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engines test 3, sem 2
25問 • 2年前
  • Zachary Halycz
    • 通報

    問題一覧

  • 1

    The accessory case provides a mounting pad to drive the engine accessories T/F

    true

  • 2

    The accessory case may act as a oil reservoir T/F

    true

  • 3

    Gears are sometimes used in aircraft instruments T/F

    True

  • 4

    What type of gear sets are used in accessory gearbox tower-shafts?

    bevel gears

  • 5

    The intermediate gearbox can be used to transfer the input from the tower shaft and change its direction to the main gearbox T/F

    True

  • 6

    Which accessory is driven by and can drive the accessory gearbox? (HYD pump, Generator, Fuel pump)

    starter generator

  • 7

    PT6 reduction gearbox the first stage has the sun gear being driven by engine driving three planetary gears around a fixed ring gear

    True. • The PT6 engines use a planetary type reduction gearbox system with two stages of reduction.

  • 8

    PT6 reduction gearbox the second stage of reduction has a sun gear being driven by the first stage planetary carriage.

    True. • The second stage reduction system is similar to the first stage but uses five planet gears instead of three.

  • 9

    The reduction gearbox on a turboprop can also have accessory drives T/F

    True

  • 10

    The reduction gearbox on a turboprop engine reduces prop speed to approximately what RPM?

    2000 RPM

  • 11

    A reduction gearbox has a 10:1 reduction ratio. If the engine turns at 20,000 RPM what will the propeller turn at?

    2000 RPM

  • 12

    Helicopter transmissions use worm gears T/F

    false. uses planetary gear system

  • 13

    Where can we find wear and damage limits regarding engines or gearboxes?

    AMM and CMM

  • 14

    Using servo bleed air can cause EGT, EPR and fuel efficiency to rise T/F

    False. As per Dave EGT increases, EPR increases, and fuel efficiency decreases.

  • 15

    Bearings and bearing cambers are cooled by turbine bleed air T/F

    false, uses compressor bleed air

  • 16

    EPR is the name of the system that is designed to burn up all the remaining fuel after shutdown T/F.

    False, EPA (environmental protection agency)

  • 17

    Gearboxes are usually equipped with ____ ​to visually determine if there is internal damage

    Magnetic Chip Detector (Also may be usage of differential pressure indicator)

  • 18

    HPTACC & LPTACC aid in efficiency at low altitudes and high power settings T/F

    False, high altitude low power

  • 19

    The exhaust section of a turbine engine has zero influence on overall thrust output T/F

    False

  • 20

    most common gear that is found in an accessory gearbox is?

    spur gear

  • 21

    Water and glycol are injected into some engines to reduced internal temperatures T/F

    False - Water and Methanol

  • 22

    What was installed on the Boeing 727 JT8 engines to reduce its noise output besides noise suppression material?

    hush kits, cookie cutters

  • 23

    When would we calibrate an engine torque meter/ HP gauge?

    Calibrate the HP gauge anytime performance run is to be carried out, or accuracy is questioned Replace horsepower gauge if defective.

  • 24

    The ignition system on a turbine engine produces a high voltage/ high amperage spark T/F

    True

  • 25

    What components are included in a high-tension ignition system?

    High Tension Leads, Exciter Box, Ignitor

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    問題一覧

  • 1

    The accessory case provides a mounting pad to drive the engine accessories T/F

    true

  • 2

    The accessory case may act as a oil reservoir T/F

    true

  • 3

    Gears are sometimes used in aircraft instruments T/F

    True

  • 4

    What type of gear sets are used in accessory gearbox tower-shafts?

    bevel gears

  • 5

    The intermediate gearbox can be used to transfer the input from the tower shaft and change its direction to the main gearbox T/F

    True

  • 6

    Which accessory is driven by and can drive the accessory gearbox? (HYD pump, Generator, Fuel pump)

    starter generator

  • 7

    PT6 reduction gearbox the first stage has the sun gear being driven by engine driving three planetary gears around a fixed ring gear

    True. • The PT6 engines use a planetary type reduction gearbox system with two stages of reduction.

  • 8

    PT6 reduction gearbox the second stage of reduction has a sun gear being driven by the first stage planetary carriage.

    True. • The second stage reduction system is similar to the first stage but uses five planet gears instead of three.

  • 9

    The reduction gearbox on a turboprop can also have accessory drives T/F

    True

  • 10

    The reduction gearbox on a turboprop engine reduces prop speed to approximately what RPM?

    2000 RPM

  • 11

    A reduction gearbox has a 10:1 reduction ratio. If the engine turns at 20,000 RPM what will the propeller turn at?

    2000 RPM

  • 12

    Helicopter transmissions use worm gears T/F

    false. uses planetary gear system

  • 13

    Where can we find wear and damage limits regarding engines or gearboxes?

    AMM and CMM

  • 14

    Using servo bleed air can cause EGT, EPR and fuel efficiency to rise T/F

    False. As per Dave EGT increases, EPR increases, and fuel efficiency decreases.

  • 15

    Bearings and bearing cambers are cooled by turbine bleed air T/F

    false, uses compressor bleed air

  • 16

    EPR is the name of the system that is designed to burn up all the remaining fuel after shutdown T/F.

    False, EPA (environmental protection agency)

  • 17

    Gearboxes are usually equipped with ____ ​to visually determine if there is internal damage

    Magnetic Chip Detector (Also may be usage of differential pressure indicator)

  • 18

    HPTACC & LPTACC aid in efficiency at low altitudes and high power settings T/F

    False, high altitude low power

  • 19

    The exhaust section of a turbine engine has zero influence on overall thrust output T/F

    False

  • 20

    most common gear that is found in an accessory gearbox is?

    spur gear

  • 21

    Water and glycol are injected into some engines to reduced internal temperatures T/F

    False - Water and Methanol

  • 22

    What was installed on the Boeing 727 JT8 engines to reduce its noise output besides noise suppression material?

    hush kits, cookie cutters

  • 23

    When would we calibrate an engine torque meter/ HP gauge?

    Calibrate the HP gauge anytime performance run is to be carried out, or accuracy is questioned Replace horsepower gauge if defective.

  • 24

    The ignition system on a turbine engine produces a high voltage/ high amperage spark T/F

    True

  • 25

    What components are included in a high-tension ignition system?

    High Tension Leads, Exciter Box, Ignitor