CDC Power Pro Practice Test

These questions are part of the practice quiz. Start practicing

• The purpose of the tape deflector sheaves in a permanent install is to:
• Operating the BPU in temperatures above 125° F may require the installation of what to prevent solar heat buildup?
• When the pressure in the cooling system exceeds the maximum value, what does the radiator cap do?
• Which of the following is NOT an option for data logging in InPower BPU?
• If water or sediment is found in the BEAR Power Unit primary fuel water separators during inspection, what should personnel do?
• What item is critical to inspect for tape stack height in a MAAS setup?
• Why is the BAK-15 considered an emergency barrier and only installed in the overrun?
• Which statement accurately compares SSSs to temper tents?
• When is the transmission loop tension checked?
• When should the trough assemblies, hand hole, and pull box be inspected?
• When using a multi-conductor cable assembly, what must you ensure?
• Why should the center line of the lightweight fairlead beam sheaves project at least 1 foot above the runway?
• What material is commonly used in the construction of textile brake systems?
• What primarily regulates the fuel/air mixture during combustion in an engine?
• In a monthly inspection, which component is specifically inspected for leaks?
• What is the primary purpose of a gasket in an engine?
• What type of tents become obsolete as more permanent facilities are built?
• How is the position of the trailer determined during the soil uni-directional installation of the MASS?
• How many brake modules are used for each stage when configured for uni-directional?
• What maintenance is essential for ensuring the textile brake system functions correctly?
• What supplies fresh air to the air box in a two-stroke diesel engine?
• Supplemental coolant additives protect metal surfaces of the cooling system against what?
• When planning for emergency use of MASS, what should be ensured?
• What type of transformer uses two inductors?
• What could happen if phase identification is not done correctly?
• What is the maximum acceptable ground slope for installation when selecting a site for the BPU?
• During installation planning for the MASS the site should permit usable portion of the runway in the events of a(n)?
• During a monthly MRES inspection, what should the brake lines and fittings be checked for?
• Which component of the starting system uses low amperage to operate a high amperage component?
• What is the maximum distance of cable runs for BEAR base 60 amp secondary cable assemblies if no other alternative exists?
• What feature is enhanced by the installation of setback kits on a runway?
• During site planning for the MAAS what dictates site location?
• Which type of sensor is critical for monitoring exhaust gas in SCR systems?
• What should personnel wear when performing tasks on medium voltage power distribution components?
• What indicates proper functioning of the support blocks?
• What size pendant cable can the Type-H cable support system be adapted to use?
• For a system to be considered grounded, it must have what requirement?
• Which of these tasks will be accomplished during a daily inspection?
• What component can cause engine stalling if it malfunctions during a cold start?
• If coolant comes into direct contact with the cylinder liner, then what type of liner is used?
• Which protective device provides a time delay and must be replaced when actuated?
• What must 3E0X1 personnel assemble and install onsite before connecting equipment?
• What degree must be maintained when installing earth anchor stakes for a unidirectional installation?
• What occurs if current rises above the amperage rating on a fuse link?
• During an annual/8800 hour inspection of the BPU, what should be inspected for loose parts or connections?
• Why should primary distribution cables be kept short at a bare base?
• If cooling air passes over intake air, this is known as what type of aftercooler?
• After an arrestment, what must the tape be inspected for?
• What is the #1 criteria for selecting cables?
• What component engages the pinion gear in a starting system?
• What is required when a BAK-12 reaches its 10 year mark?
• The centrifugal water pump draws coolant into the center of the impeller and then what occurs?
• Why are electrical systems and equipment grounded?
• During a daily MRES inspection, the front and rear sheave weldments are checked for?
• Electrical systems are grounded to prevent surges due to which of the following?
• What is the main purpose of the Digital Control System in relation to the BEAR Power Unit?
• What is the acceptable California Bearing Ratio for installing the lightweight fairlead beam?
• Specific gravity in a battery is influenced by which two factors?
• What will happen if the generator's voltage is incompatible with the electrical service?
• What type of periodic inspection is performed when the MRES is in storage?
• What can cause a decrease in performance due to fuel quality?
• Which of these does NOT provide a form of fuel filtration?
• What should be referenced when grounding power plant units?
• What is the consequence of burrs and sharp edges found during a daily MRES inspection?
• What is the requirement for the environment when installing a Primary Switching Center?
• What is the main purpose of a battery in electrical systems?
• What does an electronic governor use to adjust engine operations automatically?
• If the installation of the BAK-12 is going to last over a year then:
• What does an increase in the voltage of a stator output indicate?
• What is one of the reasons for the installation of a BAK-14?
