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United B756 SV Question > Engine, APU (FM: 6.70) > Flashcards

Engine, APU (FM: 6.70) Flashcards

1
Q

757RR/763: There are two engine idle speeds: minimum idle and approach idle. Approach idle is activated automatically when:
a) Trailing edge flaps are extended beyond position 20
b) Glideslope capture
c) Continuous ignition is selected to ON
d) Both throttles at idle and speed brakes are deployed

A

A) Trailing edge flaps are extended beyond position 20

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2
Q

757/763: Approach idle provides better engine acceleration for go-around or reverse thrust. After the ___ second delay following touchdown, the engines decelerate to ground idle to minimize landing distance.
a) 3
b) 8
c) 5
d) 10

A

C) 5

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3
Q

752PW/763: When the engine is operating, its EEC is powered by:
a) STBY AC and DC
b) A permanent magnet alternator (PMA)
c) Left main AC bus
d) Hot battery bus

A

B) A permanent magnet alternator (PMA)

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4
Q

757RR: When the engine is operating, its EEC is powered by:
a) Dual dedicated generators
b) STBY AC and DC
c) The left main AC bus
d) The hot battery bus

A

A) Dual dedicated generators

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5
Q

764: When the engine is operating, its EEC is powered by:
a) Permanent magnet generator
b) STBY AC and DC
c) Left main AC bus
d) Hot battery bus

A

A) Permanent magnet generator

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6
Q

752PW: Each EEC is a dual channel, primary and secondary, full authority unit. Can either channel be manually selected?
a) Yes, provided the EEC control switch(s) are taken out of AUTO
b) Yes, the crew always has complete control over the EEC
c) No
d) Yes, but only after the EEC control switch on the center pedestal is positioned to ON

A

C) No

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7
Q

752PW/763: If both channels in an EEC fail, the associated engine:
a) Will revert to its backup system, hydro-mechanical operation
b) Will maintain above idle speed
c) Will decelerate and remain at minimum fuel flow
d) Will be maintained at its current speed until the associated EEC switch is placed in the OFF position

A

C) Will decelerate and remain at minimum fuel flow

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8
Q

752PW: If EEC operation in both the EPR and N1 control modes is not possible, the N2 control mode is used by the ECC to control thrust. In the N2 control mode, what must the pilot be aware of when using reverse thrust on that engine?
a) Ground spoilers will not deploy
b) Rotor speeds must be monitored to prevent exceeding red line limits
c) The reverser will not deploy
d) Auto brakes are inoperative

A

B) Rotor speeds must be monitored to prevent exceeding red line limits

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9
Q

757/763: How can continuous ignition and approach idle be selected without using the engine anti-ice switches?
a) By placing the wing anti-ice switch to ON
b) By selecting flap position 1, 5 or 15
c) By performing a normal approach
d) Both cannot be selected unless the crew uses the engine anti-ice switches

A

C) By performing a normal approach

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10
Q

752PW: The EEC normally limits N2 to its redline limit. If this fails, there is a fail-safe backup provided by the fuel control unit that prevents uncontrolled acceleration by reducing and mechanically locking N2 speed to:
a) 90%
b) 95%
c) 85%
d) 100%

A

C) 85%

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11
Q

757RR: The thrust system consists of a hydromechanical engine fuel control with an EEC unit. Is any overspeed protection provided for the N2 rotor?
a) The N2 rotor has protection but only during reversing operations
b) There is no overspeed protection for the N2 rotor
c) There is protection for the N2 rotor provided the EEC is operating normally
d) There is always protection for the N2 rotor during all phases of engine operation

A

B) There is no overspeed protection for the N2 rotor

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12
Q

764: If both channels in an EEC fail, the associated engine:
a) Engine reverts to hydro-mechanical operation
b) Engine reverts to the N2 control mode
c) Engine decelerates to and remains at minimum fuel flow
d) All required control functions revert to a fail-safe position, resulting in an automatic controlled engine shutdown.

A

D) All required control functions revert to a fail-safe position, resulting in an automatic controlled engine shutdown.

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13
Q

767: According to the graphic, the L EEC ALTN light has illuminated. This indicates:
a) The EEC has reverted to the alternate control mode
b) Reverse thrust has no overspeed protection
c) Maximum thrust red-line protection is no longer available
d) The EEC can no longer control engine speed and decelerates to and remains at minimum fuel flow

A

A) The EEC has reverted to the alternate control mode

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14
Q

757/763: According to the graphic, what does the amber REV light indicate?
a) The reverser is fully retracted
b) The reverser is fully deployed
c) The reverser is in transit
d) A fault is detected in the reverser

