ENGINE MONITORING – Air – DGCA Question Bank For Politics

#1. The temperature measured by the CHT (Cylinder Head temperature) probe is The?

Temperature within the hottest cylinder, depending on its position in the engine block.

Average temperature within the whole set of cylinders.

Temperature of the exhaust gases.

Temperature of the carburetor to be monitored when the outside air temperature is between -5°C and 10° C.

#2. The signal supplied by a transmitter fitted with a 3-phase AC generator, connected to RPM indicator, is a DC voltage varying with the RPM?

The indicator is a plain voltmeter with a rev/min scale measuring an AC voltage, The frequency of which varies with the RPM.

The indicaor converts the signal into square pulses which are the counted as an AC voltage varying with the RPM.

The indicator rectifies the signal via a diode bridge and is provided with a voltmeter a three-phase voltage, the frequency of which varies with the RPM.

The indicator is provided with a motor, which drives a magnetic tachometer.

#3. The signal supplied by a transmitter fitted with a magnetic sensor, connected to an RPM indicator is a three-phase voltage frequency varies with RPM?

The indicator is provided with a motor which drives a magnetic tachometer a DC voltage varying with the RPM.

The indicator is a simple voltmeter with a rev/min scale measuring an AC voltage varying with the RPM?

The indicator rectifies the signal via a diode bridge and is provided with a voltmeter measuring an AC voltage, the frequency of which varies with the RPM.

The indicator converts the signal into pulses which are then counted.

#4. A vibration indicator receives a signal from different sensors (accelerometers). It Indicates the?

Vibration period expressed in seconds.

Vibration amplitude at a given frequency.

Acceleration measured by the sensors, expressed in g.

Vibration frequency expressed in Hz.

#5. The transmitter of RPM indicator may consist of: 1. A magnetic senor supplying an inducted AC voltage. 2. A DC generator supplying a DC voltage. 3. A single-phase AC generator supplying an AC voltage. 4. A three-phase AC generator supplying a three-phase voltage. The combination of correct statements is?

1, 2, 3.

1, 2, 3, 4.

2, 3, 4.

1, 4.

#6. The Engine Pressure Ratio (EPR) is computed by?

Dividing turbine discharge pressure by compressor inlet pressure.

Dividing compressor discharge pressure by turbine discharge pressure.

Multiplying compressor Inlet pressure by turbine discharge pressure.

#7. The principle of detection of a vibration monitoring system is based on the use of?

2 accelerometers.

2 high and low frequency amplifiers.

2 high and low frequency filters.

A frequency converter.

#8. The green sector of the arc of a temperature gauge corresponds to?

An exceptional operating range.

A forbidden operating range.

A special operating range.

A normal operating range.

#9. A synchroscope is used on aircraft to?

Reduce the vibration of each engine. Reduce the vibration of each engine.

Reduce the rpm of each engine.

Achieve optimum control of on-board voltages.

Set several engines to the same speed.

#10. A thermocouple type themometer consists of?

A single-wire metal winding.

Two metal conductors of different type connected at one point.

Two metal conductors of the same type connected at two points.

A Wheatstone bridge connected to a voltage indicator.

#11. The yellow sector of the temperature gauge corresponds to?

A frequent operating range.

A forbidden operating range.

An exceptional operating range.

A normal operating range.

#12. In an engine vibration monitoring system for a turbojet any vibration produced by the engine is?

Directly proportional to engine speed.

Fed directly to the cockpit Indicator without amplification or filtering.

Amplified and filtered before fed to the cockpit indicator.

Inversely proportional to engine speed.

#13. Different pressure sensor are used according to the Intensity of the pressure measured (low, medium or high). Classify the following sensors by order of increasing pressure for which they are suitable? 1. Bellows type. 2. Bourdon tube type. 3. Aneroid capsule type.

2, 1, 3.

3, 1, 2.

1, 2, 3.

3, 2, 1.

#14. The RPM Indicator (or tachometer) of a piston engine can Include a small red are within the arc normally used (green arc). In the RPM range corresponding to this small red arc the?

Rating is the minimum usable in cruise propeller efficiency.

Is minimum at this rating.

Propeller generates vibration, continuous rating is forbidden.

Rating is the maximum possible in continuous mode.

#15. In order to measure temperature the cylinder had temperature (CHT) gauge utillses a?

