1

47 Regarding an engine EGT detection system, which of the following statements is true? A. Chromel is positive and alumel is negative B. Alumel can be either positive or negative depending on the ​application C. Alumel is positive and chromel is negative

A. Chromel is positive and alumel is negative

5 Turbine case cooling utilizes A. Fan air B. HP compressor air C. LP compressor air

A. Fan air

39 What initiates A.P.U shutdown? A. Fire detection, low oil pressure, high oil temperature B. Low oil pressure, low oil quantity, high oil temperature C. Over-speed, fire detection, low oil quantity

A. Fire detection, low oil pressure, high oil temperature

1 Air for anti-icing is taken from the A. HP compressor B. LP compressor C. accessory Gearbox

A. HP compressor

74 Engine anti-ice is taken from A. HP compressor B. Turbine C. LP compressor

A. HP compressor

9 When inhibiting an engine fuel system, indication that the job is complete is A. Inhibiting oil coming from the combustion chamber drain B. Storage oil coming from the central breather C. inhibiting oil coming from the cooling air outlet

A. Inhibiting oil coming from the combustion chamber drain

75 Which of the following factors helps determine the proper grade of oil to use in a particular engine? A. Operating speeds of bearings B. Adequate lubrication in various altitudes of flight C. Positive introduction of oil to the bearings

A. Operating speeds of bearings

68 What is the major function of the turbine assembly in a turbojet engine? A. Supplies the power to turn the compressor B. Increases the temperature of the exhaust gases C. Direct the gases in the proper direction to the tailpipe

A. Supplies the power to turn the compressor

54 What will happen to the return oil if the oil line between the scavenger pump and the oil cooler separates? A. The return oil will be pumped overboard B. The scavenger return line check valve will close and force the oil ​to bypass directly to the intake side of the pressure pump C. Oil will accumulate in the engine

A. The return oil will be pumped overboard

20 Why are oil seals pressurised? A. To ensure minimum oil loss B. To ensure that the oil is prevented from leaving the bearing ​housing C. To ensure oil is forced into the bearing

A. To ensure minimum oil loss

29 What is the purpose of pressure balance seal? A. To ensure the location bearing is adequately loaded throughout ​the ​engine thrust range B. To ensure HP compressor is dynamically balanced C. To ensure LP compressor is statically balanced

A. To ensure the location bearing is adequately loaded throughout ​the ​engine thrust range

52 The 'core engine' or 'gas generator' is made up of the following components: A. Turbine, combustion chamber, compressor B. Inlet, compressor, combustion chamber, turbine, exhaust C. Compressor, turbine, exhaust, propelling nozzle

A. Turbine, combustion chamber, compressor

30 When the A.P.U is running and pneumatics are on A. bleed valve is open, surge valve is modulating B. bleed valve is closed, surge valve is open C. bleed valve is open, surge valve is closed

A. bleed valve is open, surge valve is modulating

65 The heat absorbed by internal components can be detrimental to thrust and is prevented by A. bleeding air off the compressor to cool the components B. bleeding air off the compressor to heat the components C. reducing fuel flow to reduce internal temperature

A. bleeding air off the compressor to cool the components

86 On a turboprop engine, water methanol for cooling is injected into the A. compressor inlet or outlet B. engine hot zone C. combustion hot chamber

A. compressor inlet or outlet

90 Water methanol for cooling is injected at A. compressor inlet or outlet B. combustion chamber C. engine hot zone

A. compressor inlet or outlet

63 A turbine engine dry sump lubrication system of the self contained, high pressure design A. consists of pressure, breather, and scavenge sub-systems. B. has no heat exchanger. C. stores oil in the engine crankcase.

A. consists of pressure, breather, and scavenge sub-systems.

77 The turbine section of a jet engine A. converts dynamic pressure into mechanical energy B. extracts heat energy to drive the compressor C. circulates air to cool the engine

A. converts dynamic pressure into mechanical energy

28 Reduction in engine efficiency can be caused by A. ice formation on air intake B. low air temperature C. air velocity of 0.4 mach at compressor inlet

A. ice formation on air intake

46 As subsonic air flows through a convergent nozzle the velocity A. increases B. decreases C. remains constant

A. increases

62 A thermocouple indicator is basically a A. millivoltmeter B. milliohmeter C. milliameter

A. millivoltmeter

36 A duplex burner in a gas turbine engine has 2 orifices A. one for low speed conditions the second used for high speed ​conditions B. one for water injection and one for fuel flow. C. one for normal flow conditions and the 2nd one to increase the ​normal maximum flow.

