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Engines test 1 good copy
45問 • 2年前
  • Zachary Halycz
    • 通報

    問題一覧

  • 1

    What was sir frank whittle known for?

    He invented the “Turbo Jet”, it was first used in 1941

  • 2

    Germany was the first country to fly the gas turbine? True or False

    True

  • 3

    Ramjet and pulse jet are basic types of engines with non moving parts. True or False

    False

  • 4

    Gas turbine engines that utilize the turbine to power a shaft and NOT the propellor are called?

    Turbo shaft

  • 5

    Turbo shaft engine is considered a ducted engine? True or false

    False

  • 6

    APU (auxiliary power unit) can provide both electricity and high pressure / volume of air. True or false?

    True

  • 7

    Critical RPM range is when destructive harmonic vibrations exist? True or false

    True

  • 8

    Pulse jet engines use ___ to keep shutters open during operation

    Springs

  • 9

    Rockets are a reaction type engine that uses air to breath? True or False?

    False

  • 10

    EGT & OAT ?

    Exhaust gas temperature, outside air temperature

  • 11

    What are some benefits to modular design turbine engines?

    Engines can be broken down into separate sections, each section with its own log book and serial number. Each section can be replaced by a new assembly

  • 12

    Gas turbine combustion occurs at constant pressure, this cycle is called?

    The Brayton cycle

  • 13

    Does humidity affect turbine engine performance? True or false

    False

  • 14

    Does temperature affect turbine engine performance? True or false?

    True

  • 15

    High, mid and low bypass turbine engines are more efficient than turbojets, which bypass is most efficient?

    Hi-bypass

  • 16

    Regarding inspection purposes, how is the turbine engine divided? Cold-warm, warm-hot or hot cold?

    Hot section, cold section

  • 17

    Ramjets must be accelerated to ___ mph before it can start safely

    250mph

  • 18

    Thermal efficiency of a reciprocating engine is far greater than a large gas turbine engine at cruise. True or False

    False

  • 19

    Pressure is inversely proportional to velocity. Who stated this principle?

    Bernoulli

  • 20

    The best fuel consumption out of the turbine engine family is?

    Turbo prop

  • 21

    What is ESHP? ESHP + jet thrust =?

    Equivalent shaft horsepower. One pound of thrust = one thrust horsepower when flying at 375mph

  • 22

    What is EPR? It indicates a combination of inlet and exhaust pressure in the flight deck? True or false

    Engine pressure ratio, true

  • 23

    High bypass turbo fan engines has the fan generating 80% thrust. True or false

    True

  • 24

    One lb of thrust is equal to one thrust horsepower when the aircraft is flying at

    375mph

  • 25

    What altitude does pressure remain constant and temperature drops off?

    36,000 ft

  • 26

    Which duct would we use to reduce velocity and increase pressure? Convergent or divergent?

    Divergent

  • 27

    Acceleration can be defined as a rate of change in velocity and time. True or false?

    True

  • 28

    Increasing the cross sectional area of a duct is?

    Divergent

  • 29

    Subsonic airflow in a convergent duct, pressure___ velocity___

    Pressure Increasing, velocity decreasing

  • 30

    A decreasing cross-sectional area of a duct is ____?

    Convergent

  • 31

    Kinetic energy is energy in motion, true or false?

    True

  • 32

    What the difference between an inlet guide vane and a variable inlet guide vane? What is the primary function?

    Variable guide vane adjusts its angle to match airflow. Delivers air to the inlet of the engines compressor

  • 33

    Advantages of centrifugal compressor design

    1. Simple to manufacture 2. Low weight and cost 3. Accelerates air rapidly 4.Efficient energy transfer

  • 34

    Where is the highest pressure in a turbine engine

    The diffuser station

  • 35

    Is the air inlet considered part of the engine or airframe?

    Airframe

  • 36

    What is the function of the blow in/ auxiliary doors on an engine inlet?

    Bring in more air into engine under low speeds and high thrust demands from the plane

  • 37

    Using anti-icing may cause the turbine to lose some efficiency, true or false?

    True

  • 38

    Where is anti ice bleed air taken from the on the turbine engine?

    High temp bleed air from the compressor to the air inlet

  • 39

    Particle separator, vortex destroyer and swirl chamber have what in common??

    They reduce FOD entering the engines

  • 40

    What is a variable geometry inlet?

    An inlet with movable ducts that move in order to provide the best effiency for the engine at different performance levels. SR71, Concorde

  • 41

    On the ground engines running, the air inlet will have a ____(positve, negative or no charge?

    Negative

  • 42

    Independent / separate tribune referred to as?

    Free turbine

  • 43

    Twin spool/ triple spool compressor engines have one turbine assembly dedicated to each compressor spool? True or false

    True

  • 44

    Jet propulsion is an application of newtons law. M=FxA

    False

  • 45

    Thermal effiency of a reciprocating engine is far greater than a large gas turbine engine at cruise. True or false?

