Download MSSC Maintenance Awareness 2025: Complete 250 Questions with Detailed Verified Answers and more Quizzes Microelectronic Circuits in PDF only on Docsity!
MSSC MAINTENANCE AWARENESS 2025
NEWEST VERSIONS(VERSION A&B)
COMPLETE 250 QUESTIONS WITH
DETAILED VERIFIED ANSWERS (100%
CORRECT) /ALREADY GRADED A+
"Equal to the power supply voltage - CORRECT ANSWER=> In a parallel circuit with a constant voltage
power supply, the voltage drop across each branch is __________."
"Parallel - CORRECT ANSWER=> A(n) __________ circuit is one in which there is more than one path
for current to travel."
"Current - CORRECT ANSWER=> An ammeter is used to measure __________."
"Across a component, from a reference - CORRECT ANSWER=> The two ways to measure voltage are
__________ and __________."
"Potential difference - CORRECT ANSWER=> Both analog and digital voltmeters measure __________."
"Short circuit - CORRECT ANSWER=> When current in a circuit is too high, it is usually the result of too
many loads or a __________."
"Conduit - CORRECT ANSWER=> Electrical wiring that runs in exposed locations must be protected by
pipe or tubing called __________."
"Any - CORRECT ANSWER=> The total power in __________ electrical circuit is calculated by finding
the sum of the individual component power consumption."
"Degrees - CORRECT ANSWER=> The amount two electrical waveforms are out of phase is measured in
__________."
"V=I(current)*R(resistance) - CORRECT ANSWER=> The Ohm's Law formula for calculating voltage is
__________."
"P = I(current)*E(voltage) - CORRECT ANSWER=> What is the power formula?"
"Overload clutch - CORRECT ANSWER=> The type of overload protection that protects the motor by
disconnecting it physically instead of electrically is a(n) __________."
"Power - CORRECT ANSWER=> The measure of energy consumed by a circuit is called __________."
"2 - CORRECT ANSWER=> The power is connected to a single phase motor using __________ lines."
"Sum - CORRECT ANSWER=> Kirchoff's Voltage Law for a series circuit shows that the total voltage
dropped in a series circuit is equal to the __________ of the individual voltage drops."
"Circuit breakers can be reset and used again - CORRECT ANSWER=> The difference between a fuse
and a circuit breaker is __________."
"Overload clutch - CORRECT ANSWER=> When something binds or jams in machinery, the machinery is
protected by a(n) __________."
"Both - CORRECT ANSWER=> Which is considered a fluid system, pneumatics or hydraulics?"
"kPa - CORRECT ANSWER=> The S.I. unit for pressure is __________."
"Directional control valve - CORRECT ANSWER=> DCV stands for __________."
"Springs - CORRECT ANSWER=> The 3-position, 5-way DCV is held in the mid-position by the
__________."
"Supply line and actuator line - CORRECT ANSWER=> What are the two types of conductors used in a
pneumatic system?"
"Adjustment spring - CORRECT ANSWER=> The poppet of a pressure regulator is opened by the
__________."
"Dirt holding capacity - CORRECT ANSWER=> The amount of dirt collected by a filter when the
pressure reaches a predetermined point is called the __________."
"Bypass Indicator - CORRECT ANSWER=> A __________ can show when DHC of a filter has been
reached."
"Cartridge type filter - CORRECT ANSWER=> 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."
"Dropping point - CORRECT ANSWER=> The three qualities used when specifying a grease are: type of
soap, hardness, and __________."
"Lithium - CORRECT ANSWER=> The most often used grease is __________ because it provides
excellant lubrication under moderate loads and also at high temperatures and speeds."
"Metallic soaps - CORRECT ANSWER=> Grease is made by adding a thickener such as __________ to a
liquid lubricant.
"Operate in both high and low temperatures - CORRECT ANSWER=> There are seven (7) basic types of
oils in use today. One of these is refrigeration oils which has a function to__________."