A. one for low speed conditions the second used for high speed ​conditions

32 A high bypass engine results in A. overall slower airflow and greater propulsive efficiency B. greater propulsive efficiency C. overall faster airflow

A. overall slower airflow and greater propulsive efficiency

80 The type of oil pumps most commonly used on turbine engines are classified as A. positive displacement B. constant speed. C. variable displacement

A. positive displacement

87 Anti-ice bleed is controlled by A. regulator valve B. compressor pressure C. pressure relief valve

A. regulator valve

91 If an electrical de-icing system is operating, thrust will A. remain constant B. increase C. decrease

A. remain constant

70 When reheat is selected and in operation, the mass gas flow A. remains the same B. decreases C. Increases

A. remains the same

81 The viscosity of a liquid is a measure of its A. resistance to flow B. rate of change of internal friction with change in temperature C. weight and density

A. resistance to flow

71 The principle behind the working of ratio meter circuits is that A. the current induced in the two coils balances each other B. There is no current induced in the circuit C. the current induced in the two coils balances each other in the ​presence of a permanent magnetic field

A. the current induced in the two coils balances each other

8 Self-sustaining RPM means that A. the engine will run independently of external help B. the engine can accelerate to full power in under 5 seconds C. there is sufficient power for ground manoeuvring

A. the engine will run independently of external help

16 For any given power lever setting, the speed of the high pressure compressor is held constant by A. the fuel control governor B. secondary air C. the low pressure turbine

A. the fuel control governor

42 A free turbine is usually found on a A. turbo-prop B. turbo-jet C turbo-fan

A. turbo-prop

27 Inlet guide vanes are anti-iced with A. thermal blankets B. engine bleed air C. rubber boots

B. engine bleed air

25 The overall air/fuel ratio of a combustion chamber can vary between A. 10:1 and 45:1 B. 45:1 and 130:1 C. 130:1 and 200:1

B. 45:1 and 130:1

13 Which law relates to the kinetic, pressure, and potential energy in fluid flow? A. Charles's law B. Bernoulli's theorem C. Newton's laws

B. Bernoulli's theorem

21 What are the types of continuous fire detection system? A. Capacitance B. Capacitance and resistance C. Inductance and capacitance

B. Capacitance and resistance

10 What will the EPR reading, if the P1 sensor probe becomes blocked on take-off? A. EPR reading lower than actual B. EPR reading higher than actual C. EPR reading same as actual

B. EPR reading higher than actual

85 What is used as an extinguishant in fire bottles? A. Water B. Halogenated hydrocarbons C. Freon compounds

B. Halogenated hydrocarbons

19 Which of these characteristics is desirable in turbine engine oil? A. Low flash point B. High flash point C. High volatility

B. High flash point

38 An increase in the Ram Ratio of an intake will A. Have no effect upon the temperature of the air B. Increase the temperature of the air C. decrease the temperature of the air

B. Increase the temperature of the air

22 Which statement is true regarding the air passing through the combustion section of a jet engine? A. Most is used to support combustion B. Most is used for engine cooling C. A small percentage is frequently bled off at this point to be used ​for ​air-conditioning and/or other pneumatic powered systems

B. Most is used for engine cooling

26 What will result if an oil filter becomes completely blocked? A. Oil will flow at a reduced rate through the system. B. Oil will flow at the normal rate through the system . C. Oil flow to the engine will stop

B. Oil will flow at the normal rate through the system .

14 When the leading edge of a first-stage turbine blade is found to have stress rupture cracks, which of the following should be suspected? A. Faulty cooling shield B. Over temperature condition C. Over speed condition

B. Over temperature condition

4 Torque measurement is taken from the A. Prop shaft B. Reduction gearbox C. free turbine shaft

B. Reduction gearbox

18 Who establishes the recommended operating time between overhauls (T.B.O) of a gas turbine engine A. The engine manufacturer B. The operator (utilizing manufacturer data and trend analysis) ​working in conjunction with the Airworthiness Authority C. The Airworthiness Authority alone

B. The operator (utilizing manufacturer data and trend analysis) ​working in conjunction with the Airworthiness Authority

17 Which of the following engine variables is the most critical during turbine engine operation? A. Compressor RPM B. Turbine inlet temperature. C. Compressor inlet air temperature

B. Turbine inlet temperature.

59 After shutdown, flames are present in the exhaust pipe. The probable cause is A. a defective fuel control unit (F.C.U) B. a defective pressurizing and dump valve C. a defective H.P cock.