Thermocouple consisting of two dissimilar metals.

Wheatstone bridge circuit.

Ratiometer circult.

Bourdon tube.

#16. A mainfoid pressure gauge of piston engine measures?

Fuel pressure leaving the carburettor.

Vacuum in the carburettor.

Absolute pressure in intake system near the inlet valve.

Absolute air pressure entering the carburettor.

#17. If a manifold pressure gauge consistently registers atmospheric pressure, the cause is probably?

Leak in pressure gauge line.

Too high float level.

Fuel of too low volatility.

Ice in Induction system.

#18. A millivolmeter measuring the electromotive force between the "hot junction " and the "cold junction" of a thermocouple can be directly gradusted in temperature values provided that the temperature of the?

Cold junction is maintained constant.

Hot junction is maintained constant.

Cold junction is maintained at 15° C.

Hot junction is maintained at 15° C.

#19. The main advantage of a ratiometer-type temperature Indicator is that it?

Is simple.

Can operate without an electrical power supply.

Carries out an Independent measurement of the supply voltage.

Is very accurate.

#20. The probe used to measure the air intake pressure of a gas turbine engined powerplant is?

A differential capsule.

A Bourdon tube.

A bellows sensor.

An anerold capsule.

#21. The pressure probe used to measure the pressure of a low pressure fuel pump is?

An anerold capsule.

A bellows sensor.

A Bourdon tube.

A differential capsule.

#22. The disadvantages of a single-phase A.C. generator tachometer are: 1. The pressure of spurious signals due to D.C. generator commutator. 2. The importance of line resistance on the information value. 3. The influence of temperature on the techometer information. The combination regrouping all the correct statements is?

2.

1, 2, 3.

1, 2

1, 3.

#23. The advantages of single-phase A.C. generator tachometer are: 1. The suppression of spurious signal due to a D.C. generator commutator. 2. The importance of line resistance on the information value. 3. The independence of the information in relation to the airborne electrical power supply. 4. The ease of transmission of the information. The combination regrouping all the correct statement is?

1, 3.

1, 2, 3, 4.

2, 3, 4.

2, 4.

#24. The advantage of a D.C. generator tachometer are: 1. Easy transmission of the information. 2. Independence of the information relative to the airborne electrical power supply. 3. Freedom from any spurious current due to the commutator. The combination regrouping all the correct statements is?

2, 3.

1, 3.

1, 2.

1, 2, 3.

#25. The electronic tachometer sensor is composed of?

The rotor of a single phase A.C. generator.

The rotor of a three phase A.C. generator.

A notched wheel rotating in front of an electro-magnet.

A circular magnet with four poles.

#26. The advantages of an electrical induction tachometer are: 1. The display is not sensitive to line resistance. 2. The measurement is independent of aircraft power supply. 3. The measurement is independent of temperature variations. 4. The option to use without restriction several Indicators connected in parallel to a single transmitter. The combination regrouping all the correct statements is?

1, 3, 4.

1, 2, 3, 4.

2, 3, 4.

1, 2, 4.

#27. The measurement of the turbine temperature or of the EGT (Exhaust Gas Temperature) is carried out at the?

Combustion chamber outlet.

Combustion chamber intake.

High pressure chamber intake.

High pressure turbine outlet.

#28. The sensors used to measure the exhaust gas temperature on an aircraft equipped with turbojets are?

Thermosouples.

Based on metallic parts whose expansion/contraction is measured.

Based on metallic conductors whose resistance Increase linearly with temperature.

Capacitors whose capacity varies proportionally with temperature.

#29. The red pointer which is normally on the red line on the EGT (Exhaust Gas Temperature) indicators?

Allows the display of the parameter value to be adopted during take-off.

Shows the vibration level of the engine under consideration.

Moves when the corresponding value is exceeded and remains positioned at the maximum value that has been reached.

Shows the limit value not to be exceeded.

#30. A full Authority Digital Engine Control (FADEC) has the following functions : 1. Flow regulation (fuel, decelerations and accelerations monitoring). 2. Automatic starting sequence. 3. Transmissions of engine data to the pilot's instruments. 4. Thrust management and protection of operation limits. 5. Monitoring of the thrust reversers. The combination regrouping all the correct statement is?

1, 3, 4, 5.

