Fact Sheet 1

Question 1

thrust is felt on both static and _________ components

Answer 1

thrust is felt on both static and ROTATING components

Question 2

if pressure increases, temperature _________ (charles law)

Answer 2

if pressure increases, temperature INCREASES (charles law)

Question 3

temperature reduction would increase density and therefore increase ______

Answer 3

temperature reduction would increase density and therefore increase THRUST

Question 4

in a divergent duct, pressure __________ when velocity decreases

Answer 4

in a divergent duct, pressure INCREASES when velocity decreases

Question 5

a power plant is a _________ engine with everything connected on the aircraft

Answer 5

a power plant is a COMPLETE engine with everything connected on the aircraft

Question 6

gas turbine engines are stopped by closing the HP ____

Answer 6

gas turbine engines are stopped by closing the HP COCK

Question 7

free turbines have no mechanical connection to the ___________

Answer 7

free turbines have no mechanical connection to the COMPRESSORS

Question 8

during the off, the fan speed would be ____ than the HP compressor speed

Answer 8

during the off, the fan speed would be LESS than the HP compressor speed

Question 9

rapid movement of throttle can induce compressor _____

Answer 9

rapid movement of throttle can induce compressor SURGE

Question 10

increase in relative humidity would ________ density and thrust

Answer 10

increase in relative humidity would DECREASE density and thrust

Question 11

increase in intake density would ________ shaft horse power on a turbo prop

Answer 11

increase in intake density would INCREASE shaft horse power on a turbo prop

Question 12

a large jet pipe area would ______ exhaust velocity and thrust

Answer 12

a large jet pipe area would LOWER exhaust velocity and thrust

Question 13

to maintain thrust in a climb, EPR constant and so ___ must increase

Answer 13

to maintain thrust in a climb, EPR constant and so RPM must increase

Question 14

subsonic engine intakes are designed to give ____ ram ratio at high speed

Answer 14

subsonic engine intakes are designed to give HIGH ram ratio at high speed

Question 15

with an increase in altitude, a low bypass would have a ________ in thrust with an ________ in RPM

Answer 15

with an increase in altitude, a low bypass would have a DECREASE in thrust with an INCREASE in RPM

Question 16

a bypass ratio of 5:1 would indicate that the cold stream is _ times greater than the hot stream

Answer 16

a bypass ratio of 5:1 would indicate that the cold stream is 5 times greater than the hot stream

Question 17

pitot type intakes are divergent so maximum amount of ___ compression

Answer 17

pitot type intakes are divergent so maximum amount of RAM compression

Question 18

ram effect will ________ pressure and thrust

Answer 18

ram effect will INCREASE pressure and thrust

Question 19

hot air anti-icing ________ engine power output

Answer 19

hot air anti-icing DECREASES engine power output

Question 20

compressor blade twisting is to give correct ___ from root to tip

Answer 20

compressor blade twisting is to give correct AOA from root to tip

Question 21

airflow scheduling on axial flow altered for both __________ and ________ changes

Answer 21

airflow scheduling on axial flow altered for both TEMPERATURE and PRESSURE changes

Question 22

VIGVs reduce possibility of compressor _____ below design RPM

Answer 22

VIGVs reduce possibility of compressor STALL below design RPM

Question 23

ram ratio is _______ pressure compared to _____ pressure

Answer 23

ram ratio is AMBIENT pressure compared to INLET pressure

Question 24

as engine speed increases, compressor pressure ratio _________

Answer 24

as engine speed increases, compressor pressure ratio INCREASES

Question 25

combustion chamber swirl vanes anchor and _________ flame

Answer 25

combustion chamber swirl vanes anchor and STABILISE flame

Question 26

can-annular combustion chambers consist of a number of flame tubes in an ________ casing

Answer 26

can-annular combustion chambers consist of a number of flame tubes in an ANNULAR casing

Question 27

combustion in gas turbine engines ideally done at constant _________

Answer 27

combustion in gas turbine engines ideally done at constant PRESSURE

Question 28

impulse/reaction turbines pressure _________ from root to tip with velocity ___________ from leading edge to trailing edge

Answer 28

impulse/reaction turbines pressure INCREASES from root to tip with velocity INCREASING from leading edge to trailing edge

Question 29

fir tree roots allow blade torque and tensile load to be transmitted through to ____