"Preventive - CORRECT ANSWER=> Lubrication and other __________ maintenance activities should
be checked daily to ensure they are being performed."
"Cleaned off - CORRECT ANSWER=> Lubrication points should always be __________ before adding oil
to a system"
"Collect random samples and immediately send them out for analysis - CORRECT ANSWER=> The best
data collection procedure to use for an oil analysis is to __________."
"is not a major cause of seal damage - CORRECT ANSWER=> Loss of lubrication __________."
"Gearbox - CORRECT ANSWER=> Fluid samples are normally taken from the middle of the reservoir
while the machine is still in operation when analyzing a __________."
"Food processing - CORRECT ANSWER=> White grease, or FGL-1, is used for what application?"
"the oil has water in it - CORRECT ANSWER=> While troubleshooting a hydraulic system, the technician
finds that the oil in the reservoir has a milky color. What does this tell the technician?"
"95%-99% - CORRECT ANSWER=> A viscosimeter is a device used for measuring the viscosity of an oil
and is generally __________ accurate."
"As close to the gears as possible - CORRECT ANSWER=> A lube oil sample from a gearbox should be
taken __________."
"Suspended metal found during an oil analysis - CORRECT ANSWER=> An indication of bearing
problems could be __________."
"Solid - CORRECT ANSWER=> __________ lubricants are ideal for use in extreme temperatures that
would cause oils and greases to freeze or burn out."
"Air fans - CORRECT ANSWER=> Product buildup is the most common vibration problem on
__________."
"Cavitation - CORRECT ANSWER=> Low pressure in a hydraulic pump's suction line causes what
malfunction?"
"Using too much lubrication - CORRECT ANSWER=> Bearing seals can be damaged by __________."
"When the gearbox is not running - CORRECT ANSWER=> Sight glasses are accurate on a gearbox
__________."
"Proper greasing - CORRECT ANSWER=> The action of old grease coming out somewhere is a good sign
of __________."
"in slow speed applications where equipment can be periodically shut down - CORRECT ANSWER=>
The manual method of lubrication is used __________."
"Saybolt Universal Seconds - CORRECT ANSWER=> In the United States, oil viscosity is measured in
__________."
"until old grease begins to flow out of the bearing - CORRECT ANSWER=> When lubricating a pillow
block bearing, the user attaches the coupler into the
"Alignment of mating components - CORRECT ANSWER=> Motor shaft runout is checked to make sure
of proper __________."
"Run out - CORRECT ANSWER=> Before installing a flexible coupling you should check for
__________."
"The number of teeth of the driver gear - CORRECT ANSWER=> The mechanical advantage of a gear
drive system is the ratio of the number of teeth of the driven gear divided by __________."
"Torque and speed - CORRECT ANSWER=> The coupling provides a secure method of transmitting
__________ from one shaft to another."
"Any movement - CORRECT ANSWER=> A shaft coupling may be out of round if a dial indicator shows
__________."
"A greater number of ball - CORRECT ANSWER=> The radial load capacity of a linear bearing increases
with __________."
"Belt drive, chain drive, and gear drive - CORRECT ANSWER=> The three (3) types of shaft-to-adjacent-
shaft power transmissions are__________."
"Angular and parallel - CORRECT ANSWER=> The procedure for aligning two shafts is to check and
correct for __________and______misalignment in two planes, vertical and horizontal."
"7.5HP - CORRECT ANSWER=> The fractional horsepower (FHP) V-belt, also called a light duty belt is
designed for low power application below __________Hp."
"High, bottom - CORRECT ANSWER=> The V-belt should ride __________ in the groove with its top
near the top of the sheave; the V-belt does not touch the __________ of the sheave."
"50% greater - CORRECT ANSWER=> The maximum allowable deflection force on a belt is __________
than the minimum deflection force."
"Similar corresponding point - CORRECT ANSWER=> Pitch is defined as the distance between a point
and a __________."
