MSSC-Maintenance Awareness Exam Test Questions And Answers Verified 100% Correct

MSSC-Maintenance Awareness Exam Test Questions And Answers Verified 100% Correct The 3-position, 5-way DCV is held in the mid-position by the __________. - ANSWER springs What are the two types of conductors used in a pneumatic system? - ANSWER supply line and actuator line The poppet of a pressure regulator is opened by the __________. - ANSWER adjustment spring Smaller dirt particles are removed from the air by the filter's __________. - ANSWER element The 3-way DCV spool is held in the energized position by the __________. - ANSWER operator The __________ filter, used for low pressure applications, has a removable cartridge that can be cleaned or replaced. - ANSWER spin-on Placing a filter in this location allows the filter to be cleaned without shutting down the machine. - ANSWER off-line A double-acting cylinder will extend when oil flows into the __________. - ANSWER cap end What is not considered one of the five basic components of a hydraulic system? - ANSWER pressure The hydraulic motor converts hydraulic flow into __________. - ANSWER rotary shaft speed When drawing a hydraulic schematic, one rule to remember is to always draw the components __________. - ANSWER in a de-energized state __________ prevents large particles from damaging the pump and is placed in the reservoir. - ANSWER Strainer Another name for a cylinder would be a(n) __________. - ANSWER actuator Most hydraulic motors are modified designs of __________. - ANSWER pumps __________ are rated by the size of contaminates they remove. - ANSWER Hydraulic Filters 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 The amount of dirt collected by a filter when the pressure reaches a predetermined point is called the __________. - ANSWER dirt holding capacity A __________ can show when DHC of a filter has been reached. - ANSWER bypass indicator The __________ filter, commonly used on suction or return lines, is similar in appearance to a pressure line filter but can not withstand the full pressure of the hydraulic system. - ANSWER Cartridge type filter The three qualities used when specifying a grease are: type of soap, hardness, and __________. - ANSWER dropping point The most often used grease is __________ because it provides excellant lubrication under moderate loads and also at high temperatures and speeds. - ANSWER lithium There are seven (7) basic types of oils in use today. One of these is refrigeration oils which has a function to__________. - ANSWER to operate in both high and low temperatures Lubrication and other __________ maintenance activities should be checked daily to ensure they are being performed. - ANSWER preventive Lubrication points should always be __________ before adding oil to a system - ANSWER cleaned off - Grease is made by adding a thickener such as __________ to a liquid lubricant. - ANSWER metallic soap The best data collection procedure to use for an oil analysis is to __________. ANSWER collect random samples and immediately send them out for analysis Loss of lubrication __________. - ANSWER is not a major cause of seal damage Fluid samples are normally taken from the middle of the reservoir while the machine is still in operation when analyzing a __________. - ANSWER gearbox White grease, or FGL-1, is used for what application? - ANSWER food processing While troubleshooting a hydraulic system, the technician finds that the oil in the reservoir has a milky color. What does this tell the technician? - ANSWER the oil has water in it A viscosimeter is a device used for measuring the viscosity of an oil and is generally __________ accurate. - ANSWER 95%-99% A lube oil sample from a gearbox should be taken __________. - ANSWER as close to the gears as possible An indication of bearing problems could be __________. - ANSWER suspended metal found during an oil analysis __________ lubricants are ideal for use in extreme temperatures that would cause oils and greases to freeze or burn out. - ANSWER Solid Product buildup is the most common vibration problem on __________. - ANSWER air fans Low pressure in a hydraulic pump's suction line causes what malfunction? - ANSWER Cavitation Bearing seals can be damaged by __________. - ANSWER using too much lubrication Sight glasses are accurate on a gearbox __________. - ANSWER when the gearbox is not running The action of old grease coming out somewhere is a good sign of __________. - ANSWER proper greasing The manual method of lubrication is used __________. - ANSWER in slow speed applications where equipment can be periodically shut down In the United States, oil viscosity is measured in __________. - ANSWER Saybolt Universal Seconds When lubricating a pillow block bearing, the user attaches the coupler into the grease