MSSC Certification Exam QUESTIONS WITH CORRECT ANSWERS UPDATE 2023

MSSC Certification Exam QUESTIONS WITH CORRECT ANSWERS UPDATE 2023 A burn or pungent odor of oil indicates - ANSWER excessive temperature A Chain should be replaced when its length becomes ______longer than the original length. - ANSWER 3 percent A common sign of a misaligned coupling is _____________. - ANSWER excessive vibration A multimeter is a multipurpose devise that can measure - ANSWER voltage, current, and resistance A power diagram is used in addition to a ladder diagram to determine_________. - ANSWER All of these (How the input functions on the machine, The sequence of operations, How the output functions on the machine) A power tool has the ground prong broken off of the plug on the power cord. What should be done? - ANSWER Remove the power tool from service A shaft coupling may be out of round if dial indicator shows _____________. - ANSWER any movement A sight glass in a reservoir usually indicates the ______ of fluid. - ANSWER level A tool should be sharpened - ANSWER When an unacceptable surface finish is present A viscos meter is a device used for measuring the viscosity of an oil and is generally _______ accurate. - ANSWER 95%-99% A well designed workstation places tools and equipment where they can be - ANSWER available with minimum stress A workstation should be designed to minimize motions that can - ANSWER cause repetitive/ stress injuries All documentation of preventive maintenance should be kept - ANSWER in a designated, safe and secure location An electrical diagram that arranges wires of a circuit into order rows is called a(n) _____________. - ANSWER ladder diagram An employee come to work on a rainy day and finds water dripping on tools in their workstation. What should the employee do first? - ANSWER report the situation to the supervisor Because dial indicators are fairly delicate, they should _________ during adjustment of the motor position. - ANSWER be removed Before adjusting motor position during a shaft alignment always make sure to remove the _____________. - ANSWER dial indicator Both analog and digital voltmeters measure - ANSWER Potential difference Circuit testers determine if ______ electricity is present. - ANSWER AC Daily maintenance involves daily records because - ANSWER Recurring events can be analyzed to troubleshoot problems Records indicate how long a machine will run without lubrication Devises called ____________ often serve as the brains of the automated machine. - ANSWER relays Documentation that should be kept regarding a specific piece of equipment includes - ANSWER maintenance log Feeler gauge, rulers, height gauges and dial indicators are commonly used for which task? - ANSWER alignment of industrial machines For purposes of an oil analysis, one important category of information will be the - ANSWER Oil viscosity Gas cylinders need to be chained securely to keep them - ANSWER from falling or tipping over Heavy axial loads are better handled by ________? - ANSWER angular contact bearings High temperature can _____________ of a bearing. - ANSWER limit life Housekeeping inspections and audits should include - ANSWER Unbiased auditors or inspectors How is a cam likely to be mounted on a shaft? - ANSWER welded How many extension cords are permitted to run across the floor of a workstation? - ANSWER 0 If a company does follow-up work after a PM that is considered ________maintenance. - ANSWER reactive If a machine is expected to have downtime for several shifts, the appropriate communication between shifts for Lockout/Tagout procedures is - ANSWER verify energy state on machine, then change locks If a motor starts blowing fuses or tripping thermals, the most likely cause is - ANSWER An overload motor If a technician has unwired a motor from a disconnect and the circuit breaker still trips, the next logical step is to ______ and see if the breaker trips again. - ANSWER replace the circuit breaker If suspended metal products were found in oil analysis, it would indicate - ANSWER Bearing problems In a PM audit, the _____ would likely be negatively impacted if there were a large number of uncompleted PM work orders. - ANSWER critical path It is important to have a/an ____________ to complete the PM work on a machine - ANSWER completion date Leveling all machine components prior to coupling them _____________. - ANSWER reduces the number of needed shims Low pressure in a hydraulic pump's suction line causes what malfunction? - ANSWER cavitation Lubrication and other _____________ maintenance activities should be checked daily to ensure they are performed. - ANSWER preventive Machine closures usually have _______ to prevent entry during machine operation. - ANSWER limit switch - interlocks and photocells Making sure that a motor shaft is level - ANSWER increases stress on the motor Misaligned coupling can cause _________ in machinery. - ANSWER vibration Motor shaft runout is checked to make sure of proper _____________. - ANSWER alignment of mating components NOT logic is formed by _____________. - ANSWER one normally closed switch Oxygen cylinders must be kept ______ away from combustion points. - ANSWER 25 ft. Predictive maintenance is a type of maintenance program that does what function? - ANSWER identifies machine parts or components failures before a major breakdown Preventive maintenance schedule would commonly include - ANSWER frequency Prior to shutting down a machine for preventive maintenance, the operator must - ANSWER remove all the debris and any residue from the machine Proper storage of tools helps keep them - ANSWER in good working order Reactive Maintenance is considered a(n) _____________ activity. - ANSWER unplanned maintenance Scheduled housekeeping inspections would ordinarily include - ANSWER verification that the floor is clean and free of debris Scheduled replacement of minor parts that tend to wear out quickly is an important parts of _______maintenance - ANSWER preventive Seizing, in reference to bearings and shafts, is a condition resulting from - ANSWER lack of lubrication