• Why should power plants have interconnection capability?
• What characteristic describes an 800 series MEP unit?
• Which system is responsible for charging the battery in a vehicle?
• What capability does the battery have in terms of energy conversion?
• What is the purpose of properly spacing BPUs during installation?
• Which alternator component helps to maintain stable voltage during load changes?
• For what purpose does the test strap assembly get removed periodically?
• When should the guide rods be lubricated?
• During a daily inspection, what would a technician check for?
• What benefit do temper tents provide compared to traditional tents?
• What condition may cause a generator to wet stack?
• How many degrees apart are the phase windings positioned in a three-phase alternator?
• What effect does burying the arresting chain have on the performance of the E-5 barrier?
• Conventional antifreezes use what type of additives to achieve corrosion and scale protection?
• What is the purpose of the additive within the coolant filters?
• Seals are comprised of what?
• What type of code allows the generator to continue to operate, giving operators time to correct issues?
• What assembly is checked for centerline, elevation and alignment during a daily inspection?
• What controls all functions of the BPU's electrical generator through the Automatic Voltage Regulator logic?
• What is the main goal of selecting a flat installation site for the lightweight fairly beam?
• Why is it necessary for the braking assembly to be separated from the tensioning assembly during operations?
• Who is authorized to disconnect power plant output cables?
• When can additional shots or weight be added to the standard configuration of an E-5 barrier?
• Which issue is likely to arise from a thermostat stuck open?
• In the event of a brake failure, what is the immediate pilot protocol?
• Which of the following is NOT part of the Type-H's monthly inspection?
• Which scenario could result in engine "knock"?
• What happens if the aircraft exceeds the capacity of stage 1 of a textile brake system?
• During the 4000 hour inspection, why is the BEAR Power Unit's battery-charging alternator belt replaced?
• What indicates an external leak when checking hydraulic fluid during a monthly inspection?
• What is the purpose of the oil cooler?
• What is needed to operate BEAR Power Units from a remote location?
• When is an initial calibration file supposed to be installed on a DCS using InPower BPU?
• What are PLCs replacing?
• What is the primary reason for selecting a flat and extended installation site for the lightweight fairly beam?
• When multiple conductors of the same insulation color go through conduit, what is necessary?
• Which system component is crucial for filtering impurities from fuel before it reaches the engine?
• What is the primary function of the textile brake system in aircraft?
• What allows for a safer work environment at the Primary Switching Center?
• Why is it important to consider tape stack height when selecting a site for the MRES?
• What happens when the shuttle valve is placed in the ON position?
• What bonding method is used to connect components separated by distance?
• What is the purpose of a four-stroke diesel engine?
• At what inspection interval should the air filter and silencer be cleaned?
• What is the function of the intake valves?
• When would a fuel transfer pump be used?
• What happens to air velocity when it passes over the fins of air cooled engines?
• Which of the following functions of an electronic governing system comes after sensing?
• In the event of an accidental vehicle separation, what MASS component activates the hydraulic braking system?
• What is a notable advantage of small shelter systems over temper tents?
• What is the potential issue of an incorrectly set cam during inspection of the MASS?
• When would depot maintenance personnel complete an overhaul of the BEAR Power Unit?
• How many support blocks are in the standard configuration of the Type-H?
• In order for the engine control unit to understand a sensor signal, it must first be converted into what?
• Which grounding method radiates wires horizontally from a central point?
• Which factor must be considered to prevent environmental damage during BEAR operations?
• When performing a daily inspection, what must be completed?
• What is a reason to utilize multiple pendant cables in a MAAS setup?
• What is the purpose of an oil filter?
• During the monthly inspection of the MASS, why are sheaves inspected for freedom of rotation?
• What function of the fuel system breaks up the fuel into smaller particles?
• What type of corrosion is known to be the most common and destructive when two different types of metal contact each other with moisture present?
• How is power supplied to single unit PLCs?
• What could the consequences of carelessness and accidental contact during maintenance be?
• What is the primary reason for the use of static grounds?
• After applying a method for phase identification, what should be done?
• Which of the following does not need to be known to complete a load survey?
• What requirement might EPA standards enforce on engines?
• Prior to connecting three-phase cables, what must the phase cables be?
• Which component helps maintain oil flow and lubrication in an engine?
• Which alternator connection has three phase leads and a neutral?
• Which component stabilizes oil pressure at all speeds?
• What might be an indicator of an oil leak in an engine?
• What type of forces do textile brake systems primarily counteract during landing?
• If the cylinder head forms the top of the combustion chamber, then what component forms the bottom of the combustion chamber?