Answer 29

fir tree roots allow blade torque and tensile load to be transmitted through to DISC

Question 30

HP NGV's are subjected to temperatures _____ their melting points and cooled by __ compressor air only

Answer 30

HP NGV's are subjected to temperatures ABOVE their melting points and cooled by HP compressor air only

Question 31

exhaust struts support the ____ and _________ the gas flow

Answer 31

exhaust struts support the CONE and STRAIGHTEN the gas flow

Question 32

nozzles are chocked when gas flow is ______

Answer 32

nozzles are chocked when gas flow is SONIC

Question 33

turbo-jet engines require noise ___________

Answer 33

turbo-jet engines require noise SUPPRESSION

Question 34

thrust reverse deflects exhaust gas through ___ degrees

Answer 34

thrust reverse deflects exhaust gas through 135 degrees

Question 35

full thrust reverse is approximately ____ of forward thrust

Answer 35

full thrust reverse is approximately HALF of forward thrust

Question 36

thrust reverse on fan engines reverses ____ stream only

Answer 36

thrust reverse on fan engines reverses COLD stream only

Question 37

bearing chamber pressure ________ pressure jet delivery

Answer 37

bearing chamber pressure OPPOSES pressure jet delivery

Question 38

typical carbon seal located by _______ and fitted to _____ mounted collar

Answer 38

typical carbon seal located by SPRINGS and fitted to SHAFT mounted collar

Question 39

straight roller bearing normally used for carrying ______ loads in gas turbine engines

Answer 39

straight roller bearing normally used for carrying RADIAL loads in gas turbine engines

Question 40

high oil temperature can lead to ___________

Answer 40

high oil temperature can lead to OXIDATION

Question 41

a gallon of fuel with an SG of 0.8 would weight _lbs

Answer 41

a gallon of fuel with an SG of 0.8 would weight 8lbs

Question 42

FSII prevents the ______ in fuel freezing

Answer 42

FSII prevents the WATER in fuel freezing

Question 43

oil flow in ________ ______ system controlled by limiting pressure in feed line

Answer 43

oil flow in PRESSURE RELIEF system controlled by limiting pressure in feed line

Question 44

full flow oil system has no ______ valve or filter __ ____

Answer 44

full flow oil system has no RELIEF valve or filter BY PASS

Question 45

engine oil pumps are normally ____ gear types

Answer 45

engine oil pumps are normally SPUR gear types

Question 46

squeezed film oil bearings used in engines to reduce __________

Answer 46

squeezed film oil bearings used in engines to reduce VIBRATION

Question 47

FADEC receives ___ data since thrust varies with mass flow, which varies with altitude and speed

Answer 47

FADEC receives AIR data since thrust varies with mass flow, which varies with altitude and speed

Question 48

on large aircraft, both FADEC are operating; one in control, the other receiving data but with command drivers _________

Answer 48

on large aircraft, both FADEC are operating; one in control, the other receiving data but with command drivers DISABLED

Question 49

on turbo-jet, as forward speed increases, SFC _________

Answer 49

on turbo-jet, as forward speed increases, SFC INCREASES

Question 50

in a barometric pressure control; a decrease in P1 will ________ servo pressure and pump stroke

Answer 50

in a barometric pressure control; a decrease in P1 will DECREASE servo pressure and pump stroke

Question 51

control of fuel supply during rapid acceleration prevents high ___ ____ temperature and possible _____

Answer 51

control of fuel supply during rapid acceleration prevents high JET PIPE temperature and possible SURGE

Question 52

FADEC has speed inputs from fan and turbine to detect fan shaft _______

Answer 52

FADEC has speed inputs from fan and turbine to detect fan shaft FAILURE

Question 53

ice formation in fuel reduced by using an ____

Answer 53

ice formation in fuel reduced by using an FCOC

Question 54

air starter motors have an _______ turbine

Answer 54

air starter motors have an IMPULSE turbine

Question 55

during ground operation, generators would be cooled by an _______ flow of atmospheric air

Answer 55

during ground operation, generators would be cooled by an INDUCED flow of atmospheric air