1, 2, 3, 4, 5.

2, 4, 5.

1, 3, 5.

#31. The operating principle of the "Induction" type of tachometer is to measure the?

Electromotive force (EMF) produced by a dynamo or an alternator.

Frequency of the electric impulse created by a notched wheel rotating in a magnetic field.

Magnetic field produced by a dynamo or an alternator.

Rotation speed of an asynchronous motor energized by an alternator.

#32. The operating principle of an "electronic" tachometer is to measure the?

Rotation speed of an asynchronous motor energized by an alternator.

Magnetic field produced by a dynamo or an alternator.

Frequency of the electric impulse created by a notched wheel rotating in a magnetic field.

Electromotive force (EMF) produced by a dynamo or an alternator.

#33. In a 3-phase synchronous motor type tachometer indicator : 1. The transmitter is a direct current generator. 2. The voltage is proportional to the transmitter drive speed. 3. The frequency is proportional to the transmitter drive speed. 4. The speed indicating element is a galvanometer. 5. The speed indicating elements is a synchronous motor driving a magnetic tachometer. The combination regrouping all the correct statements is?

3, 5.

1, 2.

2, 5.

1, 4.

#34. The two main sources of information used to calculate turbojet thrust are the?

Fan rotation speed (or N1) or the total pressure at the low pressure turbine outlet.

Fan rotation speed (or N1) or the EPR (Engine Pressure Ratio).

High pressure turbine rotation speed or the EPR (Engine Pressure Ratio).

Fan rotation speed (or N1) or the total pressure at the high pressure compressor outlet.

#35. To permit turbine exit temperatures to be measured, gas turbines are equipped with thermometers which work on the following principle?

Gas pressure.

Thermocouple.

Bi-metallic strip.

Liquid expansion.

#36. On an aeroplane equipped with a constant speed propeller, the RPM indicator enables?

Control of power.

Selection of engine RPM.

On a twin-engine aeroplane, automatic engine synchronisation.

Control of the propeller regulator and the display of propeller RPM.

#37. Torque can be determined by measuring the?

Oil pressure at the fixed crown of an epicycloidal reducer of the main engine gearbox.

Phase difference between 2 impulse tachometers attached to a transmission shaft.

Frequency of an impulse tachometer attached to a transmission shaft.

Quantity of light passing through a rack-wheel attached to a transmission shaft.

#38. What type of sensor is employed to measure compressor air inlet temperature in a typical turbojet engine fuel system?

Temperature probe.

Mercury thermometer.

Alcohol thermometer.

Optical pyrometer.

#39. A millimetric voltmeter measuring the PD across the hot and cold junctions of a thermocouple, can be calibrated to indicate temperature by?

The cold junction is kept at absolute zero.

The cold junction is kept a zero degree Celsius.

The cold junction temperature is known.

The cold junction is kept at a constant temperature.

#40. The electrical supply for a basic thermocouple system is?h

Provided by a dedicated transformer.

Provided from the essential services busbar.

Self generated by the SEEBECK effect.

Self generated by the inductive reactance method.

#41. Cylinder head temperature on a piston engine is measured using a _ on the ?

Thermocouple coolest cylinder.

Resistive element hottest cylinder.

Resistive element exhaust manifold.

Thermocouple hottest cylinder.

#42. Temperature is measured in aircraft engine by means of? 1. Thermocouples, 2. Mercury. 3. Resistive elements. 4. Capacitive elements.

1, 2.

2, 3.

3, 4.

1, 3.

#43. If one of the probes in a typical gas turbine engine EGT system becomes defective, the indications would be?

Too high.

Too low.

Not significantly affected.

Lost.

#44. Cylinder head temperature measurement system typically work on the _________ principle?

Thermocouple.

Resistive.

Capacitive.

Thermal expansion (bi-meta strip).

#45. Thermocouples are?

Two dissimilar metals connected at one point.

Two dissimilar metals connected at two points.

Two dissimilar metals separated by a dielectric material.

Two similar metals connect at two points.

#46. Jet engine exhaust gas temperature is measured using?

A thermocouple.

A number of thermocouples connected in series.

A number of thermocouples connected in parallel.

A thermistor.

#47. The pointer that aligns with the red line on a EGT gauge?

Indicates maximum temperature.