"Your sense of touch - CORRECT ANSWER=> The most basic way to test the tension of a belt is to use
__________."
"Belt, driver sheave, and driven sheave. - CORRECT ANSWER=> The three (3) components for a belt
drive system are:"
"It will not slip during operation - CORRECT ANSWER=> One important characteristic of a timing belt is
that__________."
"Shaft speeds are inversely proportional to pitch diameters - CORRECT ANSWER=> In the calculation of
shaft speed and shaft torques of a belt drive system, which of the following applies?"
"0.5 - CORRECT ANSWER=> A belt drive having a 12 inch driver pulley and a 6 inch driven pulley has a
pulley ratio of__________." "The place in the belt which represents the center of the force being transmitted by
the belt - CORRECT ANSWER=> The pitch circle of a belt drive is__________."
"Distance between the points on the sheaves where the belt touches each sheave - CORRECT
ANSWER=> Belt span is defined as the __________."
"Leaf chain - CORRECT ANSWER=> Chain wrenches, forklifts, and other hoisting devices commonly use
this type of chain."
"Is more efficient - CORRECT ANSWER=> Compared to a V-belt drive, a chain drive __________."
"Heavy load and low speed applications - CORRECT ANSWER=> Because of its design, an offset chain
does not require a connecting link. For this reason, it is normally used in __________."
"1899 ft-lbs - CORRECT ANSWER=> A chain drive system has a driver sprocket with 24 teeth and a
driven sprocket with 72 teeth. If the driver shaft has 633 ft-lbs torque, the torque on the driven shaft will be __________."
"3 - CORRECT ANSWER=> The sprocket ratio for a chain drive system having a driven sprocket with 54
teeth and a driver sprocket with 18 teeth is __________."
"Relays - CORRECT ANSWER=> Devices called __________ often serve as the brains of an automated
machine."
"Solenoid-operated directional control valve - CORRECT ANSWER=> What device provides the means
by which electrical circuits control pneumatic or hydraulic systems?"
"NOR - CORRECT ANSWER=> Which of the following elements describes two or more normally closed
switches in series?"
"Relay contacts - CORRECT ANSWER=> It is standard practice in industry to carry the flow of electricity
to a solenoid through __________."
"A stop pushbutton - CORRECT ANSWER=> One method of deenergizing a seal-in circuit is to use
__________."
"Control logic - CORRECT ANSWER=> Turning outputs on or off through relay contacts is called
__________."
"A predetermined time has elapsed - CORRECT ANSWER=> An on-delay timer relay's contacts will not
change states until __________."
"event sequencing circuit - CORRECT ANSWER=> A control circuit that uses limit switches to sequence
a series of events is called a(n) __________."
“Reverse-flow check valves at torch inlets or regulator outlets - CORRECT ANSWER=> Torches are
designed to avoid mixing oxygen and acetylene by using __________."
"An oxygen cylinder valve should be opened all the way - CORRECT ANSWER=> To prevent leakage
around the valve during use, __________"
"High pressure oxygen - CORRECT ANSWER=> An explosion can occur if __________ comes in contact
with oil."
"Oxygen - CORRECT ANSWER=> A green welding hose normally indicates that this hose carries
__________."
"Dye-penetrant test - CORRECT ANSWER=> A __________ is a non-destructive test that uses a colored
spray to reveal imperfections in a weld."
"Acetylene - CORRECT ANSWER=> A red welding hose indicates that this hose carries __________."
"Pull technique - CORRECT ANSWER=> When using the __________ in welding, the electrode should
be leaned 15 to 25 degrees in the direction of travel."
"Filler - CORRECT ANSWER=> __________ metal is a metal similar in composition to the metal being
joined. It strengthens the weld by filling the gap created between the two pieces of metal during welding."
"Annealing - CORRECT ANSWER=> Metals treated by ____________ processes become soft."
"Electricity - CORRECT ANSWER=> Oxy-acetylene welding requires no ______________ and is not
sensitive to wind or drafts like Gas Metallic Arc Welding or Gas Tungsten Arc Welding."
