Maintenance Awareness Practice Test

These questions are part of the practice quiz. Start practicing

• Turning outputs on or off through relay contacts is called __________.
• During welding, exposure to ultraviolet light can lead to which condition?
• Which organization approves standards for pressure vessels in the United States?
• A mechanical power transmission system receives power from the __________.
• What kind of fitting is used with hoses that require frequent connection and disconnection?
• What type of switch is not manually operated?
• If you think you've received a pinhole leak injury, what should you do?
• What is pressure?
• What should you do before performing maintenance on any hydraulic system?
• Potential energy becomes __________ when allowed to move.
• What serves as a common reference point for point voltage measurements in a circuit?
• Which device controls the flow of hydraulic fluid in a system?
• Current is more dangerous to measure than voltage. Is this statement true or false?
• An example of a manually-operated single cycle reciprocation circuit is a __________.
• What is the purpose of a pressure relief valve in a fluid power system?
• Which type of logic element uses a control relay?
• In some applications, what is necessary to install a chain?
• What is the primary function of an ammeter in a circuit?
• In hydraulic systems, what does the term 'hydraulic fluid' usually refer to?
• Which logic element describes a circuit with two normally open input switches in series?
• Which component is NOT normally part of a safety interlock system?
• Which condition does NOT indicate a potential sprocket misalignment?
• Oxyacetylene welding __________.
• A flexible coupling is preferred in applications requiring?
• What term describes the component that regulates airflow in a pneumatic system?
• A pushbutton switch with a return spring is called a(n) __________ switch.
• Which of the following shows the connections for power devices?
• Current is measured in which unit?
• In a ladder diagram, what is typically represented by horizontal lines?
• Which valve can create a 2/2 way function by plugging ports?
• Before performing system maintenance, should all valves be worked in all positions?
• A soft foot condition on a motor mount should be corrected by __________.
• What happens to the pressure in an accumulator when the pump stops?
• What is the best way to check for a pinhole leak?
• Couplings are categorized as rigid or flexible. What determines the categories?
• The flange coupling is classified as which type of mechanical coupling?
• An ammeter is used to measure __________.
• A pneumatic system uses a(n) __________ to provide power.
• Which component is responsible for increasing hydraulic pressure in a system?
• A common material used in machine shafts is __________.
• The unit of measurement for voltage is called what?
• If a wire has continuity, it __________.
• What pneumatic component provides straight line motion?
• An industrial machine foundation usually consists of __________.
• When current is applied, a solenoid moves in which type of motion?
• Which of the following is not a component of a limit switch?
• What type of current is more efficient to transport over long distances?
• Why should filters be used on all pneumatic systems?
• Pitch is defined as the distance between what?
• Which of the following is not a component of a ladder diagram?
• Which type of switch would be critical for ensuring machine safety by preventing operation without a guard?
• Which device is used to measure voltage?
• Check valves are used in hydraulics to __________.
• An independent speed control circuit may be needed with a double-acting cylinder because __________.
• The two major categories of bearings used in industry are?
• The coupling provides a secure method of transmitting which of the following from one shaft to another?
• Belt span is defined as the __________.
• What is a significant characteristic of a timing belt?
• Which of the following is a true statement about DCV schematics?
• The most common fastener used to attach a motor to a bedplate is a hex head bolt with __________.
• When measuring voltage across a component, which tool is appropriate?
• Which of the following components converts electrical energy into mechanical energy?
• Which component in a hydraulic system stores energy in the form of pressurized gas?
• What device is used before a motor that allows electricity to flow to the motor?
• On which part of a hydraulic cylinder does the fluid exert its power?
• Without bearings to hold a shaft in place, what would loads cause?
• OR logic is formed by __________.
• As the sprocket ratio (SR) increases, what happens to the torque on the driven shaft?
• Devices called __________ often serve as the brains of an automated machine.
• Pneumatic quick connect female fittings contain which component to prevent air from leaking when disconnected?