• In an expeditionary install, the energy absorber and fairlead beam are anchored to a:
• To supply power to the low-voltage outputs of the Secondary Distribution Center, what must happen first?
• What is the minimum required touchdown space for on runway installation?
• What is the purpose of the Type-H's energy absorber during operation?
• What is the primary role of a centrifugal air cleaner?
• What effect does the cam control have on the brake during an aircraft arrestment?
• What was invented to ease the transition for technicians programming PLCs, while they replaced mechanical relay logic systems?
• What common issue could cause a high temperature in a coolant system?
• How often should the wheel bearings on the MRES be lubricated?
• If the plan is to install the MASS on prepared foundation that it must meet the standard of which organization?
• Why is the Type-H configured with an energy absorber?
• What is a common reason for using fuses in a circuit?
• What is the primary benefit of using an oil cooler in an engine?
• If a circuit has a higher amperage or voltage rating, what type of fuse will be used?
• Why should care be taken around pressurized hydraulic systems or cables under tension?
• If hydraulic pressure increases inside the shuttle valve, which of the following will occur?
• Which is an optional runway spacing configuration for the Type-H?
• Which type of battery is characterized by fine, highly porous, micro-fiber glass separators?
• If loads are not balanced between phases, what is the effect on the generator?
• How many complete revolutions of the crankshaft are required for a two-stroke engine?
• Why must the distance between the fuel bladders and the BPU not exceed 100 feet?
• What maintenance action is required when the Type-H reaches 10 years in service?
• During site selection, the slope of the ground should not exceed which percentage between the MASS and the MRES?
• When is static ground primarily utilized?
• When operating the BPU in a humid environment, what is necessary to prevent contamination build within the fuel tank?
• Which bonding method utilizes rigid plates to connect two or more components of an electrical system?
• What is typically used as the electrolyte solution in a lead-acid battery?
• When does the BEAR Power Unit utilize the pre-lubrication pump?
• Why is SSS considered better than Temper Tent?
• What additional equipment is provided by the XFAPH High Power Unit Type code according to the BEAR Order of Battle concept?
• Which color on the annunciator illuminates to display a warning for the Digital Control System on the BEAR Power Unit?
• What is the end product if DEF is used in conjunction with an SCR Catalyst in a diesel exhaust system?
• Which of the following is NOT a reason for bonding equipment?
• What type of silencer is effective at mitigating low to mid frequency noise only?
• When bonding electrical system components, which of the following methods is most appropriate?
• When operating the BPU in temperatures below -25° F, the Digital Control System uses what to heat the coolant for proper engine startup?
• If left untreated, cavitation can cause what in a cooling system?
• When the BPU fuel looks cloudy during cold temperature operations, what point has the fuel reached?
• What is one potential cause of air being present in the fuel lines?
• In a bidirectional installation on concrete, what action is necessary regarding the tires?
• What prerequisites must be fulfilled to use InPower BPU on a standard personal computer?
• During which phase of flight is the textile brake system most crucial?
• What is the first step in viewing inactive or intermittent faults using the InPower BPU service tool?
• Which feature of InPower is primarily used for data management?
• A mechanical fuel pump is actuated by what component?
• Why can the ground slope not exceed 8% when installing the lightweight fairlead beam?
• In order for the facility load to operate properly, the generator and transfer switch must do what?
• In what configuration of the BAK-14 would 20 support boxes be installed?
• What aspect of a textile brake system directly affects its responsiveness?
• What component rotates to provide AC voltage to the rectifier components?
• Which component gets installed when tail hook equipped aircraft utilize the airfield?
• What function does the ECU perform to maintain engine speed under varying loads?
• What component will be used to aid in a cold engine start?
• Which grounding principle is defined as protecting personnel from shock, electrocution, fire, and explosion hazards?
• How many 25 kW Power Distribution Panels can be connected to a 60 kW Power Distribution Panel?
• Why is it necessary to calculate total diversified load?
• What are the hydraulic components of the stanchion inspected for during a monthly inspection?
• What device prevents power from being supplied to both the primary and alternate power source on an SDC?
• What could cause the carburetor to run too lean?
• What is a potential consequence of running an engine with a faulty radiator cap?
• When do the compression springs push on the toggle links?
• Which condition is NOT a typical function of a potential transformer?
• What purpose does the centerline of the runway sheaves serve by projecting above the surface of the runway?
• Why does a MAAS set come with a 90 foot and 153 foot pendant cable?
• Why is a piece of equipment equipped with a thermal-magnetic circuit breaker?
• In operational terms, what does the Fault Log record?
