Eduardo Diesel
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Eduardo Diesel
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A320Neo

Question 1 of 40

1

Conventional gas turbine engines cannot perform as efficiently as the PW1100G-JM. The low compressor and low turbineare restricted to less-than- optimaloperating speeds so that… 

Select one of the following:

  • Fan can turn clockwise and LPT turn counterclockwise

  • Fan and low rotor can operate at same dependent speeds for peak efficiency

  • Fan speed can be maintained in a range most efficient for fan diameter

  • It has an aerodynamic and protective enclosure for engine mounted components

Explanation

Question 2 of 40

1

Lightning strike protection in the inlet cowl is provided by… 

Select one of the following:

  • Line bars on both side of the outer barrel assembly

  • An expanded copper screen layer impregnated into the outer barrel assembly

  • Line bars into both side of the outer barrel assembly

  • An expanded copper screen layer impregnated into the inner barrel assembly

Explanation

Question 3 of 40

1

What devices provide maintenance access to Thrust Reverser Torque Box?

Select one of the following:

  • Fan cowl doors

  • Oil Tank Access Door (OTAD)

  • Thrust reverser cowl doors

  • Door Opening System (DOS)

Explanation

Question 4 of 40

1

Strakes are mounted to the fan cowl outer surface to improve flight characteristics by controlling airflow. Where are these devices mounted?

Select one of the following:

  • To outer side of each fan cowl doors.

  • To outer side of each thrust reverser cowl doors

  • To both the left and right fan cowl doors.

  • To both the left and right thrust reverser cowl doors.

Explanation

Question 5 of 40

1

This mount reacts to engine fore-aft, side, vertical, and rolls loads. Which one?

Select one of the following:

  • All tree mounts

  • Thrust link

  • Forward mount

  • Aft mount

Explanation

Question 6 of 40

1

What is a term describing the engine modules that make up the primary path of airflow through the engine?

Select one of the following:

  • Fan bypass air

  • Gaspath configuration

  • Engine rotor stages

  • Engine aerodynamic stations

Explanation

Question 7 of 40

1

Bearing support the weight of engine parts and permit one surface to roll over another with minimal friction and wear. What loads withstand the tapered roller bearings?

Select one of the following:

  • Both axial and radial loads

  • Axial load perpendicular to the shaft

  • Radial load parallel to the shaft

  • Axial load parallel to the shaft only

Explanation

Question 8 of 40

1

How do we name bearing that use a thin film of oil between the outer race and the bearing support to reduce vibration? 

Select one of the following:

  • Lift-off seals

  • Carbon face seals

  • Tapered roller

  • Oil-dampened

Explanation

Question 9 of 40

1

Some carbon face seals are called lift-off seals because extra air used to physically lift the seal off the ring during engine operation. Which bearing use this seal type? 

Select one of the following:

  • 3

  • 1, 1.5 and 2

  • 4

  • All 1, 1.5, 2, 3, 4, 5 and 6

Explanation

Question 10 of 40

1

What devices are installed beneath the fan blades to provide a radial preload of the blades, which also reduces fan rotor vibration? 

Select one of the following:

  • Front and rear lock rings

  • Dovetail root

  • Composite Teflon® wear strip

  • Composite fan blade spacers

Explanation

Question 11 of 40

1

This is a component of the fan case assembly, which straighten and direct the fan discharge airstream. They supply structural support of flight and blade-out loads and also and provide radial support of the engine. Which one? 

Select one of the following:

  • Fan case

  • FEGVs

  • Fan exit liner segments

  • Fan exit fairing and support.

Explanation

Question 12 of 40

1

In the FDGS, the star gear and the carrier to which they are attached do not move around the sun gear. The sun gear engages the star gears, moving them in a direction that causes the outer ring gear and fan to turn in the opposite direction from the sun gear and LPC/LPT, at a slower speed. What allows this design to increasing compressor efficiency? 

Select one of the following:

  • Hold both shafts to same speed.

  • For higher fan speeds and lower LPC/LPT speed

  • For lower fan speeds and higher LPC/LPT speed.

  • Adjust the VIGVs for varying engine operating conditions

Explanation

Question 13 of 40

1

In the HPC there are eight HPC rotor tubes held in a ring. These tubes turn with the rotor and push air to the center of the rotor where this air can flow to where it is necessary for cooling and pressure balance.Where these tubes are located? 

Select one of the following:

  • At the outer case walls.

  • Between the 7th and 8th stage rotors.

  • Attached to the rear of the HPC rotor shaft.

  • On the 2nd through 4th stage rotors

Explanation

Question 14 of 40

1

This mode permits the EEC to switch control of the fault loop to the standby channel, keeping control of the remaining functions with the original channel selected for that flight. Which mode is this? 

Select one of the following:

  • Passive mode

  • Active/passive mode

  • Active/standby mode

  • Active/active mode

Explanation

Question 15 of 40

1

Core harnesses, designated as W or WC, are attached to… 

Select one of the following:

  • The right side of the engine core only.