Is movable and indicates maximum temperature exceeding the red line.

Is adjustable to permit different limits to be set as required.

Is adjustable to permit higher limits to be set when taking-off at high mass in high mablent temperatures.

#48. A temperature gauging system employing thermocouples can be graduated to indicated temperature by?

By keeping the cold junction at 15 degrees Celsius.

By keeping the hot junction above 15 degrees Celsius.

By keeping the cold junction at a constant temperature.

By protecting the hot junction from high temperatures.

#49. Which of the following is used to measure temperature? 1. The seebeck effect. 2. the variation of electrical resistance with changes in temperature. 3. The variation of capacitance with changes in temperature. 4. Thermal expansion of liquids and solids.

1, 2, 3.

1, 3, 4.

1, 2, 4.

#50. A cylinder head temperature gauge measures?

All of the cylinders and sums the result.

All of the cylinders and averages the result.

The coolest cylinder only to preserve the sensor.

The hottest cylinder only.

#51. Where is EGT measured?

At the HP turbine outlet.

At the LP turbine outlet.

At the LP turbine inlet.

At the HP turbine inlet.

#52. Where is EGT measured?

At the turbine outlet.

At the turbine inlet.

In the jet pipe.

In the combustion chamber.

#53. If a ratiometer is used in the indicator of temperature measuring system rather than an ameter?

It will be less affected by line resistance losses.

It will be more affected by line resistance losses.

It will be ineffective due to line resistance losses.

It will always give accurate readings, regardless of line resistance losses.

#54. What type of sensor is typically used to measure lubricating oil temperature in a turbojet engine?

Resistive probe.

Capacitive probe.

Thermocouples probe.

Thermocouples

#55. What type of sensors are used in an EPR gauge?

Bourden tubes.

Bellows.

Aneroid capsules

Differential capsules.

#56. What type of sensors are typically used to measure carburettor inlet temperatures?

Thermocouples.

Resistive probes.

Reactive probes.

Capacitive probes.

#57. What type of sensors are typically used to measure engine oil temperature?

Thermocouples.

Resistive probes.

Reactive probes.

Capacitive probes.

#58. What type of sensor is normally used to measure inlet air temperature where the signal is to be employed for altitude compensation in a conventional (non FADEC) engine fuel system?

Liquid expansion.

Resistive.

Bi-metalic.

Capacitive.

#59. What does the amber are on an EGT gauge indicate?

Maximum EGT for normal operations.

Time limited EGT.

Altitude limited EGT.

Mass limited EGT.

#60. If a remote sensing pressure measurement system uses a ratiometer rather than an ammeter as its indicator, it will be?

More sensitive to line resistance changes.

Less sensitive to line resistance changes.

Not affected by line resistance changes.

Rendered unservicrable by line resistance changes.

#61. What measures inlet pressure?

Bourden tube.

Bellows.

Differential capsule.

Anerold capsule.

#62. Arrange the following sensors in increasing order of the pressures they would be used to sense? 1. Capsule, 2. Bellows. 3. Bourden tube.

1, 2, 3.

2, 3, 1.

3, 1, 2.

1, 3, 2.

#63. A capsule stack would be used to measure ___ pressure when a mechanical output for a given pressure change was required?

High large.

High small.

Low large.

Low small.

#64. What is a bellows used to measure?

Low pressures.

High pressures.

Low temperatures.

Density

#65. Turbine outlet pressure is detected by?

Aneroid capsule.

Bellows.

Differential capsule.

Bourden tube.

#66. A remote sensing pressure gauging system measuring low pressures, typically employs a ____ to move _ The variation in are then measured using a _ or _______?

Aneroid capsule, capacitor, capacitance, wheatstone bridge, ratiometer.

Bellows, variable resister, resistance, wheatstone bridge, ratiometer.

Bourden tube, variometer, capacitance, transistor, capacitor.

Differential capsule, ratiometer, current, capacitor, ammeter.

#67. EPR is calculated by?

Dividing compressor inlet pressure by HP turbine outlet pressure.

Diving HP turbine outlet pressure by air inlet pressure.

Diving LP turbine outlet pressure by LP compressor inlet pressure.

Subtracting LP compressor inlet pressure from JP turbine outlet pressure.

