maintenance program that does what function? - answer-Identifies
machine part of component failures before a major breakdown
The thickness of oil is also referred to as __________. - answer-viscosity
Product buildup is the most common vibration problem on __________. - answer-Air fans
Reactive Maintenance is considered a(n) __________ activity. - answer-Unplanned maintenance
The most harmful act a maintenance person can do to a __________ is to get dirt in it. - answer-bearing
Too little lubrication of the __________ can cause seizing in a machine. - answer-bearings
The wear in a mechanical system is minimized by __________. - answer-lubrication
Oil that has been contaminated by __________ will have a milky appearance. - answer-water
,The __________ of a machine's operation is a means by which to predict component failure. -
answerVibration signature
Sight glasses are accurate on a gearbox __________. - answer-anytime whether running or not
Lubrication points should always be __________ before adding oil to a system. - answer-Cleaned off
The oil viscosity is a part of the information needed for __________. - answer-an oil analysis program
An indication of bearing problems could be __________. - answer-Suspended metal found during an oil
analysis
A viscosimeter is a device used for measuring the viscosity of an oil and is generally __________
accurate. - answer-95% to 99%
Detergent additives are used in oils __________. - answer-to break up and wash away deposits
A lube oil sample from a gearbox should be taken __________. - answer-as close to the gears as possible
To maintain equipment, technicians should __________. - answer-Perform daily equipment checks
The best sample collection procedure to use for an oil analysis is to __________. - answer-collect random
samples at the correct location and machine condition
The three qualities used when specifying a grease are: type of soap, hardness, and __________. -
answer-dropping point
Lubrication and other __________ maintenance activities should be checked daily to ensure they are
being performed. - answer-preventive
, A standard part of a preventive maintenance program is __________. - answer-Regular lubrication
__________ lubricants are ideal for use in extreme temperatures that would cause oils and greases to
freeze or burn out. - answer-Solid
ANSWERS)|AGRADE
Which of the following is not considered part of the power unit? - answer-Actuator
Most hydraulic motors are modified designs of __________. - answer-pumps
A double-acting cylinder will extend when oil flows into the __________. - answer-cap end
A __________ can show when DHC of a filter has been reached. - answer-bypass indicator
__________ are rated by the size of contaminates they remove. - answer-Hydraulic filters
A directional control valve is used to __________. - answer-change the direction of the fluid
Which of the following is NOT a type of a hydraulic piston motor? - answer-Spring loaded
Which of the following is not considered one of the five basic components of a hydraulic system? -
answer-Pressure
A __________ filter is designed to handle the full pressure of the hydraulic system. It uses a replaceable
cartridge and is enclosed in a metal casing called a bowl. - answer-pressure line filter
Hydraulics deals with the transmission and control of energy by a pressurized __________. -
answerliquid
When drawing a hydraulic schematic, one rule to remember is to always draw the components
__________. - answer-in a de-energized state
ACTUAL EXAM 250 QUESTIONS AND CORRECT
DETAILED ANSWERS WITH RATIONALES (VERIFIED
Zero defects and breakdowns is a goal of __________. - answer-TPM
There are seven (7) basic types of oils in use today. One of these is refrigeration oils which has a function
to __________. - answer-operate in both high and low temperatures
Low pressure in a hydraulic pump's suction line causes what malfunction? - answer-Cavitation
Lubricants provide six general applications for machines, which of the following is not a general function?
- answer-Allows system to be contaminated due to material in the lubricant
Predictive maintenance is a type of maintenance program that does what function? - answer-Identifies
machine part of component failures before a major breakdown
The thickness of oil is also referred to as __________. - answer-viscosity
Product buildup is the most common vibration problem on __________. - answer-Air fans
Reactive Maintenance is considered a(n) __________ activity. - answer-Unplanned maintenance
The most harmful act a maintenance person can do to a __________ is to get dirt in it. - answer-bearing
Too little lubrication of the __________ can cause seizing in a machine. - answer-bearings
The wear in a mechanical system is minimized by __________. - answer-lubrication
Oil that has been contaminated by __________ will have a milky appearance. - answer-water
,The __________ of a machine's operation is a means by which to predict component failure. -
answerVibration signature
Sight glasses are accurate on a gearbox __________. - answer-anytime whether running or not
Lubrication points should always be __________ before adding oil to a system. - answer-Cleaned off
The oil viscosity is a part of the information needed for __________. - answer-an oil analysis program
An indication of bearing problems could be __________. - answer-Suspended metal found during an oil
analysis
A viscosimeter is a device used for measuring the viscosity of an oil and is generally __________
accurate. - answer-95% to 99%
Detergent additives are used in oils __________. - answer-to break up and wash away deposits
A lube oil sample from a gearbox should be taken __________. - answer-as close to the gears as possible
To maintain equipment, technicians should __________. - answer-Perform daily equipment checks
The best sample collection procedure to use for an oil analysis is to __________. - answer-collect random
samples at the correct location and machine condition
The three qualities used when specifying a grease are: type of soap, hardness, and __________. -
answer-dropping point
Lubrication and other __________ maintenance activities should be checked daily to ensure they are
being performed. - answer-preventive
, A standard part of a preventive maintenance program is __________. - answer-Regular lubrication
__________ lubricants are ideal for use in extreme temperatures that would cause oils and greases to
freeze or burn out. - answer-Solid
ANSWERS)|AGRADE
Which of the following is not considered part of the power unit? - answer-Actuator
Most hydraulic motors are modified designs of __________. - answer-pumps
A double-acting cylinder will extend when oil flows into the __________. - answer-cap end
A __________ can show when DHC of a filter has been reached. - answer-bypass indicator
__________ are rated by the size of contaminates they remove. - answer-Hydraulic filters
A directional control valve is used to __________. - answer-change the direction of the fluid
Which of the following is NOT a type of a hydraulic piston motor? - answer-Spring loaded
Which of the following is not considered one of the five basic components of a hydraulic system? -
answer-Pressure
A __________ filter is designed to handle the full pressure of the hydraulic system. It uses a replaceable
cartridge and is enclosed in a metal casing called a bowl. - answer-pressure line filter
Hydraulics deals with the transmission and control of energy by a pressurized __________. -
answerliquid
When drawing a hydraulic schematic, one rule to remember is to always draw the components
__________. - answer-in a de-energized state
