Power Plant and Fuel System Practice Exam

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• What are the three components of the fuel quantity indication system?
• What is the main purpose of the condenser in the Rankine cycle?
• How do air preheaters improve boiler efficiency?
• What is the purpose of a superheater in a boiler system?
• In the event of an over-speed, the valves that activate to shut down the engine are which?
• What is a Selective Catalytic Reduction (SCR) system and its purpose?
• Which component reduces the power turbine RPM and transfers power forward to the power output flange?
• What is the primary function of the Reduction Gearbox in the engine system?
• What does the Accessory Gearbox provide?
• Which pump is used to supply fuel to the engines during start?
• Where is the VARTOMS Mode Selector control located in the cockpit?
• TOT is the parameter displayed on the FLI and measured by engine thermocouples. What does TOT stand for?
• The major components of the accessory gearbox are the ______ gear train and the ______ gear train.
• Which statement best describes a function of the engine control system?
• There are ______ fuel tanks in the UH-72 located beneath the cabin floor.
• The VAR NR caution on the CAD and MAN pushbuttons for the VARTOMS Mode Selector illuminates in flight if the engines experience a torque split that exceeds what percent?
• What does 000 in the supply tank indicate on the CAD?
• What is ultimate analysis and what does it reveal about fuel?
• Which engine module reduces the power turbine RPM and transfers power forward to the power output flange?
• How is a typical boiler start-up sequence controlled?
• What is the effect of excess air on boiler efficiency and emissions?
• What is the mechanism by which a baghouse captures particulates?
• What indicators would signal a need for turbine blade inspection or replacement?
• Which additive is used to prevent fuel system icing in JP8?
• Which component automatically shuts down the engine when an overspeed is detected?
• Which device in a Rankine cycle is used to raise condensate back to high pressure?
• What is the primary purpose of a cooling tower in a power plant?
• What is condenser vacuum and why is it important?
• What safety equipment should be available for fuel handling operations?
• Bleed air is used to aid in start injector ventilation, prevent compressor stalls, and provide cabin heat. What term describes this air?
• Name the four fuel tanks in the UH-72.
• Among the listed engine components, which one is a gearbox rather than a turbine?
• In the combustion section, which combination is mixed and ignited to create power?
• If the CAD shows 000 for a supply tank, what does this indicate?
• Which gear train drives the starter generator and the oil pump?
• How many equipment plates does the aft portion of the engine have?
• What is the primary function of a cooling tower in a power plant?
• How are fabric filter bags cleaned in a baghouse?
• Which combination is commonly used as a NOx control approach in fossil-fired boilers?
• The Fuel Prime Pumps are used during which phase?
• How does a turbine governor maintain constant speed under varying load?
• What is the key difference between drum-type boiler and once-through boiler?
• Which statement correctly describes the effect of reheating exhaust steam between stages?
• Which component transmits turbine power to the main transmission?
• How many fire detectors are mounted in each engine compartment to indicate an external engine fire?
• The TWIST GRIP caution light will illuminate until the twist grip is placed in which position?
• The characteristics 'pressure pump', 'pressure relief valve', and 'fuel filter' belong to which engine fuel system?
• What describes the dry sump lubrication system?
• Where is the 4-way beeper switch located?
• On the CAD display, which tanks are indicated as empty?
• If one engine shuts down due to overspeed, what happens to the other engine's overspeed system?
• How many fire detectors are installed on each engine?
• What happens when the 4 way beeper switch is depressed in the left?
• What does the acronym VARTOMS stand for?
• What is the purpose of the condensate return system?
• A fault in VARTOMS triggers which caution?
• What is the purpose of pre-purge in a boiler start-up sequence?
• What is boiler blowdown and why is it performed?
• What is proximate analysis of coal and what are its components?
• The ENG OIL P caution indicates that which component has lost its oil pressure?
• Where are the prime fuel pumps located?
• How many stages of compression are in the engine's N1 section?
• Which are the two main types of ash in coal-fired plants?
• What is the purpose of the fuel vent system in the aircraft?
• How does a steam turbine control system respond to load changes?
• Which of the following describes a function of feedwater treatment in a power plant?
• Where are the transfer pumps located?
• Before attempting an inflight restart, N1 must reach what percent?
• Which of the following statements accurately identifies a major component of the accessory gearbox?
• What is the role of instrumentation in boiler control systems?
• What is condensate polishing and why is it used?
• Which section provides the second stage of compression, combustion, and first stage of expansion?
• What is the importance of feedwater deaeration and how is it achieved?
• Which system includes the Variable Rotor Speed Torque Matching System (VARTOMS)?
• What is the purpose of controlling total dissolved solids (TDS) in boiler water?
• How many equipment plates does the supply portion of the engine have?
• The F PUMP JET indication displays when the fuel in the main tank reaches how many pounds?
• The N2 gear train drives the main transmission; which component is driven by this gear train?
• Which boiler water chemistry practice helps prevent corrosion and scaling in boiler tubes?
• How do pulverized coal firing and stokers differ in fuel handling and combustion characteristics?
• If one engine is shutdown by over-speed protection, what happens to the OSP on the remaining engines?
• The total fuel capacity of the fuel tank systems is ______ pounds.
• What are the two main turbine stage types, and how do they differ?
• Which component reduces RPM from the power turbine?
• Which combination of systems is used to remove particulates and reduce NOx emissions from flue gas in a power plant?
• What does VARTOMS stand for?
• How do you perform a basic stoichiometric air calculation for a hydrocarbon fuel?
• In the engine module, which component is the Axial Compressor?
• During flight, which pumps are energized instead of the prime pumps?
• Which of the following is not a UH-72 fuel tank?
• What is the difference between wet and dry steam, and why does it matter in turbines?