• What must be added to a single-cycle reciprocation control circuit to make it repeat its cycle continuously?
• Can the accumulator hold pressure to operating levels even when the pump isn't running?
• Some rules for safe dress to wear around machinery when it is running are __________.
• Safety goggles provide protection from which of the following?
• When should you check for correct fluid levels?
• What type of measurement device is an ammeter used for?
• The purpose of using eye protection during welding includes which of the following?
• Ohm's Law for calculating voltage is __________.
• What should you do when a high-pressure hose fails and begins leaking?
• When measuring chain sag, which side needs to be taut?
• An electromechanical relay includes which of these components?
• Which of the following describes the flow of electrical charge in a conductor?
• What is common between ball bearings and solid bearings?
• Tennis shoes will adequately protect the feet from hot sparks.
• Which type of flowmeter must be oriented in a vertical position?
• The function of a machine shaft is to __________.
• What component of a relay positions the contacts into their normal state when the solenoid is de-energized?
• Listening for unusual sounds from the system pump and reporting them is a good practice. Is this statement TRUE or FALSE?
• The shaft run-out in a V-belt drive system should be no more than __________.
• The force on a spring can be calculated using __________.
• What logic gate produces an output that is true only if at least one input is false?
• What is pressure?
• Which term defines the total operating current of a circuit?
• Smaller dirt particles are removed from the air by which part of the filter?
• What type of problem are you looking for when checking the oil cooler and the heat exchanger?
• Gas Tungsten Arc Welding __________.
• No matter how careful you are, will normal operations admit some contaminants into the Hydraulic system?
• What type of control circuit is typically used for tasks that require sequential operation?
• What is a necessary feature of all welding helmets?
• A(n) __________ provides power to a hydraulic system by pumping oil from a reservoir into the supply lines.
• What is another name for ball bearings?
• Spot Welding __________.
• What is the most common type of chain used for mechanical drive applications?
• What can mechanical power transmission systems change beyond torque and speed?
• In a chain drive system, what happens to the speed of the driven shaft as the sprocket ratio (SR) increases?
• Which type of circuit breaker trips immediately when needed under all circumstances?
• The purpose for having a clutch connecting two shafts together is to __________.
• What type of symbols are utilized to design and analyze hydraulic circuits?
• What are the misalignment types checked during the procedure for aligning two shafts?
• In electrical terms, what does resistance measure?
• An example of memory logic by a control relay is __________.
• Which logic element typically produces an output of 0 when both inputs are 1?
• Which of the following best describes a parallel circuit?
• What type of load is axial force categorized under?
• A V-belt should ride __________ in the groove with its top near the top of the sheave, and does not touch the __________ of the sheave.
• Hydraulic workholding leads to better productivity and accuracy when compared to manual workholding. Is this statement TRUE or FALSE?
• Which of the following actions can mechanical power transmission systems perform?
• What must you do before storing an open fluid container?
• What is typically the primary purpose of maintenance in hydraulic systems?
• Which is not an application of Ohm's Law?
• The two major types of misalignment corrected by shaft alignment are what?
• Most contaminants enter the hydraulic system through which component?
• The gas metal arc welding (GMAW) process uses __________ to melt metal wire and fuse it with the base metal being welded.
• To find the total resistance in a series circuit, __________.
• __________ may remove a lockout on the power source of a piece of mechanical equipment.
• A(n) __________ is used to measure resistance.
• Welding screens help to protect bystanders from which risk?
• One revolution per second is equal to __________.
• The maximum allowable deflection force on a belt is __________ than the minimum deflection force.
• Which of the following circuits allows for the automatic restart of a machine after a stop command?
• Where is chain sag typically measured?
• Can double-acting cylinders apply force in both directions?
• Which component is typically used to convert rotational motion into linear motion in pneumatic systems?
• 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 __________.
• A used belt requires __________ belt deflection force than a new belt.
• Which term describes the rate of flow of electrons?
