OGINS 06.03 - Automatic Pitch Trim (ATPL Only)

Results

Q1. Mach Trim is a device to compensate for:

the effects of fuel transfer between the main tanks and the tank located in the horizontal tail

the effects of temperature variation during a climb or descent at constant Mach

rearward displacement of the aerodynamic center at high Mach numbers by moving the elevator to nose-up

weight reduction resulting from fuel consumption during the cruise

rearward displacement of the aerodynamic center at high Mach numbers by moving the elevator to nose-up

Q2. In the automatic trim control system of an autopilot, automatic trimming is normally effected about the :

pitch roll and yaw axes.

pitch and roll axes only.

pitch axis only.

roll and yaw axes only.

pitch axis only.

Q3. The purpose of Auto Trim function in autopilot is to:

trim throttles to obtain smooth engine power variation

control elevator trim tab in order to relieve elevator load

help Auto Pilot compensate for crosswind influence

tell the pilot when elevator trimming is required

control elevator trim tab in order to relieve elevator load

Q4. An aeroplane is in steady cruise at flight level 270. The autothrottle maintains a constant calibrated airspeed. If the total temperature increases, the Mach number:

increases.

decreases if the outside temperature is higher than the standard temperature, increases if lower.

decreases.

remains constant.

Q5. An airplane is in steady cruise at flight level 290. The autothrottle maintains a constant Mach number. If the total temperature increases, the calibrated airspeed:

increases if the static temperature is higher than the standard temperature, decreases if lower.

decreases.

remains constant.

increases.

remains constant.

Q6. 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 correct statements is:

1,3,5

2,4,5

1, 3, 4, 5

1, 2, 3, 4, 5

Q7. The automatic power control system (autothrottle) of a transport airplane has the following mode(s): 1- capture and holding of speeds 2- capture and holding of Mach number 3- capture and holding of flight angle of attack 4- capture and holding of N1 or EPR (Engine Power Ratio) 5- capture and holding of flight paths. The combination regrouping all the correct statements is:

1,2,4

1, 2, 3, 5

1,4,5

2, 4

1,2,4

Q8. An aeroplane is in steady climb. The autothrottle maintains a constant calibrated airspeed. If the total temperature remains constant, the Mach number:

increases.

decreases.

decreases if the static temperature is lower than the standard temperature.

remains constant.

increases.

Q9. The autothrottle: 1- enable to catch and to maintain the N1 RPM 2- enable to catch and to maintain the N2 RPM 3- enable to catch and to maintain an airplane indicated airspeed (IAS) 4- is always engaged automatically at the same time as the autopilot. The combination regrouping all the correct statements is:

1 and 3

2 and 3

1 and 4

1, 3 and 4

1 and 3

Q10. An airplane is in steady cruise at flight level 290. The autothrottle maintains a constant Mach number. If the total temperature decreases, the calibrated airspeed:

decreases if the outside temperature is lower than the standard temperature, increases if higher.

remains constant.

decreases.

increases.

remains constant.

Q11. Which one of the following statements is true with regard to the operation of a Mach trim system:

It only operates above a pre-determined Mach number.

It operates over the full aircraft speed range.

It only operates when the autopilot is engaged.

It operates to counteract the larger than normal forward movements of the wing centre of pressure at high subsonic airspeeds.

It only operates above a pre-determined Mach number.

Q12. The Engine Pressure Ratio (EPR) is computed by:

dividing compressor discharge pressure by turbine discharge pressure.

multiplying compressor discharge pressure by turbine inlet pressure.

dividing turbine discharge pressure by compressor inlet pressure.

multiplying compressor inlet pressure by turbine discharge pressure.

dividing turbine discharge pressure by compressor inlet pressure.

Q13. The purpose of Auto Throttle is:

to maintain constant engine power or airplane speed

to synchronize engines to avoid "yawing"

automatic shut down of one engine at too high temperature

to deactivate manual throttles and transfer engine control to Auto Pilot

to maintain constant engine power or airplane speed

Q14. The purpose of the automatic trim is to: 1- reduce to zero the hinge moment of the entire control surface in order to relieve the load on the servo-actuator 2- ensure the aeroplane is properly trimmed when the autopilot is disengaged 3- maintain the same stability/manoeuverablity trade-off within the whole flight envelope. The combination regrouping the correct statements is:

2, 3.