B. a defective pressurizing and dump valve

58 When running an engine the following light should be on: A. anti-collision and navigation light (if fitted) B. anti-collision (if fitted) C. navigation lights

B. anti-collision (if fitted)

72 The pressure of supersonic air as it flows through a divergent nozzle A. is inversely proportional to the temperature B. decreases C. increases

B. decreases

23 Specific gravity is a comparison of the weight of a substance to the weight of an equal volume of A. mercury at a specific temperature B. distilled water at a specific temperature . C. oil at a specific temperature

B. distilled water at a specific temperature .

7 Turbine blades are generally more susceptible to operating damage than compressor blades because of A. higher centrifugal loading B. exposure to high temperatures C. high pressure and high velocity gas flow

B. exposure to high temperatures

12 When starting a turbine engine, a hung start is indicated if the engine A. exhaust gas temperature exceeds specified limits B. fails to reach idle RPM C. RPM exceeds specified operating speed

B. fails to reach idle RPM

76 The three main types of turbine blades are A. reaction, converging, and diverging. B. impulse, reaction and impulse-reaction C. impulse, vector, and impulse-vector

B. impulse, reaction and impulse-reaction

69 The main purpose of combustion is to A. increase gas pressure B. increase gas velocity C. increase gas mass flow

B. increase gas velocity

56 The efficiency of a gas turbine engine at altitude A. remains constant B. increases C. Decreases

B. increases

34 On an E.G.T thermocouple system, the hot junction A. is placed in the cockpit B. is placed downstream of the combustion chamber C. is placed up stream of the combustion chamber

B. is placed downstream of the combustion chamber

48 Resistive and capacitive types fire-wires are tested with A. megger / voltmeter B. megger / ohmmeter C. multimeter

B. megger / ohmmeter

60 A convergent exhaust nozzle produces mainly A. momentum and pressure thrust B. momentum thrust C. pressure thrust

B. momentum thrust

92 Fire detection systems which are routed through another zone A. must be protected by the use of heat sinks B. must be protected from heat sources in the zone C. are not allowed

B. must be protected from heat sources in the zone

24 In the combustion chamber A. pressure static and volume remains constant B. pressure static decreases slightly and volume increases C. pressure static and volume decreases.

B. pressure static decreases slightly and volume increases

82 Normal gas turbine engine starting sequence is A. starter, fuel, ignition B. starter, ignition, fuel C. fuel, starter, ignition

B. starter, ignition, fuel

41 Pitot type intake are used in A. hypersonic aircraft B. subsonic aircraft C. supersonic aircraft

B. subsonic aircraft

53 The Brayton cycle is A. the name given to the intermittent cycling of an electrical de-icing ​system B. the continuous combustion cycle taking place in a gas turbine ​engine C. the constant velocity cycle taking place in a gas turbine engine

B. the continuous combustion cycle taking place in a gas turbine ​engine

11 When cleaning salt from a compressor A. use water then manufacturer's cleaning solution B. use water at low power then water at high power C. never use water, use only the recommended solution

B. use water at low power then water at high power

43 In a resistance type firewire, when hot A. resistance stays the same B. resistance increases C. resistance decreases

C. resistance decreases

50 The approximate percentage of the mass airflow taken in by the flame tube snout is A. 82% B. 8% C. 18%

C. 18%

15 Turbine inlet temperature is approximately A. 900 degrees Fahrenheit - 1700 degrees Fahrenheit B. 1220 degrees C - 2500 degrees C C. 850 degrees C - 1700 degrees C

C. 850 degrees C - 1700 degrees C

37 In which type of turbine engine combustion chamber is the case and liner removed and installed as one unit during routine maintenance? A. Can B. Can annular C. Annular

C. Annular

79 How is the combustion chamber drain valve closed? A. By 12th stage compressor air pressure B. By a return spring C. By combustion chamber gas pressure

C. By combustion chamber gas pressure

89 What section provides proper mixing of the fuel and efficient burning of the gases? A. Diffuser section and combustion section B. Combustion section and compressor section C. Combustion section only