  • The left side of the fan case and the left and right side of the engine core.

  • The left side of the engine core only.

  • The left side of the engine core and the left and right side of the fan case.

Explanation

Question 16 of 40

1

Which sensor is used by the EEC to calculate engine inlet air pressure (P2) and to validate an independent air pressure reading from the aircraft? 

Select one of the following:

  • P2/T2 sensor

  • Pamb sensor

  • PS14 sensor

  • P2 sensors

Explanation

Question 17 of 40

1

On the fuel distribution system, the main and servo pumps each have pressure relief valves that limit the developing absolute pressure to a pre-set design value. The valves are spring-loaded closed, opening when fuel pressure exceeds a predetermined limit. Fuel that flows past the pressure relief valves bypasses the fuel pump exit.Where this fuel is recirculated back to? 

Select one of the following:

  • Aircraft fuel tank

  • Inlet to the pressure pump

  • Ecology tank

  • Fuel filter

Explanation

Question 18 of 40

1

This component supplies mounting and sealing of the IFPC, the fuel return pump, the Fuel Filter Differential Pressure (FFDP) sensor and the fuel filter housing assembly. It also transfers fuel between the components and serves as the connection point for external fuel lines. Which one? 

Select one of the following:

  • Fuel manifold

  • Fuel filter assembly

  • Flow divider valve (FDV)

  • Fuel Control Module (FCM)

Explanation

Question 19 of 40

1

The Fuel Indicating System monitors fuel flow and sends messages to the flight deck display about the system status and possible fuel filter clogs.Which one IS NOT a component of this system? 

Select one of the following:

  • Fuel flow meter (FFM)

  • IDGOOHE differential pressure sensor.

  • Fuel Filter Differential Pressure Sensor (FFDP)

  • Fuel Temperature Sensor (TF)

Explanation

Question 20 of 40

1

Each engine has two independent ignition systems designed for continuous operation. Normally the systems alternate, but they can be used simultaneously under some conditions.Which is one?

Select one of the following:

  • When a first attempt to autostart the engine is required.

  • When the aircraft is in takeoff mode.

  • If surge or flameout is detected during takeoff or flight

  • During airstart.

Explanation

Question 21 of 40

1

When using the Manual Start Ignition selection, the EEC energizes both igniters.Based on what logic and aircraft inputs? 

Select one of the following:

  • Thrust lever position.

  • Wing anti-ice status.

  • Continuous ignition commands

  • Cockpit engine start selector switch position.

Explanation

Question 22 of 40

1

The starter incorporates a single stage turbine wheel, single piece output shaft, and a ratchet and pawl clutch. The starter gears and bearing are splash lubricated. Where these take oil from? 

Select one of the following:

  • ATS housing

  • The MGB

  • The AGB

  • APU

Explanation

Question 23 of 40

1

The starter speed sensor detects the starter ring gear speed by detecting each tooth as it passes the tip of the magnetic probe. The teeth of the ring gear passing by the face of the magnet produce a change in the magnetic field. The time-varying electrical pulse signal is processed by the EEC and PHMU and converted to a rotational speed. How the EEC determine if the starter has failed? 

Select one of the following:

  • Opening of SAV after start.

  • Shearing of starter drive shaft.

  • Comparing this rotational speed with EEC input from Nf.

  • Comparing this rotational speed with EEC input from N2

Explanation

Question 24 of 40

1

During engine operation, the EEC sends electrically isolated drive signals to the dual channel torque motor that is part of the LPC SVA. The drive signals direct pressurized fuel to either side of the actuator piston to achieve the commanded position. What happen if there is a loss of electrical power to the torque motor? 

Select one of the following:

  • The actuator positions the vanes in the full open fail safe position for maximum airflow through the HPC.

  • The actuator positions the vanes in the full open fail safe position for maximum airflow through the LPC.

  • The EEC positions the vanes in the full close fail safe position for maximum airflow through the LPC.

  • The actuator positions the blades in the full open fail safe position for minimum airflow through the HPC.

Explanation

Question 25 of 40

1

This component provides discrete (on/off) control of HPC 3rd Stage servo pressure sent to the HPC active bleed air valve. Which one? 

Select one of the following:

  • 2.5 bleed valve air transducer

  • 2.5 bleed valve air solenoid

  • HPC Active Solenoid Valve

  • LPC Active Solenoid Valve

Explanation

Question 26 of 40

1

The Turbine Cooling Air (TCA) System provides continuous cooling air to the High Pressure Turbine, and to the Turbine Intermediate Case/ Low Pressure Turbine. Which is one engine part cooled by this system? 

Select one of the following:

  • High Pressure Turbine 2nd Stage vanes between the 1st and 2nd stage rotors.

  • HPT 3rd Stage blade attachment.

  • Compressor Intermediate Case (CIC) fairings

  • HPC rotor and blade attachments

Explanation

Question 27 of 40

1

This system cools the No. 4 Bearing compartment by sending 3rd Stage high compressor bleed air through the Buffer Air Heat Exchanger.Which one? 