#68. A turbocharged piston has a rated boost of 10 PSI and critical altitude of 15000 ft amsl ISA. If the aircraft is at a pressure altitude of 10000 ft climbing at rated power, what will be is its MAP?

50 inches Hg.

30 Inches Hg.

10 PSI.

Ambient static plus 10 PSI.

#69. Vibration meters measure?

Accelerations in g.

Frequency in Hz.

Period in seconds.

#70. What does the vibration measuring system indicate to the pilot?

Relative frequency.

Relative amplitude.

Absolute frequency.

Absolute magnitude.

#71. Vibration is measured using? 1. Accelerometers. 2. Pieza crystals. 3. Inductive coils. 4. Capacitive elements. 5. Strain gauges.

1, 2, 3, 4.

1, 2, 3.

2, 3, 4, 5.

3, 4, 5.

#72. On what principles does a vibration meter work?

High frequency, low amplitude.

Accelerometers, frequency filters and amplifiers.

Accelerometers, amplitude filters, and comparators.

Dynamometers, frequency filters and amplifiers.

#73. A vibration meter indicates?

Frequency.

Pitch.

Period.

Relative amplitude.

#74. Vibration sensors on a turbofan engine are typically located?

Radially pointing on the fan and turbine casings.

Longitudinally pointing, on the fan and turbine casings.

On the gearboxes and output shafts.

On the HP spool and by-pass duct.

#75. A synchroscope is used to?

Coordinate fan RPMs in multi turbofan aircraft.

Coordinate the RPM of the high a low speed on turbofans.

To indicate RPM difference between engines in multi prop aircraft.

To ensure that AC generators are properly synchronised before coupling.

#76. A vibration monitoring system used __ to measure filters out unwanted _, then indicates ____, to the pilot?

Thermisters, radial movement, frequencies, absolute amplitude.

Accelerometers, axial movement, noise, relative amplltude.

Radiometers, radial movement, frequencles, absolute frequency.

Accelerometers, radial movement, frequencies and noise, relative amplitude.

#77. Typical vibration sensors include? 1. Inductive coils. 2. Phonic wheels.3. Magnetometers. 4. Piezo crystals.

1, 2, 4.

1, 4.

1, 3, 4.

2, 4.

#78. A tacho-generator RPM measuring system employs?

A single phase AC generator, the frequency of which varies with engine RPM, and is fed to a single phase sychronous motor driving a drag cup in the indicator.

A phonic wheel producing an AC signal, the frequency of which is fed to a synchronous motor in the indicator.

A DC motor, the frequency of which varies with engine RPM and is fed to a DC motor in the Indicator.

A three phase AC generator, the frequency of which varies with engine RPM, and is fed to a synchronous motor driving a drag cup in the indicator.

#79. A system which measures both torque and engine RPM employs?

A phonic wheel at each end of the output shaft, coupled to a device which measures frequency and phase difference between the two outputs.

A phonic wheel and a tacho-generator. The phonic wheel detects torque and the tacho-generator detects RPM.

A phonic wheel at each end of the output shaft, coupled to a device which measures frequency and voltage differences between the two outputs.

A tacho-generator at each end of the output shaft, coupled to a device which measures frequency and phase difference between the two output signals.

#80. The drag cup in a tacho-indicator?

Overcomes the effects of internal friction within the Indicator.

Converts rotary motion into limited angular displacement proportional to the variable being measured.

Converts limited angular motion into rotation.

Converts AC input into rotary motion.

#81. The squirrel cage motor in a tacho-Indicator?

Is driven directly by the engine.

Is driven by the output from a DC tacho-generator driven by the engine.

Is driven by three phase AC current from a tacho-generator driven by the engine.

Drives the indicator needle directly.

#82. The speed of rotation of the motor in a tacho-indicator is?

Constant.

Proportional to tacho-generator output voltage.

Proportional to tacho-generator output current.

Proportional to tacho-generator output frequency.

#83. What is EPR in a turbofan engine?

The ratio of compressor inlet pressure to turbine outlet pressure.

The ratio to HP turbine outlet pressure to Hp compressor inlet pressure.

The ratio of the integrated mean of LP turbine outlet pressure plus fan outlet pressure to the fan inlet pressure.

The ratio of combustion chamber pressure to compressor inlet pressure.

#84. If the EPR gauge compressor inlet air tapping becomes blocked?