• Both major categories of shaft bearings can be mounted in which of the following ways?
• The three basic components of a chain drive are __________.
• Which of the following is not a pneumatic safety rule?
• If AC power cycles back and forth 50 times per second, what is its frequency?
• A stop pushbutton is basically just a __________.
• Which of the following is a formula for calculating total resistance in a parallel circuit?
• Which material is commonly used for protective welding gloves?
• When changing abrasives on an angle grinder, what is recommended?
• What term describes the amount of fluid being moved from the pump in a hydraulic system?
• In die forging, the workpiece is shaped with repeated blows from a powered hammer. Is this statement TRUE or FALSE?
• Weight is measured in pound-force (lbf) or newtons (N). Weight is the __________ an object is pulled by gravity.
• The device most often used to orient a surface so it is either parallel or perpendicular to the ground is a __________.
• Mass is the amount of __________ the object contains.
• Which component is responsible for converting electrical energy into mechanical energy?
• What must be done with the power supply before measuring resistance?
• Pascal's Law explains how __________.
• What is the typical arrangement of bearings in high-speed applications?
• Single-acting cylinders apply force in how many directions?
• Leaks in a fluid power system can cause two issues. The first is premature failure of the power sources due to overloading. What is the second issue?
• A motor control circuit commonly applies what type of logic element?
• One horsepower equals __________ foot-pounds per second.
• What is defined as the amount of force exerted to move electrons?
• Which machine is used to cut metal alloy sheets using highly accurate dies and punches?
• What type of diagram uses symbols to represent electrical devices and how they are connected?
• What is the main purpose of bearings?
• What is a characteristic of a check valve?
• Force is any attempt to change the motion of an object and is measured in __________.
• What is the primary purpose of a limit switch?
• A meter-in flow control valve controls the speed of an actuator by __________.
• A pump produces __________.
• The sprocket ratio for a chain drive system having a driven sprocket with 54 teeth and a driver sprocket with 18 teeth is __________.
• What is the reading on the pressure gauge that indicates the correct value?
• Which schematic symbol depicts energy conversion devices, such as an air motor, in a pneumatic schematic?
• The schematic symbol for a basic hydraulic component __________.
• When troubleshooting a pneumatic system, what is a common first step?
• What function does the filter serve in a hydraulic system?
• Higher holding power and rigidity, faster cutting tool changes, and greater accuracy are the advantages of __________.
• What distinguishes a circuit breaker from a fuse?
• Which of the following is a rule for drawing a ladder diagram?
• Which of the following describes a benefit of hydraulic machines over mechanical machines?
• Increasing force in a Hydraulic system causes __________.
• A spirit level can be used __________.
• Which element describes two or more normally closed input switches in series?
• What could happen if impurities are not removed from the hydraulic fluid?
• Which of the following is NOT an important step of regular maintenance?
• Output devices transfer electrical energy to what other kind of energy?
• NOT logic is formed by __________.
• What type of hydraulic system can often lead to an increase in safety within machines?
• The advantage of the flexible jaw coupling is?
• The pulley ratio is defined as the ratio of what?
• The three types of shaft-to-adjacent-shaft power transmission are __________.
• A bedplate is a solid piece of metal usually made of __________.
• Which of the following is not a component of a basic electrical circuit?
• A meter-out flow control circuit __________.
• A flow control valve is a combination of a __________.
• The diameter of the accuracy stock shaft is always which of the following in relation to the nominal diameter, due to its precision grinding?
• Which of the following statements describes a limit switch?
• What type of switch is operated by humans to control power flow to outputs?
• What type of drawing is a ladder diagram?
• In which component of an electrical circuit can voltage drop occur?
• Which component routes fluid to selected locations in the hydraulic circuit?
• What is the primary purpose of a hydraulic actuator?
• The pressure created by any force is calculated by multiplying the total force by the total area. Is this statement TRUE or FALSE?
• What is the role of the insulator in a circuit?