• What is the primary reason for using pretensioning springs on the E-5 barrier?
• What type of valves are located in the overhead valve train of a two-stroke diesel engine?
• When does the intake event begin on a two-stroke diesel engine?
• During site planning for the MASS, if the soil falls below a 7 CBR value, what else is planned?
• What code requires an action to reset the fault?
• Which fuel injection system is designed for applications with relatively broad speed requirements?
• What allows the use of wide bodied aircraft on runways with a MAAS installed?
• During a weekly inspection, what should the tape connector be inspected for?
• Which operating mode of a generator employs an electronic governor?
• Where can the Remote Operating Panel for the BEAR Power Unit be found?
• If the power factor meter indicates to the left, how is the load described?
• Which component is essential for connecting the InPower BPU to a computer?
• In a high threat location, what is required for the electrical system?
• In order to supply a utility with a certain amount of power, the ECU must be set to what?
• What hosts the PLC logic, memory, and communications?
• What is the purpose of Shutdown, Fault, and Warning Codes?
• How long can the onboard fuel system sustain engine operation if the BPU is fully loaded?
• How often is the hydraulic fluid checked in the Type-H?
• Under what circumstances should gasket sealant be used?
• The Textile Brake arresting system uses a ______ inch pendant cable.
• Which mechanical removal type uses abrasive paper to remove light corrosion not deeply pitted into metal?
• What component moves oil from the oil pan and delivers it throughout the engine?
• The MPU, crank positioning sensor, and cam positioning sensor all primarily perform what function?
• After BPU engine startup, which component supplies power to the DC system?
• Why are electronic governors used instead of mechanical ones?
• Which MAAS uni-directional installation requires the removal of a tire?
• The use of a 66 inch purchase tape storage wheel on the MASS allows for what capability?
• What is one of the main advantages of using a textile brake system?
• When using the American Wire Gauge system for cable selection, what does a higher gauge number indicate?
• What must be done if corrosion is discovered during a daily inspection of the BPU's battery and connections?
• Which MEP unit utilizes full control authority for fuel governing?
• Aluminum cables are generally selected for use in which applications?
• What hydraulic component is essential for maintaining braking functionality in MASS?
• Why is the E-5 barrier primarily used in the overrun?
• Which of the following factors can lead to a loss of coolant?
• Which type of fuel liners are standard wire-braided hose with an inner lining?
• Which factor primarily affects the efficiency of a textile brake system?
• What is the recommended height of a sunshade over a BPU?
• Why do you verify the SAFE/ARM switch is in the ARM position during a daily inspection?
• What could happen if tape stack height is not considered during site selection for the MRES?
• What type of breaker can handle larger overloads?
• Which function of InPower is capable of energizing a specific electrical component safely?
• What is a critical inspection focus for the MRES's brake lines?
• Which electrical scheduled inspection requires the BPU chassis ground connection checked for security and resistance value?
• Why must the transfer switch have a switched neutral?
• What is checked on the drive chains during the daily inspection?
• What purpose does the support box heater element serve on the BAK-14?
• If the voltage output goes to zero, what will the volt meter read?
• What is used to determine if the correct amount of coolant additives exist within the cooling system?
• Which scenario could lead to a malfunction in the textile brake system?
• When determining the configuration of the BAK-12, which of the following is taken into consideration?
• How often should the tape undergo cropping during preventative maintenance on the MASS?
• Which of the following is the proper configuration for tail hook equipped aircraft?
• What should be done to prevent cross threading?
• If hydraulic system pressure exceeds the safe maximum valve during an arrestment, what will occur?
• Which of the following is considered the best example of an equipment ground?
• Which of the following is a major advantage of a diesel engine over gaseous engines?
• What characteristics describe the legacy MEP units?
• What is the life expectancy of the BPU when stored outside?
• If a gasoline engine lubricating system is showing low oil pressure, which option is NOT a likely cause?
• Which of the following is a characteristic of a textile brake system?
• What feature allows for the connection of an external DC power supply if the onboard batteries fail?
• If the engine oil used in the BEAR Power unit is 15W-40, when would it be drained and refilled during scheduled inspection?
• What air cleaner has air travel through two filters before entering the intake piping?
• What happens to the stator's output voltage if the Automatic Voltage Regulator computes a positive error signal?
• Why must the BPU's load ground connection, output terminals and parking stands be inspected daily?
• What action does the Digital Control System take when the maximum number of log entries is reached on the BEAR Power Unit?
• What is the purpose of the three-point elastomer isolation configuration in the BPU?
• Which application standard allows the DCS and the ECMs on the BPU to control all engine functions?