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777 SV > ENGINES and APU > Flashcards

ENGINES and APU Flashcards

1
Q

How many starters does the APU have?

A. Two, one electric and one air turbine.
B. Two, one hydraulic and one pneumatic.
C. One electric starter only.
D. Three, two electric and one air turbine.

A

A. Two, one electric and one air turbine.

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2
Q

The main airplane battery powers the APU _____.

A. inlet door, fuel valve, and fire detection system
B. fuel valve, fire detection system, and electric starter
C. inlet door, electric starter, and fuel valve
D. fire detection system, electric starter, and inlet door

A

A. inlet door, fuel valve, and fire detection system

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3
Q

On the ground with the engines not running, the APU shuts down with no cool-down period if which of the following occurs: _____?

A. low oil temperature
B. failure of one fire detection loop
C. high oil pressure
D. APU controller failure

A

D. APU controller failure

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4
Q

If AC power is not available, the DC pump in the _____ tank provides APU fuel.

A. auxiliary
B. center
C. right main
D. left main

A

D. left main

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5
Q

If the APU starts automatically in flight, it _____.

A. can only be shut down by pulling the fire handle
B. will shut down automatically if a normal source of power is restored.
C. cannot be shut down until the airplane is on the ground
D. can be shut down by positioning the selector to ON, then OFF

A

D. can be shut down by positioning the selector to ON, then OFF

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6
Q

The APU continues to operate in the attended mode and the EICAS message APU LIMIT displays for a ____ fault.

A. inlet door failure
B. fire
C. loss of overspeed protection
D. high EGT

A

D. high EGT

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7
Q

Regarding the Thrust Reverser System, the EEC’s also provide thrust limits protection in which mode?

A. Reverse operation.
B. Soft alternate.
C. Hard alternate.
D. Autostart.

A

A. Reverse operation.

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8
Q

With Autostart switch selected OFF, the spar and engine valves open, allowing fuel flow to the engine, when the _____.

A. engine fire handle is in and at least 50% N2 has been attained
B. engine fire handle is in, and the FUEL CONTROL switch is in RUN
C. FUEL CONTROL switch is in RUN and the associated fuel boost pump switches are ON
D. FUEL CONTROL switch is in RUN and the EEC senses positive fuel flow

A

B. engine fire handle is in, and the FUEL CONTROL switch is in RUN

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9
Q

How does the EEC shift from NORM to the soft alternate mode of operation?

A. Automatically with the loss of PMG power.
B. If the required signals are not available to operate in the normal mode.
C. Automatically with the loss of Main AC power.
D. Manually by pilot selection.

A

B. If the required signals are not available to operate in the normal mode.

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10
Q

The EEC automatically selects approach idle when _____.

A. flaps are commanded to 25 or greater
B. the landing gear is down and locked
C. one of the air driven demand pumps is operating with flaps up
D. the flaps are commanded 1 through 15

A

A. flaps are commanded to 25 or greater

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11
Q

On the ground, the autostart system will attempt a maximum of _____ start(s) (200A/B).

A. 2
B. 1
C. 4
D. 3

A

A. 2

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12
Q

The autostart system will not attempt a second start on the ground if _____.

A. a hung start is experienced
B. oil temperature is too low
C. there is no N1 rotation
D. oil pressure is low

A

C. there is no N1 rotation

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13
Q

During a ground engine start, what action does AUTOSTART perform?

A. It manually aborts in the event of a hung start.
B. It requires engines to be started siultaneously.
C. It monitors oil temperature and pressure.
D. It may abort, and then re-initiate the start.

A

D. It may abort, and then re-initiate the start.

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14
Q

The maximum altitude the APU can be used for Pack operation is _____.

A. 27,100 feet
B. 25,000 feet
C. 22,000 feet
D. 20,000 feet

A

C. 22,000 feet

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15
Q

What occurs when the APU selector is turned to OFF?

A. Initiates automatic start sequence.
B. Initiates normal shutdown.
C. Activates AC or DC fuel pump.
D. Powers APU controller.

A

B. Initiates normal shutdown.

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16
Q

In flight, the APU automatically starts regardless of APU selector position under which of these conditions?

A. Loss of all three hydraulic systems.
B. Loss of main DC power.
C. Loss of power to both AC transfer busses.
D. Engine failure

A

C. Loss of power to both AC transfer busses.

17
Q

How can pilots be certain that the APU is operating normally?

A. The left side fuel flow indicates a noticeably higher rate of consumption.
B. The APU status display can be carefully monitored.
C. The APU switch remains in the ON position.
D. The message APU RUNNING is displayed on EICAS.

A

D. The message APU RUNNING is displayed on EICAS.

18
Q

The START/IGNITION selectors control the _____ and provide continous ignition capability.

A. fuel flow
B. starter air valves
C. EEC
D. optimum N2 RPM

A

B. starter air valves

19
Q

The autostart system will attempt a second start for all the following conditions EXCEPT for _____.