A

C) The reverser is in transit

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15
Q

757RR: The thrust control system includes an electronic limiter control (ELC) unit. What is its primary purpose?
a) The ELC provides N2 overspeed protection only
b) The ELC provides N3 overspeed protection only
c) The ELC provides N1 overspeed protection only
d) The ELC provides N2 and N3 overspeed protection

A

C) The ELC provides N1 overspeed protection only

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16
Q

757RR: The thrust system consists of a hydromechanical engine fuel control with an electronic engine control (EEC) unit. The EEC sets thrust by controlling:
a) N1 based on thrust lever position
b) N2 based on thrust lever position
c) EPR based on thrust lever position
d) N3 based on thrust lever position

A

C) EPR based on thrust lever position

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17
Q

757/763: The thrust management computer (TMC) calculates a reference ___ based on existing pressure altitudes and ambient temperature data from the air data system.
a) N3
b) N2
c) N1
d) EPR

A

D) EPR

18
Q

757RR: The engine FUEL CONTROL switches have three positions: RUN, RICH, and CUTOFF. When should the RICH position be used during engine start?
a) For cold engine starts
b) When EGT indication exceeds 10 degrees centigrade
c) After an engine start malfunction
d) When EGT indication exceeds 20 degrees centigrade

A

A) For cold engine starts

19
Q

757RR: During engine start, at approximately ____________ the ENGINE START selector automatically moves from the GND position to the AUTO position.
a) IDLE speed
b) 47% N3
c) 50% N1
d) Anytime an engine start malfunction occurs

A

B) 47% N3

20
Q

757RR/767: Minimum idle is a lower thrust than approach idle and selected:
a) When continuous ignition is selected ON
b) When the LE SLATS are extended
c) During ground operations and all phases of flight except approach and landing
d) When the engine anti-ice switch is positioned to OFF

A

C) During ground operations and all phases of flight except approach and landing

21
Q

757/763: When the standby engine indicator (SEI) selector is _________ and both CRTs fail, engine indications will be displayed automatically.
a) Positioned to OFF
b) Positioned to AUTO or OFF
c) Positioned to AUTO
d) In any position as long as AC power is still available

A

C) Positioned to AUTO

22
Q

757/767: Rotating the ENGINE START selector to the FLT position causes:
a) Only one ignition system to operate
b) An auto relight to be initiated automatically
c) Both igniters to operate continuously regardless of the ignition selector position
d) Both ignition systems to operate but are time limited to 120 seconds max operation

A

C) Both igniters to operate continuously regardless of the ignition selector position

23
Q

757/767: During APU shutdown, the APU control system incorporates a time-delay feature permitting APU cooling. The time delay is variable from 0 to 120 seconds. If the APU is supplying pneumatic power, rotating the APU selector to OFF will:
a) Shut down the APU without delay and the FAULT light will illuminate
b) Switch the air conditioning packs to the STBY N mode
c) Begin the APU shutdown cycle by closing the APU bleed air valve
d) Command the APU fuel valve OPEN

A

C) Begin the APU shutdown cycle by closing the APU bleed air valve

24
Q

757/767: According to the graphic, the APU FAULT light is illuminated. The light illuminates whenever a fault is sensed. In this situation, the APU will:
a) Shutdown immediately
b) Shutdown only after placing the selector to OFF and the cool-down time is met
c) Continue to run if the fault was sensed while airborne
d) Continue to run if the fault was detected on the ground

A

A) Shutdown immediately

25
Q

757/767: During APU start and shutdown, the FAULT light illuminates momentarily. What causes its illumination?
a) The APU fuel valve is not in the commanded position
b) The APU DC fuel pump has failed
c) The APU bleed air pressure is low
d) The APU battery is not being charged

A

A) The APU fuel valve is not in the commanded position

26
Q

757/767: During normal operations, APU shutdown incorporates a time-delay feature permitting APU cooling. When is the APU shut down and the time-delay bypassed?
a) When the airplane BATT switch is turned off while on the ground
b) When the APU generator is supplying power and then fails
c) For a fault or a fire
d) Whenever a APU LOOP 1 STATUS message appears

A

C) For a fault or a fire

27
Q

757/767: Although the primary purpose of the APU is to supply electrical power and bleed air on the ground before engine start, the APU can also be started inflight, and operated up to:
a) Throughout the aircraft operating envelope
b) Up to 17,000 feet
c) For a maximum of 30 minutes after the airstart
d) For a maximum of 60 minutes after the airstart

A

A) Throughout the aircraft operating envelope

28
Q

757/767: Fuel is normally supplied to the APU from the left main fuel tank. Should conditions require, fuel can be supplied from:
a) The right main fuel tank only
b) Any fuel tank through the crossfeed system
c) The left main fuel tank only
d) The center fuel tank only

