DIFERENCIA APLICADA

What information relating to IDG oil can be observed on EICAS?. a. Fuel temperature and oil quantity. b. Oil quantity and oil cooler outlet temperature. c. Oil Temperature only.

What is the purpose of the case thermal relief valve?. a. Allow over pressure oil to run to the drains cluster. b. Allow hot oil to drain overboard during over-temp conditions. c. remove the air pressure in the system during servicing.

The charge pressure switch sends it signal directly to which of the following?. a. The GCU. b. The EEC. c. EICAS.

How is IDG oil pressure controlled?. a. The Pressure Regulating and Dump Valve. b. The returning oil link orifices. c. The Charge Relief Valve.

Where is the IDG GEN DRIVE LIGHT signalled directly from?. a. The IDG GCU. b. ELMS. c. The BPCU back up generater convertor.

What is the indication if the back up generator is low on oil. a. SERVICE is shown on EICAS when the generator has shut down. b. OIL LEVEL is shown on EICAS all the time. c. BUG SVC is shown on EICAS when the generator is online.

1 The amber valve light below the switch on the wing and ENGINE ANTI-ICE control Panel (P5) comes on when the valve’ position disagrees with its commanded position. What is the message shown on the EICAS display?. a. ENG ANTI-ICE. b. WING ANTI-ICE. c. L or R ENG ANTI-ICE.

1. How can I power the EEC when the engine is shut down?. a. Recycling the engine fuel cut-off switches. b. Selecting the EEC test switches on the P61 panel. c. Selecting the test switches on the PIMU.

Pw4000 what air does the air/oil heat exchanger valve duet to the heat exchanger?. a. Fan air or 2.5 bleed air. b. Fan air only. c. Fan air and 2.9 bleed air.

Which of the following statements is correct? The EEC dedicated alternator provides: a. N2 signals to the speed cards and EICAS channel power. b. N2 signals and power to both channels of the EEC. c. The SEI (Standby Engine Instrumentation).

How can I power the EEC when the engine spinning < 8 % N2?. a. Recycling the engine fuel cut off switches. b. Selecting the EEC test switches on the P61 panel. c. Selecting the test switches on the PIMU.

If the Engine Mode Switch on P5 is indicating both ‘NORM’ and ‘ALT’ what is the significance?. a. The EEC has automatically gone to Alternate Mode of control. b. The switch is mechanically unlatched. c. he EEC has a failure in the controlling channel.

When is the controlling channel of the EEC changed over?. a. When the EEC reverts to Alternate Mode of Operation. b. When the EEC P5 Control switch is unlatched. c. On every Engine Start.

For what reason will the EEC use information from the Fuel Temperature Sensor?. a. To bypass Engine Oil away from the Oil/Fuel Heat Exchanger in a cold oil condition. b. To bypass Engine Oil away from the Oil/Fuel Heat Exchanger in a hot fuel condition. c. For Fuel temperature indication on EICAS Secondary Engine Parameter page.

What is the Engine Cowl opening sequence?. a. Fan Cowl, Core Cowl, Thrust Reverser Cowl. b. Fan Cowl, Thrust Reverser Cowl, Core Cowl. c. Inlet Cowl, Fan Cowl, Thrust Reverser Cowl.

When I open the engine Fan Cowl fully, what must I isolate?. a. The leading edge flaps. b. The PRSOV. c. The Ignition Exciters.

How is inlet cone anti icing achieved?. a. 7th stage air regulated to 40 psi. b. 12th stage air signalled from the HPC controllers. c. Expelled air from the No. 1 thrust bearing cavity.

How many stages are in the low and high compressor sections?. a. 3 stages of low and 9 stages of high. b. 5 stages of low and 14 stages of high. c. 5 stages of low and 11 stages of high.

How many main bearings does the PW4000 engine have?. a. 4. b. 5. c. 6.

Where is station 2.5?. a. Inlet to the HP compressor. b. Inlet to the Burner. c. Exit of the HP Turbine.

The Main Gear-Box is driven at what speed?. a. N2. b. N1. c. Constant 17000 rpm governed by the CSD.

Which of the following is connected to the REAR drain system?. a. Oil tank scupper. b. Starter oil seal. c. IDG oil seal.

(ATA 24) PW 4000. What happens to the cooling of the integrated driver generator (IDG) when the fuel/oil cooler has insufficient capacity?. A. The Air/oil heat exchanger supplies supplemental cooling. B. The IDG power output is reduced. C. The IDG is deactivated.