The gauge will over read during the take-off run.

The gauge will over read in all conditions of flight.

The gauge will read zero.

The gauge will under read.

#85. If the EPR gauge over reads during the take-off run?

There is a danger that the aircraft will fall to take-off safely.

Climb performance will be improved.

The engine will exceed its limiting pressures and teperatures.

#86. Torque in a turbo-prop engine is indicated in? 1. Newton meters. 2. %. 3. PSI. 4. EPR. 5. Lbf ft.

1, 2, 3, 4.

1, 2, 3, 5.

2, 3, 4, 5.

1, 3, 4, 5.

#87. Turbo-prop engine torque is commonly measured using? 1. Rotary hydraulic systems. 2. Axial hydraulic systems. 3. Strain gauges. 4. Phase shifting phonic wheel systems.

1, 2, 3.

2, 3, 4.

1. 3, 4.

All of the above.

#88. The squirrel cage tachometer employs?

External DC power supply modified by the speed sensor.

External AC power supply modified by the speed sensor.

A three phase AC generator producing a signal frequency proportional to RPM.

#89. An engine vibration monitoring system employs?

Amplitude filters and thermistors.

Amplitude filters and amplifiers.

Frequency filters and amplifiers.

Frequency filters and capacitors.

#90. Which of the following is least affected by variation in power supply voltage?

Variometers.

Galvanometers.

Ratiometers.

Rheostats.

Dgca Question Bank For Pilots

Results

#1. The temperature measured by the CHT (Cylinder Head temperature) probe is The?

#2. The signal supplied by a transmitter fitted with a 3-phase AC generator, connected to RPM indicator, is a DC voltage varying with the RPM?

#3. The signal supplied by a transmitter fitted with a magnetic sensor, connected to an RPM indicator is a three-phase voltage frequency varies with RPM?

#4. A vibration indicator receives a signal from different sensors (accelerometers). It Indicates the?

#6. The Engine Pressure Ratio (EPR) is computed by?

#7. The principle of detection of a vibration monitoring system is based on the use of?

#8. The green sector of the arc of a temperature gauge corresponds to?

#9. A synchroscope is used on aircraft to?

#10. A thermocouple type themometer consists of?

#11. The yellow sector of the temperature gauge corresponds to?

#12. In an engine vibration monitoring system for a turbojet any vibration produced by the engine is?

#13. Different pressure sensor are used according to the Intensity of the pressure measured (low, medium or high). Classify the following sensors by order of increasing pressure for which they are suitable? 1. Bellows type. 2. Bourdon tube type. 3. Aneroid capsule type.

#14. The RPM Indicator (or tachometer) of a piston engine can Include a small red are within the arc normally used (green arc). In the RPM range corresponding to this small red arc the?

#15. In order to measure temperature the cylinder had temperature (CHT) gauge utillses a?

#16. A mainfoid pressure gauge of piston engine measures?

#17. If a manifold pressure gauge consistently registers atmospheric pressure, the cause is probably?

#18. A millivolmeter measuring the electromotive force between the "hot junction " and the "cold junction" of a thermocouple can be directly gradusted in temperature values provided that the temperature of the?

#19. The main advantage of a ratiometer-type temperature Indicator is that it?

#20. The probe used to measure the air intake pressure of a gas turbine engined powerplant is?

#21. The pressure probe used to measure the pressure of a low pressure fuel pump is?

#24. The advantage of a D.C. generator tachometer are: 1. Easy transmission of the information. 2. Independence of the information relative to the airborne electrical power supply. 3. Freedom from any spurious current due to the commutator. The combination regrouping all the correct statements is?

#25. The electronic tachometer sensor is composed of?

#27. The measurement of the turbine temperature or of the EGT (Exhaust Gas Temperature) is carried out at the?

#28. The sensors used to measure the exhaust gas temperature on an aircraft equipped with turbojets are?

#29. The red pointer which is normally on the red line on the EGT (Exhaust Gas Temperature) indicators?

#31. The operating principle of the "Induction" type of tachometer is to measure the?

#32. The operating principle of an "electronic" tachometer is to measure the?

#34. The two main sources of information used to calculate turbojet thrust are the?

#35. To permit turbine exit temperatures to be measured, gas turbines are equipped with thermometers which work on the following principle?