A

B) Any fuel tank through the crossfeed system

29
Q

757/767: Why is the APU shut down when the aircraft is on the ground and the BATT switch is selected OFF?
a) Fire detection is lost
b) Since the indications for the crew to determine APU operation will be lost
c) Fire protection is lost
d) The APU can not shut down unless the BATT switch is in the ON position

A

A) Fire detection is lost

30
Q

757/767: APU start requires:
a) The APU battery only
b) The aircraft main battery only
c) Both the APU battery and aircraft main battery
d) The APU battery or aircraft main battery

A

C) Both the APU battery and aircraft main battery

31
Q

757/767: The APU fuel valve is not in the commanded position during an APU start. What indication will be shown?
a) The Left AFT fuel boost pump light will not extinguish
b) There will be no indication shown
c) APU FAULT light will illuminate
d) The APU GEN OFF light will illuminate

A

C) APU FAULT light will illuminate

32
Q

757/763: During engine start, the left ENG VALVE light illuminates to indicate that:
a) The valve does not agree with the FUEL CONTROL switch position
b) The valve position is in agreement with the position of the ENG fuel valve
c) This is a normal indication during engine shutdown
d) A fault in the fuel metering unit

A

A) The valve does not agree with the FUEL CONTROL switch position

33
Q

752PW: According to the graphic, the R ENG LIMIT PROT light is illuminated. This indicates that the:
a) EEC is using N1 to control thrust
b) Engine has reverted to minimum fuel flow
c) EEC is using N2 to control thrust
d) Engine N2 rotor speed is locked at 105%

A

C) EEC is using N2 to control thrust

34
Q

763: If a fault exists in the thrust reverser system, this will be indicated by:
a) A white REV ISLN light and status message
b) An amber REV ISLN light and advisory message
c) An green REV ISLN light and a caution message
d) There is no alert given to the crew

A

B) An amber REV ISLN light and advisory message

35
Q

757/763: The assumed temperature for a reduced thrust takeoff can be set by using the assumed temperature selected on the TMSP or by entering the assumed temperature into the CDU TAKEOFF REF page. Assumed temperature takeoff thrust is limited to a ___% reduction of maximum takeoff thrust or selected climb thrust, whichever is the greater thrust value.
a) 45
b) 25
c) 30
d) 50

A

B) 25

36
Q

757RR: According to the graphic, the R EEC INOP light is illuminated. This indicates the EEC is:
a) Inoperative but will still protect the thrust limit
b) Inoperative and holding current fuel trim setting
c) Operating normally as this is a pilot awareness issue only
d) Inoperative and fuel trim setting has reverted to throttle position

A

B) Inoperative and holding current fuel trim setting

37
Q

757RR: According to the graphic, the L ELC INOP light is illuminated. This indicates:
a) N1 rotor speed has been reduced to idle speed
b) N3 rotor overspeed
c) N2 rotor speed is no longer controllable
d) ELC failure has been detected

A

D) ELC failure has been detected

38
Q

757/763: The crew can reset and blank all maximum exceedance values on EGT, N1, N2, and N3 by:
a) Pressing the EVENT RECORD button
b) Selecting the ENGINE DISPLAY button
c) Rotating the COMPUTER selector to the left EICAS computer
d) Pressing the maximum indication reset (MAX IND RESET) switch

A

D) Pressing the maximum indication reset (MAX IND RESET) switch

39
Q

757/767: Minimum N2 for selecting RUN is indicated by a magenta fuel on command bug. When is the bug shown?
a) Only on the ground when an engine is shutdown
b) Only inflight when the airspeed is greater than that for a windmilling start
c) Engine is shutdown on the ground, or inflight when X-BLD is displayed
d) Only inflight when X-BLD is annunciated

A

C) Engine is shutdown on the ground, or inflight when X-BLD is displayed

40
Q

752PW: The thermal anti-ice (TAI) indication is shown when engine anti-ice is on. The TAI bug (feather) will also be shown when:
a) Engine anti-ice is on and one wing anti-ice valve failed to open
b) Engine anti-ice is on and wing anti-ice has been selected ON
c) Engine anti-ice is on and both engine bleed air sources are operative
d) An engine is supplying bleed air, engine anti-ice is on, and the opposite engine bleed air source is inoperative

A

D) An engine is supplying bleed air, engine anti-ice is on, and the opposite engine bleed air source is inoperative

41
Q

764: There are two engine idle speeds: minimum idle and approach idle. The EEC selects these idle speeds automatically. Rotating the ENGINE START selectors to _______ manually selects approach idle.
a) CONT
b) FLT
c) AUTO
d) OFF

A

A) CONT

42
Q

764: The ignition system includes an automatic relight feature. It is enabled in the air or on the ground if N2 drops below _____. If this occurs, the EEC will energize both ignition systems for the affected engine(s).
a) Idle speed
b) 20%
c) 10%
d) 30%

A

A) Idle speed

United B756 SV Question (19 decks)

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