C. Combustion section only

73 In what section of a turbojet engine is the jet nozzle located? A. Combustion B. Turbine C. Exhaust

C. Exhaust

40 Gas turbine engine fire bottles contain which of the following as extinguishing agents? A. Water B. Carbon Dioxide C. Halogenated Hydrocarbon

C. Halogenated Hydrocarbon

84 The velocity of supersonic air as it flows through a divergent nozzle A. decreases B. is inversely proportional to the temperature. C. Increases

C. Increases

64 Where are the lifting points on a high bypass turbine engine? A. On the fan and compressor casing B. On the fan, turbine and compressor casing C. On the fan and turbine casing

C. On the fan and turbine casing

31 What is the proper starting sequence for a turbojet engine? A. Starter, fuel, ignition. B. Ignition, starter, fuel. C. Starter, ignition, fuel.

C. Starter, ignition, fuel.

88 What is meant by a shrouded turbine? A. The turbine wheel is enclosed by a protective shroud to contain ​the ​blades in case of failure. B. The turbine wheel has a shroud or duct which provides cooling ​air ​to the turbine blades. C. The turbine blades are shaped so that their ends form a band or ​shroud.

C. The turbine blades are shaped so that their ends form a band or ​shroud.

3 In a FADEC system the signal to the HMC is the difference between A. Computed N2 and actual N1 B. Computed N1 and actual N2 C. actual N1 and computed N1

C. actual N1 and computed N1

78 Igniter plugs are cleaned by A. light sand blasting B. steel wool C. compressed air and brushing lightly with soft brush

C. compressed air and brushing lightly with soft brush

51 Engine pressure ratio is determined by A. dividing engine inlet total pressure by turbine outlet total pressure B. multiplying engine inlet total pressure by turbine outlet total ​pressure C. dividing turbine outlet total pressure by engine inlet total pressure

C. dividing turbine outlet total pressure by engine inlet total pressure

35 The turbine section A. increases air velocity to create thrust B. uses heat energy to expand and accelerate the gas flow C. drives the compressor section

C. drives the compressor section

83 A hung start is indicated by the A. exhaust gas temperature exceeds specified limits B. RPM exceeds specified operating speed C. fails to reach idle RPM

C. fails to reach idle RPM

6 Turbine creep is caused by A. High RPM and high torque B. High RPM and high centrifugal loads C. high RPM and high temperatures

C. high RPM and high temperatures

67 Noise from the jet wake when untreated by suppression is A. high frequency, high decibel B. low frequency, low decibel C. low frequency, high decibel

C. low frequency, high decibel

45 When checking the effect of inertia on the engine after heavy landing you would first check the A. thrust line B. compressor shaft for distortion C. module alignment

C. module alignment

33 When removing an engine for long-term storage, bleed valves should be A. locked closed B. removed C. open but blanked

C. open but blanked

44 On a twin spool turbo-shaft engine, the free turbine is connected to the A. LP gearbox B. HP gearbox C. output gearbox

C. output gearbox

49 Reduced blade vibration and improved airflow characteristic in gas turbines are brought about by A. fir-tree blade attachment B. impulse type blades C. shrouded turbine rotor blades

C. shrouded turbine rotor blades

61 Bernoulli's Theorem states that at any point in a flow of gas A. the static pressure and dynamic pressure are equal B. the static pressure is less than the dynamic pressure C. the total energy remains constant

C. the total energy remains constant

2 If air is taken from the compressor for air conditioning or anti-icing A. thrust will decrease EGT will decrease B. thrust will increase EGT will increase C. thrust will decrease EGT will increase

C. thrust will decrease EGT will increase

57 The exhaust gas temperature (EGT) indicator on a gas turbine engine provides a relative indication of the A. exhaust temperature B. temperature of the exhaust gases as they pass the exhaust cone C. turbine inlet temperature

C. turbine inlet temperature

55 In an axial flow turbine engine, compressor bleed air is sometimes used to aid in cooling the A. inlet guide vanes. B. fuel. C. turbine, vanes, blades, and bearings.

C. turbine, vanes, blades, and bearings.

66 Anti-ice is recommended during A. when OAT is below -10C B. thunderstorms C. when OAT is +10C and visible moisture

C. when OAT is +10C and visible moisture