A. no EGT rise
B. a compressor stall
C. insufficient air pressure
D. a hung start

A

C. insufficient air pressure

20
Q

During an inflight engine start, how does the EEC interact with the ignitors?

A. It activates the backup ignitors.
B. It alternates between ignitors for each subsequent attempted start.
C. It activates both ignitors after the pilot selects CON on the Start/Ignition selector.
D. It selects both ignitors.

A

D. It selects both ignitors.

21
Q

In the alternate mode, the EEC uses _____ as the controlling parameter.

A. N1
B. EPR
C. EGT
D. N2

A

A. N1

22
Q

The normal power source for engine ignition is main AC power. The backup source for ignition is _____.

A. standby AC power
B. either transfer bus
C. standby DC power
D. the right transfer bus

A

A. standby AC power

23
Q

During an inflight engine autostart, if the EGT limit is exceeded, the _____.

A. start is discontinued to allow engine cooling, and a manual start is necessary
B. start is discontinued to allow engine cooling, and the autostart is aborted
C. start is temporarily discontinued to allow engine cooling; however, the autostart is not aborted
D. EGT limit is ignored, and the autostart continues as normal

A

C. start is temporarily discontinued to allow engine cooling; however, the autostart is not aborted

24
Q

APU fuel can be provided by _____.

A. the DC fuel pump in the left main tank only
B. the left forward AC pump only
C. the right forward AC or DC pumps
D. any AC fuel pump supplying fuel to the left fuel manifold

A

D. any AC fuel pump supplying fuel to the left fuel manifold

25
Q

During takeoff, the EGT indication is _____.

A. often in the red band
B. often in the amber band
C. never in the amber band
D. always in the green band

A

B. often in the amber band

26
Q

With the AC power available, and the APU selector to ON, the _____ and cannot be turned off on the ground.

A. left forward pump operates automatically
B. pneumatic pump in the center tank
C. pneumatic pump in the left main tank
D. DC pump in the right main tank

A

A. left forward pump operates automatically

27
Q

The NORM mode of EEC’s (200A/B) operation provides _____.

A. N1 thrust reference
B. thrust limit and overspeed protection
C. EGT limit protection
D. N2 thrust reference

A

B. thrust limit and overspeed protection

28
Q

The autostart system will attempt a second start for all the following conditions EXCEPT for _____.

A. no EGT rise
B. insufficient air pressure
C. a hung start
D. a compressor stall

A

B. insufficient air pressure

29
Q

During a ground Autostart with the FUEL CONTROL switch in RUN, at the appropriate _____ the engine valve opens and the ignitor(s) energize.

A. EGT
B. N2 RPM
C. EPR
D. N1 RPM

A

B. N2 RPM

30
Q

During a ground engine start, what action does AUTOSTART perform?

A. It monitors oil temperature and pressure.
B. It manually aborts in the event of a hung start.
C. It requires engines to be started simultaneously
D. It may abort, and then re-initiate the start.

A

D. It may abort, and then re-initiate the start.

31
Q

Oil pressure, temperature, and quantity are _____.

A. displayed in amber wheneveer the EEC detects an engine flameout
B. not displayed on comapact EICAS
C. displayed on the secondary engine display
D. not displpayed because they are not measured

A

C. displayed on the secondary engine display

32
Q

An auto-relight is initiated anytime a flameout is detected. A flameout is detected by the EEC when _____.

A. N2 is less than idle RPM
B. the X-BLD prompt is displayed next to the N2 indication
C. the airspeed starts to decrease
D. the actual rpm is less than commanded throttle position

A

A. N2 is less than idle RPM

33
Q

Forward throttle movement is mechanically restricted until _____.

A. digital EPR indication changes from REV to THR
B. the reverse thrust lever is fully down
C. the EEC opens the reverser isolation valve
D. reverser translating sleeves hydraulically move aft

A

B. the reverse thrust lever is fully down

34
Q

Secondary engine indications are automatically displayed when _____.

A. the fuel control switch is moved to CUTOFF in flight
B. electrical power is transferred from external to airplane power
C. N1 RPM is below idle in flight
D. engine RPM is below approach idle in flight

A

A. the fuel control switch is moved to CUTOFF in flight

35
Q

What does the autostart system NOT monitor during engine start?

A. EGT
B. N1
C. Oil pressure and oil temperature
D. N2

A

C. Oil pressure and oil temperature

36
Q

The ALTN mode of EEC operation provides _____.

A. overspeed protection
B. throttle stagger indications on EICAS
C. thrust limit protection
D. EPR thrust reference

A

A. overspeed protection

37
Q

The EEC’s also provide thrust limit protection for which mode?

A. Hard alternate
B. Reverser operation
C. Soft alternate
D. Eco mode

A

B. Reverser operation

38
Q

In flight, the APU will automatically shut down with no cool-down for _____.

A. an overspeed
B. high EGT
C. high oil temperature
D. low oil pressure

A

B. high EGT

777 SV (13 decks)

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