Engines, Apu

Question 1

757: The thrust system consists of a hydromechanical engine fuel control with an electronic engine control (EEC) unit. Is any overspeed protection provided for the N2 rotor?

Answer 1

There is no N2 overspeed protection

Question 2

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 provide electrical power:

Answer 2

Throughout the aircraft operating envelope

Question 3

757/767: The APU fuel valve fails to reach the commanded position during an APU start or shutdown, this is indicated by:

Answer 3

APU FAULT light and EICAS advisory APU FUEL VAL

Question 4

757/767 When does the ENG START selector automatically move from the GND position to the AUTO position during engine start?

Answer 4

At approximately 50%

Question 5

757/763: When the standby engine indicator (SEI) selector is ____ and both CRTs fail, engine indications will be displayed automatically.

Answer 5

Positioned to AUTO

Question 6

764: If both channels in an electronic engine control (EEC) fail, the associated engine:

Answer 6

Performs an automatically controlled engine shutdown.

Question 7

767: The thrust control system includes an electronic limiter control (ELC) unit. What is its primary purpose?

Answer 7

N1 overspeed protection

Question 8

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).

Answer 8

Idle speed

Question 9

757/767: During APU start and shutdown, the FAULT light illuminates momentarily. What causes its illumination?

Answer 9

The APU fuel valve is not in the commanded position

Question 10

757/767 Minimum idie is a lower
Trust tan approach idle and is selected

Answer 10

During ground operation and all phases of flight except approach and landing

Question 11

757/763: There are two engine idle speeds: minimum and approach idle. One way approach idle is activated automatically is when:

Answer 11

Trailing edge flaps are extended beyond position 20

Question 12

757: According to the graphic, the R EEC INOP light is illuminated this indicates

Answer 12

A failure is detected in the system and the EEC trim motor holds the current trim level until the unit is turned off

Question 13

757/767: While on the ground, turning the BAT switch off causes the APU to:

Answer 13

Shut down

Question 14

763: If both channels in an electronic engine control (EEC) fail, the associated engine will:

Answer 14

Decelerate to and remain at minimum fuel flow

Question 15

757/767: Each engine Electronic Engine Control (EEC) is powered by:

Answer 15

Dual dedicated generators

Question 16

757/763: How can continuous ignition and approach idle be selected without using the engine anti-ice switches?

Answer 16

By performing a normal approach

Question 17

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

Answer 17

EPR

Question 18

757/767: During APU shutdown, the APU control system incorporates a time-delay feature. The time delay is variable from 0 to 120 seconds. Why is this feature incorporated?

Answer 18

To protect the unit from thermal shock

Question 19

757/763: When pushed, the maximum indication reset (MAX IND RESET):

Answer 19

Resets and blanks all maximum exceedance values on EGT, N1, N2, and N3

Question 20

757/767: In flight, APU bleed air is available up to approximately;

Answer 20

17,000 feet

Question 21

757/783: Approach idle provides better engine acceleration for go-around or reverse thrust. After a ___ second delay following touchdown, the engines decelerate to minimum die to minimize landing
distance,

Answer 21

5

Question 22

757/767: The magenta fuel on command bug is displayed. When is this bug shown?

Answer 22

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

Question 23

757: The thrust system consists of a hydromechanical engine fuel control with an electronic engine control (EEC) unit. The EEC sets thrust by controlling:

Answer 23

EPR based on thrust lever position

Question 24

764/763(66XX: 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.

Answer 24

CONT

Question 25

757/767: Fuel is normally supplied to the APU from the left main fuel tank. Should conditions require fuel can be supplied from

Answer 25

Any fuel tank through the crossfeed system

Question 26

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:
APU

Answer 26

Automatically shut down

Question 27

757/767: With the FUEL CONTROL switch out of CUTOFF, rotating the ENGINE START selector to the FLT position:

Answer 27

Bypasses the ignition selector and causes both ignition systems to operate continuously

Question 28

757: According to the graphic, the L ELC INOP light is illuminated. This indicates:

Answer 28

A failure is detected in the system and the ELC will hold the current trim level until the unit is turned off

Question 29

767: According to the graphic, the left electronic engine control alternate mode (ALT) switch light has illuminated. This indicates:

Answer 29

Automatic reversion or manual selection to the alternate mode

Question 30

757: The FUEL CONTROL switches have three positions: RUN, RICH, and CUTOFF. When should the RICH position be used during engine start?

Answer 30

EGT 0°

Question 31

757/767: During normal operations, APU shutdown incorporates a time-delay feature permitting
APU cooling. When is the APU shut down automatically and the cool-down delay bypassed?

Answer 31

For a fault or a fire