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M15 GTE > Exam Bank > Flashcards

Exam Bank Flashcards

1
Q

Why couldn’t gas turbines be made before 1930s

A

Materials hear resistant enough

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2
Q

How is fire extiextinguisher bottle discharged

A

Nozzle head

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3
Q

Newton’s second law

A

Force = mass x acceleration

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4
Q

What isobaric heating

A

Heating at constant pressure

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5
Q

Where is titanium alloy used

A

First stage of HPC

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6
Q

For axial turbine what increases pressure

A

Stator on its own

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7
Q

Ideal safety distance from engine intake

A

10 metres

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8
Q

Soap analysis

A

Spectrometric oil analysis program

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9
Q

How is apu compartment protected

A

Firewalls

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10
Q

Why are oil coolers built into hp pump

A

Reduce need for lots of pipeline

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11
Q

Advantage of tip clearance

A

Fuel efficiency

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12
Q

What reduces vibrations in turbine

A

Tip shrouds on top of blades

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13
Q

What’s turbo shaft operation

A

GTE that delivers power through a shaft to operate anything but a propeller

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14
Q

What does combustion chamber housing do

A

Supports fuel nozzle

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15
Q

How is fuel flow transmitter driven

A

By Newton’s second law

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16
Q

Overpressure relief valve opens when

A

Pressure reaches 1250psi

17
Q

How many apu mounts

A

3

18
Q

Where do you use starter motor valve manually

A

Underside of the engine

19
Q

What does starter motor use to start the engine

A

Accessory gearbox

20
Q

Flashpoint JetA & JetA1

A

38 degrees C

21
Q

Freezing point Jet A

A

-40

22
Q

Freezing point JetA1

A

-47 Degrees C

23
Q

Correlation between EGT and TIT

A

Positive

24
Q

What does EPR indicate

A

Thrust

25
Q

What is pour point

A

Lowest tempt oil moves in 31.75mm test tube

26
Q

What do you do before an engine run

A

Contact air traffic controller

27
Q

Axial flow pressure ratio

A

1:3:1

28
Q

Axial flow advantage

A

At optimum compressor speed more efficient & cause less drag

29
Q

What are the two parts of twin control

A

Power level and conditioning lever

30
Q

What displays oil quantity in the cockpit

A

Engine Interface Unit

31
Q

Why does combustion case contract quicker then blades

A

Thinner material

32
Q

What happens if you over fill oil

A

Oil can be pumped through vent line into forward bearing compartment or de-oiler

33
Q

What fire extinguisher agents are used

A

Halon 1301

34
Q

What does thrust reverse interlock system do

A

Makes sure engine power can only be increased after the reverser is fully deployed

35
Q

What is a dual loop system

A

A&B independent and identical continuous loop systems

M15 GTE (19 decks)

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