    False

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    問題一覧

  • 1

    What was sir frank whittle known for?

    He invented the “Turbo Jet”, it was first used in 1941

  • 2

    Germany was the first country to fly the gas turbine? True or False

    True

  • 3

    Ramjet and pulse jet are basic types of engines with non moving parts. True or False

    False

  • 4

    Gas turbine engines that utilize the turbine to power a shaft and NOT the propellor are called?

    Turbo shaft

  • 5

    Turbo shaft engine is considered a ducted engine? True or false

    False

  • 6

    APU (auxiliary power unit) can provide both electricity and high pressure / volume of air. True or false?

    True

  • 7

    Critical RPM range is when destructive harmonic vibrations exist? True or false

    True

  • 8

    Pulse jet engines use ___ to keep shutters open during operation

    Springs

  • 9

    Rockets are a reaction type engine that uses air to breath? True or False?

    False

  • 10

    EGT & OAT ?

    Exhaust gas temperature, outside air temperature

  • 11

    What are some benefits to modular design turbine engines?

    Engines can be broken down into separate sections, each section with its own log book and serial number. Each section can be replaced by a new assembly

  • 12

    Gas turbine combustion occurs at constant pressure, this cycle is called?

    The Brayton cycle

  • 13

    Does humidity affect turbine engine performance? True or false

    False

  • 14

    Does temperature affect turbine engine performance? True or false?

    True

  • 15

    High, mid and low bypass turbine engines are more efficient than turbojets, which bypass is most efficient?

    Hi-bypass

  • 16

    Regarding inspection purposes, how is the turbine engine divided? Cold-warm, warm-hot or hot cold?

    Hot section, cold section

  • 17

    Ramjets must be accelerated to ___ mph before it can start safely

    250mph

  • 18

    Thermal efficiency of a reciprocating engine is far greater than a large gas turbine engine at cruise. True or False

    False

  • 19

    Pressure is inversely proportional to velocity. Who stated this principle?

    Bernoulli

  • 20

    The best fuel consumption out of the turbine engine family is?

    Turbo prop

  • 21

    What is ESHP? ESHP + jet thrust =?

    Equivalent shaft horsepower. One pound of thrust = one thrust horsepower when flying at 375mph

  • 22

    What is EPR? It indicates a combination of inlet and exhaust pressure in the flight deck? True or false

    Engine pressure ratio, true

  • 23

    High bypass turbo fan engines has the fan generating 80% thrust. True or false

    True

  • 24

    One lb of thrust is equal to one thrust horsepower when the aircraft is flying at

    375mph

  • 25

    What altitude does pressure remain constant and temperature drops off?

    36,000 ft

  • 26

    Which duct would we use to reduce velocity and increase pressure? Convergent or divergent?

    Divergent

  • 27

    Acceleration can be defined as a rate of change in velocity and time. True or false?

    True

  • 28

    Increasing the cross sectional area of a duct is?

    Divergent

  • 29

    Subsonic airflow in a convergent duct, pressure___ velocity___

    Pressure Increasing, velocity decreasing

  • 30

    A decreasing cross-sectional area of a duct is ____?

    Convergent

  • 31

    Kinetic energy is energy in motion, true or false?

    True

  • 32

    What the difference between an inlet guide vane and a variable inlet guide vane? What is the primary function?

    Variable guide vane adjusts its angle to match airflow. Delivers air to the inlet of the engines compressor

  • 33

    Advantages of centrifugal compressor design

    1. Simple to manufacture 2. Low weight and cost 3. Accelerates air rapidly 4.Efficient energy transfer

  • 34

    Where is the highest pressure in a turbine engine

    The diffuser station

  • 35

    Is the air inlet considered part of the engine or airframe?

    Airframe

  • 36

    What is the function of the blow in/ auxiliary doors on an engine inlet?

    Bring in more air into engine under low speeds and high thrust demands from the plane

  • 37

    Using anti-icing may cause the turbine to lose some efficiency, true or false?

    True

  • 38

    Where is anti ice bleed air taken from the on the turbine engine?

    High temp bleed air from the compressor to the air inlet

  • 39

    Particle separator, vortex destroyer and swirl chamber have what in common??

    They reduce FOD entering the engines

  • 40

    What is a variable geometry inlet?

    An inlet with movable ducts that move in order to provide the best effiency for the engine at different performance levels. SR71, Concorde

  • 41

    On the ground engines running, the air inlet will have a ____(positve, negative or no charge?

    Negative

  • 42

    Independent / separate tribune referred to as?

    Free turbine

  • 43

    Twin spool/ triple spool compressor engines have one turbine assembly dedicated to each compressor spool? True or false

    True

  • 44

    Jet propulsion is an application of newtons law. M=FxA

    False

  • 45

    Thermal effiency of a reciprocating engine is far greater than a large gas turbine engine at cruise. True or false?

    False