EOC C-17 Exam Questions With Correct
Answers
The APU and EPU supply electrical power to the _____ of the aircraft, respectively.
a) right and left sides
b) left and right sides
c) forward and aft ends
d) aft and forward ends - ANSWER-b
The transformer/rectifiers perform the function of
a) providing power for APU start.
b) converting DC power to AC power.
c) providing emergency power for the DC buses.
d) converting AC power to DC power - ANSWER-d
When using the DC electrical system, the _____ configuration is the normal mode for
operation.
a) split-parallel
b) conversion
c) isolated
d) parallel - ANSWER-a
Which generator buses are the normal sources of power for the battery chargers?
a) 2 & 3
b) 1 & 2
,c) 1 & 4
d) 2 & 4 - ANSWER-c
Which of the following buses is always powered even if the battery switch is OFF?
a) Emergency power bus
b) Battery direct buses
c) AC transfer bus
d) DC emergency bus - ANSWER-B
Which position of the avionics bus switch (AV BUS) enables automatic load shedding
when the aircraft is on the ground with inadequate cooling?
a) ORIDE
b) OFF
c) AUTO
d) OPEN - ANSWER-C
Power for the backup emergency system is provided by the
a) electrical power unit.
b) auxiliary power unit.
c) aircraft batteries.
d) integrated drive generators. - ANSWER-aircraft batteries (2x 40 Amp-hour 28 VDC
batteries)
What should be done if the battery bus fails? - ANSWER-Land as soon as possible
Which component, during emergency/backup system operations, converts DC power
into AC power for the AC emergency bus? - ANSWER-Static inverter
,Which of the following emergency/backup system buses can be used to remove partial
power requirements from the batteries after initial critical actions have been taken? -
ANSWER-AC/DC transfer buses
If a GEN OIL caution message appears on the WAP, the corrective action is to -
ANSWER-turn the generator off.
If all generators fail, what becomes inoperative with a subsequent failure of one of the
remaining FCCs (FCC 1 or 4) or IRUs (1 or 4)? - ANSWER-Yaw damping
When performing the Electrical Fire and Smoke checklist, - ANSWER-pause after each
step which depowers a portion of the aircraft
During ground operations, you have been using hydraulic system 1 without any engines
running. The MC light comes on as well as the HYD cue light and the AUX SYS 1
PRESS LOW light. You would conclude that you have - ANSWER-failure of AUX pump
1.
If the hydraulic system pressure increases above 4200psi, depressurize - ANSWER-the
pumps one at a time.
The engine-driven hydraulic pumps are located in the - ANSWER-respective engine
accessory gearbox.
The engine-driven hydraulic pumps provide continuous hydraulic pressure of ______. -
ANSWER-4000
The primary purpose of the _____ pump is to assist in landing gear retraction or cargo
door/ramp closing in the event of No. 2 or 3 engine loss. - ANSWER-transfer
The RAT, located in the right landing gear pod, develops enough pressure to control the
aircraft for - ANSWER-all engine-out emergency.
, There are _____ pumps per system, located on and driven by their respective engine
accessory gearbox. - ANSWER-two
Transfer pump automatic shutoff may be caused by - ANSWER-a low quantity condition
in System 2 or 3.
During normal operation, the regulator levers will be positioned as follows: - ANSWER-
SUPPLY lever-ON
DILUTER lever-100%
EMERGENCY lever-NORMAL
The CREW OXY LOW warning illuminating on the WAP indicates the oxygen -
ANSWER-quantity remaining is less than 5 liters or supply pressure is below 60 ± 5 psi,
The normal pressure for the oxygen system is _____. - ANSWER-285 - 430 psi
The oxygen control panel for the passenger/auxiliary oxygen system is located at the
_____ loadmaster station - ANSWER-forward
The oxygen crossfeed switch is used to - ANSWER-connect the crew and passenger
oxygen systems.