Select one of the following:

  • The Turbine Cooling Air System.

  • The bearing ventilation system

  • The buffer cooling system.

  • The active clearance control system.

Explanation

Question 28 of 40

1

On N1 speed sensor, each time one of the teeth passes the N1 speed sensor, a change occurs in the magnetic field. The change produces a signal frequency that the EEC will use to calculate an N1 speed proportional to the coupling’s rotational speed. The short tooth will cause a different frequency. Which is used this frequency to? 

Select one of the following:

  • Show overspeed.

  • Locate zero degree for N1 trim balance purposes.

  • Locate zero degree for Fan trim balance purposes

  • Locate right hand position for Fan trim balance purposes.

Explanation

Question 29 of 40

1

Where the Cold Junction Compensation (CJC) used by the EEC to compute Exhaust Gas Temperature is located? 

Select one of the following:

  • Into the Main Oil Pressure sensor.

  • On the EEC

  • At the Main Oil Temperature sensor

  • On the four probes

Explanation

Question 30 of 40

1

This system makes the path for the turbine gases exiting the engine core. It gives direction to the turbine gases, which helps to increase thrust and reduce turbulence. Which one? 

Select one of the following:

  • Turbine Exhaust System

  • Thrust Reverser System

  • Translating sleeve

  • Inner Fixed structure (IFS)

Explanation

Question 31 of 40

1

What component provides thrust reverser support and protects the engine’s core cases and externals and forms the inner surface of the duct for fan bypass air? 

Select one of the following:

  • Turbine Exhaust System

  • Thrust Reverser System

  • Translating sleeve

  • Inner Fixed structure (IFS)

Explanation

Question 32 of 40

1

Which System of the thrust reverser is used to limit the deflection of the fixed structure, and to maintain the structural integrity in the event of a burst air duct? 

Select one of the following:

  • Latch beams

  • Closure Assist Assembly

  • Bifurcation Latching

  • Torque box assembly

Explanation

Question 33 of 40

1

This component of the thrust reverser actuation system (TRAS) provides a path for hydraulic system pressure to be ported from the Hydraulic Control Unit to the TRAS actuators. Which one? 

Select one of the following:

  • T-piece manifold

  • Closure Assist Assembly

  • Bifurcation Latching

  • Track Lock Valve

Explanation

Question 34 of 40

1

What device on the oil system prevents engine operation without a filter installed? 

Select one of the following:

  • A small spring-loaded metal tab.

  • An inlet shutoff valve.

  • A differential pressure sensor.

  • An oil filter bypass valve.

Explanation

Question 35 of 40

1

Maximum oil flow to lubricate the gear faces of the FDGS is required only at take-off. At cruise, oil flow is reduced and sent back to the oil tank. Less oil flowing to the gears reduces the oil heat load and increases fan drive gearbox efficiency. When in the fail safe position the valve reverts to maximum oil flow.Which valve allows the diversion of supply oil from the FDGS to the oil tank controlled by the EEC? 

Select one of the following:

  • ADSOV

  • JOSV

  • VORV

  • FOHEBV

Explanation

Question 36 of 40

1

Which valve controls and distributes oil flow between the Fuel/Oil Heat Exchanger and the Air/Oil Heat Exchanger controlled by the EEC? 

Select one of the following:

  • ADSOV

  • JOSV

  • VORV

  • FOHEBV

Explanation

Question 37 of 40

1

In the auxiliary lubrication system, on what event the windmill/auxiliary pump draws oil through the compartment sump, which is continually replenished by oil cast off from the gear system and main shaft bearings? 

Select one of the following:

  • In normal conditions

  • In low pressure conditions

  • During windmill operations

  • During zero or negative gravity events

Explanation

Question 38 of 40

1

This assembly keeps the auxiliary oil pump gear turning in the same direction during windmill conditions, regardless of the direction in which the fan shaft turns. Which one? 

Select one of the following:

  • Auxiliary oil reservoir

  • Anti-siphon tube

  • Tertiary latching

  • Sprag clutch gear assembly

Explanation

Question 39 of 40

1

In hot conditions, oil flows from the IDG to the core of the Oil/Oil Heat Exchanger, transferring heat. This usually occurs when the engine is at idle and the generator oil system is hotter than the engine oil system. 2. In normal conditions, heat is transferred to the IDG oil from the engine oil. The oil continues downstream to the IDG Fuel/Oil Heat Exchanger, where more cooling may take place. Of the mentioned statement: 

Select one of the following:

  • Only 1. Is true

  • Only 2. Is true

  • Both 1. And 2. are true

  • Both 1. And 2. are false

Explanation

Question 40 of 40

1

In the nacelle anti-ice protection system, the upper and lower PRSOVs are not interchangeable. A valve clocking feature distinguishes the ducts on the upper and lower valve types, preventing incorrect installation.Why these valves cannot be interchanged?*

Select one of the following:

  • Are different in size.

  • Due to regulating pressure differences.

  • They have NAI duct clocking features.

  • One has a NAI remote solenoid

Explanation

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