#36. On an aeroplane equipped with a constant speed propeller, the RPM indicator enables?

#37. Torque can be determined by measuring the?

#38. What type of sensor is employed to measure compressor air inlet temperature in a typical turbojet engine fuel system?

#39. A millimetric voltmeter measuring the PD across the hot and cold junctions of a thermocouple, can be calibrated to indicate temperature by?

#40. The electrical supply for a basic thermocouple system is?h

#41. Cylinder head temperature on a piston engine is measured using a _________ on the ________?

#42. Temperature is measured in aircraft engine by means of? 1. Thermocouples, 2. Mercury. 3. Resistive elements. 4. Capacitive elements.

#43. If one of the probes in a typical gas turbine engine EGT system becomes defective, the indications would be?

#44. Cylinder head temperature measurement system typically work on the _________ principle?

#45. Thermocouples are?

#46. Jet engine exhaust gas temperature is measured using?

#47. The pointer that aligns with the red line on a EGT gauge?

#48. A temperature gauging system employing thermocouples can be graduated to indicated temperature by?

#49. Which of the following is used to measure temperature? 1. The seebeck effect. 2. the variation of electrical resistance with changes in temperature. 3. The variation of capacitance with changes in temperature. 4. Thermal expansion of liquids and solids.

#50. A cylinder head temperature gauge measures?

#51. Where is EGT measured?

#52. Where is EGT measured?

#53. If a ratiometer is used in the indicator of temperature measuring system rather than an ameter?

#54. What type of sensor is typically used to measure lubricating oil temperature in a turbojet engine?

#55. What type of sensors are used in an EPR gauge?

#56. What type of sensors are typically used to measure carburettor inlet temperatures?

#57. What type of sensors are typically used to measure engine oil temperature?

#58. What type of sensor is normally used to measure inlet air temperature where the signal is to be employed for altitude compensation in a conventional (non FADEC) engine fuel system?

#59. What does the amber are on an EGT gauge indicate?

#60. If a remote sensing pressure measurement system uses a ratiometer rather than an ammeter as its indicator, it will be?

#61. What measures inlet pressure?

#62. Arrange the following sensors in increasing order of the pressures they would be used to sense? 1. Capsule, 2. Bellows. 3. Bourden tube.

#63. A capsule stack would be used to measure ___________ pressure when a ________ mechanical output for a given pressure change was required?

#64. What is a bellows used to measure?

#65. Turbine outlet pressure is detected by?

#66. A remote sensing pressure gauging system measuring low pressures, typically employs a ________ to move _________ The variation in ________ are then measured using a _________ or ___________?

#67. EPR is calculated by?

#68. A turbocharged piston has a rated boost of 10 PSI and critical altitude of 15000 ft amsl ISA. If the aircraft is at a pressure altitude of 10000 ft climbing at rated power, what will be is its MAP?

#69. Vibration meters measure?

#70. What does the vibration measuring system indicate to the pilot?

#71. Vibration is measured using? 1. Accelerometers. 2. Pieza crystals. 3. Inductive coils. 4. Capacitive elements. 5. Strain gauges.

#72. On what principles does a vibration meter work?

#73. A vibration meter indicates?

#74. Vibration sensors on a turbofan engine are typically located?

#75. A synchroscope is used to?

#76. A vibration monitoring system used ______ to measure ______ filters out unwanted _______, then indicates ________, to the pilot?

#77. Typical vibration sensors include? 1. Inductive coils. 2. Phonic wheels.3. Magnetometers. 4. Piezo crystals.

#78. A tacho-generator RPM measuring system employs?

#79. A system which measures both torque and engine RPM employs?

#80. The drag cup in a tacho-indicator?

#81. The squirrel cage motor in a tacho-Indicator?

#82. The speed of rotation of the motor in a tacho-indicator is?

#83. What is EPR in a turbofan engine?

#84. If the EPR gauge compressor inlet air tapping becomes blocked?

#41. Cylinder head temperature on a piston engine is measured using a _ on the ?

#63. A capsule stack would be used to measure ___ pressure when a mechanical output for a given pressure change was required?

#66. A remote sensing pressure gauging system measuring low pressures, typically employs a ____ to move _ The variation in are then measured using a _ or _______?

#76. A vibration monitoring system used __ to measure filters out unwanted _, then indicates ____, to the pilot?