Question 56

LP cooling air outlet ___________ switch indicates engine overheat

Answer 56

LP cooling air outlet THERMOSTATIC switch indicates engine overheat

Question 57

fire prevented from spreading to cool zone by __________ pressure

Answer 57

fire prevented from spreading to cool zone by DIFFERENTIAL pressure

Question 58

air is bled by bleed valve to prevent _______ rear stages of the compressor

Answer 58

air is bled by bleed valve to prevent CHOKING rear stages of the compressor

Question 59

air starter ducts are normally _____ bore aluminium

Answer 59

air starter ducts are normally LARGE bore aluminium

Question 60

discharge resistors allow capacitors to discharge when HEIU is switched ___

Answer 60

discharge resistors allow capacitors to discharge when HEIU is switched OFF

Question 61

ballast resistors in engine temp system are fitted in _______ to give same reading for all engines

Answer 61

ballast resistors in engine temp system are fitted in PARALLEL to give same reading for all engines

Question 62

flight deck indicator for TGT indication uses _____________ which need an electrical supply

Answer 62

flight deck indicator for TGT indication uses THERMOCOUPLES which need an electrical supply

Question 63

EGT indicator is used to monitor the _________ of the turbine and engine in general

Answer 63

EGT indicator is used to monitor the INTEGRITY of the turbine and engine in general

Question 64

______ wheels operate on the principal of inductive reactance

Answer 64

PHONIC wheels operate on the principal of inductive reactance

Question 65

torque is the __________ to rotation

Answer 65

torque is the RESISTANCE to rotation

Question 66

_________ is used in water injection systems to increase the engine RPM/power

Answer 66

METHANOL is used in water injection systems to increase the engine RPM/power

Question 67

nozzle will increase in size when reheat selected to reduce ____ ________ in the exhaust and so preventing surge

Answer 67

nozzle will increase in size when reheat selected to reduce BACK PRESSURE in the exhaust and so preventing surge

Question 68

engine output will ________ on a turbo prop as aircraft increases

Answer 68

engine output will INCREASE on a turbo prop as aircraft increases

Question 69

jet thrust in a turboprop engine is approximately __%

Answer 69

jet thrust in a turboprop engine is approximately 10%

Question 70

_________ devices on turboprop prevent propeller failure

Answer 70

OVERSPEED devices on turboprop prevent propeller failure

Question 71

___________ power in turbo shaft engines is shaft power plus thrust

Answer 71

EQUIVALENT power in turbo shaft engines is shaft power plus thrust

Question 72

a free turbine will rotate ______ than the gas generator

Answer 72

a free turbine will rotate SLOWER than the gas generator

Question 73

APU fuel supply is taken from the ____ aircraft fuel tanks

Answer 73

APU fuel supply is taken from the MAIN aircraft fuel tanks

Question 74

APU switches operate at 3_, 9_ and 11_%

Answer 74

APU switches operate at 35, 95 and 110%

Question 75

engine mountings allow for radial and axial __________

Answer 75

engine mountings allow for radial and axial EXPANSION

Question 76

engine pods are _______ in order to stop the building up of flammable vapours and for engine cooling

Answer 76

engine pods are VENTED in order to stop the building up of flammable vapours and for engine cooling

Question 77

primary fuel stop fitted to engine ___

Answer 77

primary fuel stop fitted to engine FCU

Question 78

short circuits in __________ type fire wire do not five a false warning

Answer 78

short circuits in CAPACITANCE type fire wire do not five a false warning

Question 79

main fire extinguishers operated manually from ______ ____ only

Answer 79

main fire extinguishers operated manually from FLIGHT DECK only

Question 80

halogenic fire extinguishers are severely corrosive to __________

Answer 80

halogenic fire extinguishers are severely corrosive to TITANIUM

Question 81

before starting an engine, instruments should show indications _________ with existing conditions

Answer 81

before starting an engine, instruments should show indications EXISTING with existing conditions

Question 82

____ will alert engineers of an impending failure

Answer 82

AIDS will alert engineers of an impending failure

Question 83

a _____ vibration sensor could cause a spurious vibration indication

Answer 83

a LOOSE vibration sensor could cause a spurious vibration indication

Question 84

turbine rotor blades suffer ______ rupture

Answer 84

turbine rotor blades suffer STRESS rupture

Question 85

humidity indicator in MVP bag is ____ if still satisfactory

Answer 85

humidity indicator in MVP bag is BLUE if still satisfactory

Question 86

sponginess in MVP bag material by fuel or oil contamination may be limited by washing with ______

Answer 86

sponginess in MVP bag material by fuel or oil contamination may be limited by washing with WATER