• What type of relay is typically used for controlling larger loads?
• What represents the place in the belt which indicates the center of the force being transmitted?
• A __________ bolt size should be selected to fit through a 1/2-inch hole in the foot of a motor mount.
• All electric motors require how many bearings mounted in what manner to the motor?
• What type of equipment should be tested for proper functionality before welding?
• What assembly moves inside the barrel-shaped body of a cylinder?
• Which parallel shaft power transmission provides distance from the two shafts and the most torque?
• The rate machines perform work is defined as __________.
• Which type of valve restricts flow in both directions?
• According to Kirchhoff's Voltage Law, the total voltage in a series circuit is equal to the what?
• When using a chain puller, the jaws are opened and closed by __________.
• An angle grinder primarily operates how?
• Which of the following is NOT a cause of pressure problems?
• Is following a maintenance program the most effective way to prolong system life?
• To measure motor RPM, the rubber-tipped shaft on a handheld tachometer must be held against the __________.
• Which of the following statements does not accurately describe part of the resistance measurement process?
• Which formula correctly calculates power?
• In a series circuit, how does adding more resistors affect total resistance?
• Standoffs __________ the shaft and bearing assembly to the motor shaft.
• C-Clamps pose what difficulty in welding?
• Which type of drive provides a directional change of the rotary motion in parallel shaft power transmission?
• Resistance is measured in units of __________.
• Always report any problems you find to whom?
• What are the control devices used in pneumatics called?
• A power diagram is needed with a ladder diagram to __________.
• Which of the following statements is not true of a ladder diagram?
• Flow rate is equal to volume divided by __________.
• The grade of a bolt can be determined by __________.
• What happens to current when resistance in a circuit increases while voltage remains constant?
• Industry commonly uses quick connect fittings when?
• What method is used to determine the initial state of each output in the ladder diagram?
• Limit switches are included on the power diagram. Is this statement true or false?
• A regulator is used in pneumatics to perform which of the following functions?
• Moving an object from one point to another is called __________.
• A Fractional Horsepower (FHP) V-Belt is typically used for what type of operation?
• The 3-position, 5-way DCV is held in the middle-position by the __________.
• The main function of a needle valve is to __________.
• This is used on a pneumatic schematic to show that branch lines split off the main line.
• What is a common type of circuit protection device?
• Which valve configuration typically directs flow to different outputs in a hydraulic system?
• Which of the following is an element of control logic?
• In the power law, which expression can replace the variable E?
• Which component usually provides the force needed to operate other elements in the hydraulic circuit?
• The weight of an object is determined by __________.
• The flow of electricity to a solenoid is carried through __________ to protect other devices.
• What term describes a fuse that has melted?
• What device provides the means by which electrical circuits control pneumatic or hydraulic systems?
• What is the term for the potential difference between two points in a circuit?
• Force can be measured in __________.
• As the pulley ratio increases in a belt drive system, what happens to shaft speed and torque on the driven pulley?
• In a control system, what does a 'manually-operated circuit' typically require?
• Which method provides the ability to connect and disconnect while a shaft is running?
• Which type of fitting connects two branch circuits to a single supply line?
• What component of the hydraulic system actually performs the work?
• What pneumatic component provides straight line motion?
• How does a chain drive compare to a V-belt drive in terms of efficiency?
• Multiple strand chains are primarily used for which purpose?
• Which unit is preferred for measuring power?
• What display might appear when there is no continuity found when testing with a DMM?
• What fluid is most commonly used in pneumatics?
• What is the purpose of the pressure relief valve in a hydraulic circuit?
• Shielded Metal Arc welding uses __________ to protect the weld area from contaminants.
• What is one thing you should NOT do during operation of a hydraulic system?
• What devices are wired to the relay circuit and are turned on in sequence to create the steps of operation?
• In mechanical systems, the purpose of a bearing is primarily to?
• If a high-pressure hose breaks, what is true about its behavior?
• In which type of circuit is there only one path for the current to flow?