"Cracks in the surface - CORRECT ANSWER=> A magnaflux is used to show what flaw in ferrous metal?"
"Stationary arm - CORRECT ANSWER=> A spot welding system consists of an electrical supply,
moveable arm and a(n) _____________."
"Oxygen Cylinders - CORRECT ANSWER=> What device should be stored a minimum of 20FT from
flammable materials?"
"Electricity - CORRECT ANSWER=> The gas metal arc welding (GMAW) process uses __________ to
melt metal wire and fuse it with the base metal being welded."
"AC - CORRECT ANSWER=> Circuit testers determine if __________ electricity is present."
"Contacts - CORRECT ANSWER=> A knife switch consists of a lever and one or more sets of
__________."
"Input device - CORRECT ANSWER=> The component of an electrical circuit that gives the operator
control is the _____________."
"DC - CORRECT ANSWER=> The type of current that only flows in one direction is __________."
"Loads - CORRECT ANSWER=> Constant voltage power supplies will maintain a constant voltage under
varying __________."
"A viscos meter is a device used for measuring the viscosity of an oil and is generally _______ accurate. -
CORRECT ANSWER=> 95%-99%"
"A well designed workstation places tools and equipment where they can be - CORRECT ANSWER=>
available with minimum stress"
"A workstation should be designed to minimize motions that can - CORRECT ANSWER=> cause
repetitive/ stress injuries"
"All documentation of preventive maintenance should be kept - CORRECT ANSWER=> in a designated,
safe and secure location" "An electrical diagram that arranges wires of a circuit into order rows is called a(n) _____________. -
CORRECT 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? - CORRECT ANSWER=> report the situation to the supervisor"
"Because dial indicators are fairly delicate, they should _________ during adjustment of the motor
position. - CORRECT ANSWER=> be removed"
"Before adjusting motor position during a shaft alignment always make sure to remove the
_____________. - CORRECT ANSWER=> dial indicator"
"Both analog and digital voltmeters measure - CORRECT ANSWER=> Potential difference"
"Circuit testers determine if ______ electricity is present. - CORRECT ANSWER=> AC"
"Daily maintenance involves daily records because - CORRECT 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. - CORRECT
ANSWER=> relays"
"Documentation that should be kept regarding a specific piece of equipment includes - CORRECT
ANSWER=> maintenance log"
"Feeler gauge, rulers, height gauges and dial indicators are commonly used for which task? - CORRECT
ANSWER=> alignment of industrial machines"
"For purposes of an oil analysis, one important category of information will be the - CORRECT
ANSWER=> Oil viscosity"
"Gas cylinders need to be chained securely to keep them - CORRECT ANSWER=> from falling or tipping
over"
"Heavy axial loads are better handled by ________? - CORRECT ANSWER=> angular contact bearings"
"High temperature can _____________ of a bearing. - CORRECT ANSWER=> limit life"
"Housekeeping inspections and audits should include - CORRECT ANSWER=> Unbiased auditors or
inspectors"
"How is a cam likely to be mounted on a shaft? - CORRECT ANSWER=> welded"
"How many extension cords are permitted to run across the floor of a workstation? - CORRECT
ANSWER=> 0"
"If a company does follow-up work after a PM that is considered ________maintenance. - CORRECT
ANSWER=> reactive"
"If a machine is expected to have downtime for several shifts, the appropriate communication between
shifts for Lockout/Tagout procedures is - CORRECT ANSWER=> verify energy state on machine, then
change locks"
"If a motor starts blowing fuses or tripping thermals, the most likely cause is - CORRECT 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. - CORRECT ANSWER=> replace the circuit breaker"
"If suspended metal products were found in oil analysis, it would indicate - CORRECT ANSWER=>
Bearing problems" "In a PM audit, the _____ would likely be negatively impacted if there were a large number of
uncompleted PM work orders. - CORRECT ANSWER=> critical path"