1, 2, 3.

1, 3.

1, 2.

1, 2, 3.

Q15. The two main sources of information used to calculate turbojet thrust are the:

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 low pressure turbine outlet.

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

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

Q16. The Yaw Damper signal for a given rate of oscillation, is:

constant regardless of airspeed.

composed proportional according to the airspeed.

varied inversely according to the airspeed.

increased proportional with the square of the airspeed.

varied inversely according to the airspeed.

Q17. In order to know in which mode the autothrottles are engaged, the crew will check the:

TCC (Thrust Control Computer).

throttles position.

ND (Navigation Display).

PFD (Primary Flight Display)

Q18. An airplane is in steady descent. The autothrottle maintains a constant Mach number. If the total temperature remains constant, the calibrated airspeed:

decreases.

decreases if the static temperature is lower than the standard temperature, increases if above.

increases.

remains constant.

increases.

Q19. An aeroplane is in a steady climb. The autothrottle maintains a constant Mach number. If the total temperature remains constant, the calibrated airspeed:

decreases.

remains constant.

decreases if the static temperature is lower than the standard temperature, increases if higher.

increases.

decreases.

Q20. The automatic trim is a component of the autopilot pitch channel. Its function is to:

set the attitude to an instantaneous value before engaging the autopilot.

transfer a stabilized aeroplane to the pilot during autopilot disengagement.

reset the attitude, after engaging (the autopilot).

automatically disengage the autopilot in the case of an excessive pitch up.

transfer a stabilized aeroplane to the pilot during autopilot disengagement.

Q21. An aeroplane is in steady descent. The autothrottle maintains a constant calibrated airspeed. If the total temperature remains constant, the Mach number:

decreases.

remains constant.

increases if the static temperature is lower than the standard temperature, decreases if higher.

increases.

decreases.

Q22. An aeroplane is in steady cruise at flight level 270. The autothrottle maintains a constant calibrated airspeed. If the total temperature decreases, the Mach number:

decreases.

remains constant.

increases if the outside temperature is higher than the standard temperature, decreases if lower.

increases.

remains constant.

Q23. The purpose of an airplane automatic trim system is to trim out the hinge moment of the:

rudder(s)

elevator(s), rudder(s) and ailerons.

elevator(s)

elevator(s) and rudder(s)

elevator(s)

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Results

Q1. Mach Trim is a device to compensate for:

Q2. In the automatic trim control system of an autopilot, automatic trimming is normally effected about the :

Q3. The purpose of Auto Trim function in autopilot is to:

Q4. An aeroplane is in steady cruise at flight level 270. The autothrottle maintains a constant calibrated airspeed. If the total temperature increases, the Mach number:

Q5. An airplane is in steady cruise at flight level 290. The autothrottle maintains a constant Mach number. If the total temperature increases, the calibrated airspeed:

Q8. An aeroplane is in steady climb. The autothrottle maintains a constant calibrated airspeed. If the total temperature remains constant, the Mach number:

Q10. An airplane is in steady cruise at flight level 290. The autothrottle maintains a constant Mach number. If the total temperature decreases, the calibrated airspeed:

Q11. Which one of the following statements is true with regard to the operation of a Mach trim system:

Q12. The Engine Pressure Ratio (EPR) is computed by:

Q13. The purpose of Auto Throttle is:

Q15. The two main sources of information used to calculate turbojet thrust are the:

Q16. The Yaw Damper signal for a given rate of oscillation, is:

Q17. In order to know in which mode the autothrottles are engaged, the crew will check the:

Q18. An airplane is in steady descent. The autothrottle maintains a constant Mach number. If the total temperature remains constant, the calibrated airspeed:

Q19. An aeroplane is in a steady climb. The autothrottle maintains a constant Mach number. If the total temperature remains constant, the calibrated airspeed:

Q20. The automatic trim is a component of the autopilot pitch channel. Its function is to:

Q21. An aeroplane is in steady descent. The autothrottle maintains a constant calibrated airspeed. If the total temperature remains constant, the Mach number:

Q22. An aeroplane is in steady cruise at flight level 270. The autothrottle maintains a constant calibrated airspeed. If the total temperature decreases, the Mach number:

Q23. The purpose of an airplane automatic trim system is to trim out the hinge moment of the:

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