• A control circuit that uses limit switches to sequence a series of events is called a(n) __________.
• Which factor is NOT a consideration when checking hoses and lines?
• Regarding the use of degreasers for cleaning metal before welding, which statement is true?
• How long should you wait for the hydraulic system to cool down after operation?
• For a machine with multiple safety requirements, which circuit type would be most suitable?
• Air supplied to a pneumatic system is supplied through the __________ line.
• A chain should be replaced when its length becomes what percentage longer than its original length?
• Which of the following is not a component of a relay?
• In a chain drive system, the speed and torque of the driven shaft are determined by the __________.
• What is the hydraulic tool holder classified as?
• A control circuit must be designed to ensure what primary aspect for operators?
• How does the viscosity of oil benefit hydraulic systems compared to water?
• A limit switch used to sense if the guard is in place on a machine is called a(n) __________.
• Which component allows an accumulator to charge and maintain its pressure?
• You do NOT need to inspect hoses and lines for damage. Is this statement TRUE or FALSE?
• Which method provides the ability to connect at an angle to the driving shaft?
• When dexterity is of extreme importance, what type of gloves should be worn?
• Which type of machine operates by pushing or pulling a toothed tool through a workpiece?
• Which component is essential for defining a complete circuit?
• Fully automated machines require a __________.
• When the operator squeezes the trigger on a GMAW welding gun __________.
• What does the hydraulic system draw from the reservoir?
• What type of electrical circuit provides a path for current to flow between the positive and negative terminals of a power supply?
• What is the rate at which electricity is converted into another usable form like heat called?
• A smaller weight on a lever can raise a larger weight, but the smaller weight must move a greater distance. Is this statement TRUE or FALSE?
• DCV stands for __________.
• What type of device is the relay's solenoid coil in the control logic?
• Which device in pneumatic systems is used to decrease pressure to desired levels?
• Why is it necessary to rotate the coupling hubs before taking each measurement?
• Is safety the most important concern when working in any type of manufacturing?
• Hydraulic fluid exerts pressure on the __________.
• One method of deenergizing a seal-in circuit is to use __________.
• A __________ bearing is a housing with mounting feet that allows it to be mounted to a surface perpendicular to the shaft.
• The adjustable motor mount is used __________.
• Which is the most basic type of limit switch?
• What should not be done after using an angle grinder?
• Which of the following is not shown in a hydraulic schematic?
• Light from arc welding can cause severe burns to the eyes or blindness.
• What is the principle behind the operation of a hydraulic system?
• Which of the following is a characteristic of welding?
• In addition to dress rules, another rule to follow with machinery is __________.
• What are the three basic components of a belt drive system?
• A machine foundation should be designed to support the load of the machine, maintain the alignment between coupled components, and __________.
• The poppet of a pressure regulator is opened by which type of pressure?
• What is the schematic symbol for a flow line in a hydraulic system?
• Which of the following is a function of a safety interlock switch?
• Pascal's Law states that any change in pressure in an enclosed fluid is applied equally to all the fluid in the enclosure. Is this statement TRUE or FALSE?
• Which of the following is an application of a relay?
• Is it true that hydraulic systems utilize oil instead of water due to its self-lubricating properties?
• What is the consequence of not using a proper welding helmet?
• What innovation allowed hydraulic technology to explode and be used in practical ways for the first time?
• A chain puller is a tool used to hold two ends of a chain together while the __________.
• What type of switch uses a rotary motion to open and close contacts?
• What type of valve has two ports and allows fluid flow in both directions?
• A multimeter can measure which of the following?
• When evaluating a system's performance, which component is critical for ensuring smooth operations?
• Which logic element describes two or more normally closed input switches in parallel?
• Chrome-plated steel shafts should be used for which of the following reasons?
• What indicates leaks on cylinders and valves?
• To read and interpret a basic hydraulic schematic, the user should __________.
• One ton-force is equal to __________ pound-force.