"It is important to have a/an ____________ to complete the PM work on a machine - CORRECT
ANSWER=> completion date"
"Leveling all machine components prior to coupling them _____________. - CORRECT ANSWER=>
reduces the number of needed shims"
"Low pressure in a hydraulic pump's suction line causes what malfunction? - CORRECT ANSWER=>
cavitation"
d. corrosion)"
"Smaller dirt particles are removed from the air by the filter's - CORRECT ANSWER=> element"
"The best place for an operator to find information regarding the handling of all lubricants and safety
precaution is in - CORRECT ANSWER=> SDS"
"The drive motor and equipment are protected by overload clutches when - CORRECT ANSWER=>
something jams or binds in the machinery" "The flexible or rigid protection for electrical wiring to motors is provided mainly for the prevention of -
CORRECT ANSWER=> damage"
"The following is an important key planned maintenance activity - CORRECT ANSWER=> Lubrication of
equipment"
"The most common maintenance problem with vibration on fans is caused by - CORRECT ANSWER=>
sediment and product buildup"
"The most obvious indicator that the V-belt pulleys are worn beyond usefulness is when the - CORRECT
ANSWER=> belt is touching the bottom of the groove"
"The part of electrical circuits that gives the operator control is the - CORRECT ANSWER=> input
devise"
"The primary purpose of a switch - CORRECT ANSWER=> Energize and DE energize circuits"
"The procedure for identifying machine component failure prior to major breakdown is referred to as a
_________ maintenance program. - CORRECT ANSWER=> preventive"
"The two major types of misalignment that are corrected by shaft alignment are _____________. -
CORRECT ANSWER=> angular and parallel"
"The worst enemy of hydraulic system is - CORRECT ANSWER=> contamination"
"The _______ test will show cracks in the surface of ferrous metal. - CORRECT ANSWER=> magnaflux"
"The _____________ filter, commonly used on suction or return lines, is similar in appearance to a
pressure line filter but cannot withstand the full pressure of the hydraulic system. - CORRECT
ANSWER=> cartridge type filter"
"To assure proper alignment of motors with mating equipment, the first step is to - CORRECT
ANSWER=> check shaft runout"
"To check sheave wear, - CORRECT ANSWER=> measure each groove angle"
"To convert gauge pressure to absolute pressure___________ - CORRECT ANSWER=> add atmospheric
pressure to the gauge pressure"
"To maintain equipment, technicians should _____________. - CORRECT ANSWER=> Perform daily
equipment checks"
"To which standard must preventative maintenance be performed? - CORRECT ANSWER=> equal to its
original or properly altered condition"
"Trouble that keeps recurring at regular intervals on the same detail should result in - CORRECT
ANSWER=> A thorough check for history of similar problem"
"Turning outputs on or off through relay contacts is called _____________. - CORRECT ANSWER=>
control logic"
"What does the PDCA Cycle stand for? - CORRECT ANSWER=> Plan-Do-Check-Act"
"What is the Goal of Total Productive Maintenance (TPM)? - CORRECT ANSWER=> zero breakdowns
and defects"
"What should be done first when an employee witnesses a pool of oil under a machine? - CORRECT
ANSWER=> spread oil dry or sand on the oil spot"
"When a Maintenance Technician completes a scheduled PM work order the will also verify that -
CORRECT ANSWER=> the operator of the equipment is satisfied"
"When current in a circuit is too high, it is usually the result of to many loads or a _____________. -
CORRECT ANSWER=> short circuit"
"When finished with an oil rag, it should be disposed of - CORRECT ANSWER=> in an appropriate
fireproof container" "When inspecting for out of round shaft, any movement when rotating the shaft of the Dial Indicator
show that the - CORRECT ANSWER=> The shaft may be out of round"
"When lubricating a bearing, the worst mistake to make would be - CORRECT ANSWER=> get dirt into
the bearing" "When time-delay relays are used for sequencing, they basically take the place of which type of device -
CORRECT ANSWER=> stop pushbuttons"