(ATA 70) What is the correct procedure when installing a castellated nut that must be secured with a cotter pin?(Page 28). A. Install the nut and torque to the maximum value, then align the hole for the cotter pin by loosening the nut, taking care not to go below the minimum torque value. B. Install the nut and tighten. Align the hole for the cotter pin by tightening further. Nuts safetied with cotter pins do no need to be torque tightened. C. Install the nut and torque to the minimum value, then align the hole for the cotter pin by tightening the nut, taking care not to go above the maximum torque value.

Which of the following statements is correct? The Back Up Generator (BUG) is: a. 120 kva Output Power, driven at a constant speed by a CSD. b. 120 kva Output Power VSCF (Variable Speed Constant Frequency). c. 20 kva Output Power VSCF (Variable Speed Constant Frequency).

The EEC obtains N2 Speed Information from?. a. The N2 speed sensor. b. The PMA (Permanent Magnetic Alternator) on the Main Gear Box. c. The Airframe ELMS interface.

What type of design is the PW4000?. a. Modular design consisting of 10 build groups and 4 major assemblies. b. Non-modular design consisting of 10 major assemblies. c. Modular design consisting of 4 build groups and 4 major assemblies.

What is the function of EDIU (Engine Data Interface Unit)?. a. Store Engine faults and interface to the AIMS for EICAS indication. b. Control the power supply source to the EEC. c. Convert ARINC 429 into ARINC 629 data and vice versa.

(ATA 72) What drives the angle gearbox?(Page 40). A. The low pressure compressor. B. The high pressure compressor. C. The engine accessories gear box.

Fuel interstage pressure is measured?. a. On the output of the main stage fuel pump. b. On the output of the flow divider. c. On the output of the centrifugal fuel pump.

What is the pressure of overall main stage fuel relief?. a. 900 psi. b. 1400 psi. c. 2230 psi.

Where does the fuel temp sensor measure fuel temperature?. a. As the fuel leaves the centrifugal pump. b. As the fuel leaves the Fuel/Oil cooler. c. As the fuel enters the fuel flow transmitter.

What is the purpose of the FMU pressure regulating valve?. a. Allow fuel to signal the servo fuel valves. b. Keep a positive fuel pressure across the metering valve. c. Ensure there is always fuel in the HMU keeping the HMU primed with fuel due to windmilling.

When is the MIN fuel position in the FMU used?. a. The EEC has energised the over-speed solenoid. b. The fuel cut off lever is in the RUN position. c. The EIDU has received an engine shut down signal.

How is the min pressure and shut off valve closed?. a. Electrically. b. Using Hydraulic fuel pressure and an internal spring. c. Electrically and hydraulically.

How is the windmill bypass valve closed?. a. Using an electrical signal. b. Using the gearbox speed signal. c. Using hydraulic fuel pressure.

9. What prevents the main fuel pump main stage from cavitating?. a. A booster stage inside the main fuel pump. b. A low pressure fuel pump. c. Booster pumps in the fuel tanks.

When the EEC is replaced, what happens with the programming plug?. a. Stays with the EEC. b. Must be replaced by a new programming plug. c. Stays with the engine.

With the Ignition & Start switch in AUTO, when will the igniters automatically fire?. a. Flaps not up or Engine Anti Ice on. b. Slats not up or Engine Anti Ice on. c. Slats up or Wing Thermal Anti Ice on.

Which of the following statements is correct? The throttles position is transmitted to the EEC on the engines: a. By cables running down from the throttle quadrant out through the wings to the EEC. b. Below each thrust lever is an electrical resolver (transducer) from which the thrust lever angle (TLA) signals are transmitted electrically to the dual channel electronic engine control. c. By cables running down from the throttle quadrant to the wing quadrant electrical resolver (transducer) from which the power lever angle (PLA) signals are transmitted electrically to the single channel.

What type of signal is sent to the interlock actuator. a. Servo fuel pressure. b. 28 VDC. c. PS3 air.

18. Where are the synchronisation shaft locks fitted?. a. To the upper and lower actuators. b. To the lower actuators. c. To the centre actuators.

What is the red line low oil pressure limit?. A. 230psi. B. Variable depending on N2. C. 70psi.

Engine oil SCAV temperature indicates which of the following?. a. The difference between the No3 bearing & Oil tank scavenge oil temperatures. b. Main Gearbox oil temperature from the EEC Thermocouple. c. The difference between the No3 bearing & Main Gearbox scavenge oil temperatures.

Which of the following statements is correct? Engine fire detection elements are: a. Inconnel filled tubes with thermistor core material. b. Gaseous filled tubes with pressure switches. c. Both of the above.