• Which statement best describes the role of oxygen scavengers in boiler feedwater treatment?
• The overspeed threshold is reached at N2 speed of what percentage?
• When VARTOMS fails, which caution is displayed?
• Using replacement fuel affects the maximum time between overhaul for the engine by what amount?
• If an engine shuts down due to overspeed, what happens to the other engine's overspeed system?
• During the start sequence, you must turn on which switches to supply fuel to the engines?
• Which device is used to measure TOT for engine thermocouples?
• The following describes the fuel flow path: The ______ supplies fuel via the jet pump into the ______, which supplies fuel via the transfer pumps into the ______ for delivery to the engines.
• Which direction do the gas generator turbine and the power turbine module spin?
• Which component is driven by the Power Turbine to deliver shaft power to the load?
• In a combined cycle plant, how do gas turbine exhaust and steam turbine cycles interact for overall efficiency?
• What are the main types of draft used for combustion air in boilers?
• Which statement describes flue gas desulfurization systems used in power plants?
• The VARTOMS Mode Selector is located on which panel?
• Which statement about heat rate and efficiency relationship is correct?
• Which statement best describes ultimate analysis of coal?
• When the 4-way beeper switch is moved to the left, the power of engine #1 is what, engine #2 is what, and the rotor RPM remains what?
• Which component generates the hot gases that drive the turbines?
• Which item is a component of the fuel quantity indication system that sends fuel data from the tank to the cockpit?
• What describes heat rate and its calculation?
• The thermocouples on each engine are used to measure what parameter displayed on the FLI?
• Which engine system has failed?
• What are the two primary types of aviation fuel used for different engine types?
• What is the fundamental difference between fire-tube and water-tube boilers?
• In a combined cycle plant, which statement correctly describes how the gas turbine exhaust contributes to the steam cycle?
• How many fire detectors are installed on each engine?
• What is a boiler trip and what actions follow?
• In a pulverized coal boiler, what is the role of primary air and secondary air?
• What fuel remaining in the supply tanks does the LOW FUEL warning come on?
• Which end product is produced when NOx is reduced in an SCR system?
• Name two common NOx control methods used in fossil-fired boilers.
• What is flue gas desulfurization, and why is it used?
• The main tanks hold how many pounds?
• Why are reheaters used in some steam turbines?
• In a Rankine cycle, what is the correct sequence of the main processes?
• The right supply tank (larger) holds how many pounds?
• The symbol on the FLI indicates the compressor bleed valve is ______.
• At what N2 speed will the overspeed solenoid valve automatically activate to shut down the engine?
• Which switch must be depressed to activate the engine fire extinguishing system?
• What is the purpose of a condenser in a steam cycle?
• Which indicator is associated with torque split beyond 15% in the VARTOMS system?
• Which switch is used to shut off the fuel valves in an emergency?
• How does an electrostatic precipitator (ESP) remove particulates?
• The total fuel quantity in the two supply tanks will always be what quantity until the fuel in the main tanks is exhausted?
• What reagents are used in SNCR to reduce NOx?
• Which statement correctly distinguishes fly ash and bottom ash?
• Which safety practice is essential to reduce risk during maintenance on high-pressure boilers?
• In proximate analysis, what does moisture content refer to?
• Which of the following is a characteristic of the high-pressure engine fuel system?
• Which draft can be used in some boiler designs in addition to forced, induced, and balanced drafts?
• Which of the following fuel properties have the greatest impact on boiler efficiency and emissions?
• How is boiler efficiency assessed and what factors influence it?
• The CAD and MAN pushbuttons are associated with which cockpit feature?
• What type of lubrication system is installed on each engine?
• What is the function of the Power Turbine?
• What is boiler water carryover and what causes it?
• How does steam dryness fraction affect turbine performance and steam quality?
• What is the total number of fire detectors on both engines combined?
• Which of the following best describes common water treatment issues and remedies in power plants?
• The left supply tank holds how many pounds?
• If an engine is shutdown by the over-speed protection system, the other engines' over-speed protection system will be what?
• Which fuel property directly influences sulfur oxide emissions?
• What drives natural circulation in a boiler?
• How many equipment plates does the main portion of the engine have?
• Which indicator is illuminated when the torque split exceeds 15%?
• What does LOTO stand for and why is it critical in power plants?
• What is the function of the Transmission Shaft?
• Which turbine drives the compressor in a gas turbine engine?
• Why are two overflow connections installed at different heights between the forward main tank and the supply tanks?
• Which component is responsible for transmitting power with speed reduction to the load?
• What is the function of an economizer in a boiler system?
• Why are boiler safety relief valves required and how are they sized?
• Which alarm is shown if VARTOMS fails?
• What is a SNCR system and when is it used?
• Two overflow connections between the forward main tank and the supply tanks exist to accomplish what purpose?
• Extraction steam from turbines is used to preheat feedwater in a feedwater heater. From where is the extraction steam typically taken?
• Besides reclaiming heat, what is another key function of condensate return systems?
• Which component is responsible for initiating engine shutdown during an overspeed condition?
• Bleed air is used to aid in start injector ventilation, prevent compressor stalls, and provide cabin heat. Which option correctly states these uses?
• In which section of the gas generator are air and fuel mixed together and ignited?
• What caution appears when VARTOMS fails?
• The two sections of the fuel control unit are the manual control and which other control?
• A fuel sample should be taken prior to the __________ of the day.
• In a Rankine cycle, what happens to the steam after it expands in the turbine?
• What is boiler circulation in a steam plant?
• The engine trim 4-way beeper switch on the pilot's and co-pilot's collective is active only when which system is in manual mode?
• Which component provides the first stage of compression in the axial compressor assembly?
• What is the role of a feedwater heater in a steam plant?
• If N2 reaches the overspeed threshold, which component engages to shut down the engine?