The passenger oxygen system contains one _____ liter primary converter and one
_____ liter auxiliary converter. - ANSWER-75; 75
The primary source of oxygen for the crew system is _____ liquid oxygen converter(s). -
ANSWER-one 25-liter
When positive pressure is required, the oxygen mask must be well fitted to the face to
prevent rapid depletion of the oxygen supply. - ANSWER-True
For aircraft with extended range tanks what is the total fuel load with JP-8? - ANSWER-
245,208
Answers
The APU and EPU supply electrical power to the _____ of the aircraft, respectively.
a) right and left sides
b) left and right sides
c) forward and aft ends
d) aft and forward ends - ANSWER-b
The transformer/rectifiers perform the function of
a) providing power for APU start.
b) converting DC power to AC power.
c) providing emergency power for the DC buses.
d) converting AC power to DC power - ANSWER-d
When using the DC electrical system, the _____ configuration is the normal mode for
operation.
a) split-parallel
b) conversion
c) isolated
d) parallel - ANSWER-a
Which generator buses are the normal sources of power for the battery chargers?
a) 2 & 3
b) 1 & 2
,c) 1 & 4
d) 2 & 4 - ANSWER-c
Which of the following buses is always powered even if the battery switch is OFF?
a) Emergency power bus
b) Battery direct buses
c) AC transfer bus
d) DC emergency bus - ANSWER-B
Which position of the avionics bus switch (AV BUS) enables automatic load shedding
when the aircraft is on the ground with inadequate cooling?
a) ORIDE
b) OFF
c) AUTO
d) OPEN - ANSWER-C
Power for the backup emergency system is provided by the
a) electrical power unit.
b) auxiliary power unit.
c) aircraft batteries.
d) integrated drive generators. - ANSWER-aircraft batteries (2x 40 Amp-hour 28 VDC
batteries)
What should be done if the battery bus fails? - ANSWER-Land as soon as possible
Which component, during emergency/backup system operations, converts DC power
into AC power for the AC emergency bus? - ANSWER-Static inverter
,Which of the following emergency/backup system buses can be used to remove partial
power requirements from the batteries after initial critical actions have been taken? -
ANSWER-AC/DC transfer buses
If a GEN OIL caution message appears on the WAP, the corrective action is to -
ANSWER-turn the generator off.
If all generators fail, what becomes inoperative with a subsequent failure of one of the
remaining FCCs (FCC 1 or 4) or IRUs (1 or 4)? - ANSWER-Yaw damping
When performing the Electrical Fire and Smoke checklist, - ANSWER-pause after each
step which depowers a portion of the aircraft
During ground operations, you have been using hydraulic system 1 without any engines
running. The MC light comes on as well as the HYD cue light and the AUX SYS 1
PRESS LOW light. You would conclude that you have - ANSWER-failure of AUX pump
1.
If the hydraulic system pressure increases above 4200psi, depressurize - ANSWER-the
pumps one at a time.
The engine-driven hydraulic pumps are located in the - ANSWER-respective engine
accessory gearbox.
The engine-driven hydraulic pumps provide continuous hydraulic pressure of ______. -
ANSWER-4000
The primary purpose of the _____ pump is to assist in landing gear retraction or cargo
door/ramp closing in the event of No. 2 or 3 engine loss. - ANSWER-transfer
The RAT, located in the right landing gear pod, develops enough pressure to control the
aircraft for - ANSWER-all engine-out emergency.
, There are _____ pumps per system, located on and driven by their respective engine
accessory gearbox. - ANSWER-two
Transfer pump automatic shutoff may be caused by - ANSWER-a low quantity condition
in System 2 or 3.
During normal operation, the regulator levers will be positioned as follows: - ANSWER-
SUPPLY lever-ON
DILUTER lever-100%
EMERGENCY lever-NORMAL
The CREW OXY LOW warning illuminating on the WAP indicates the oxygen -
ANSWER-quantity remaining is less than 5 liters or supply pressure is below 60 ± 5 psi,
The normal pressure for the oxygen system is _____. - ANSWER-285 - 430 psi
The oxygen control panel for the passenger/auxiliary oxygen system is located at the
_____ loadmaster station - ANSWER-forward
The oxygen crossfeed switch is used to - ANSWER-connect the crew and passenger
oxygen systems.
The passenger oxygen system contains one _____ liter primary converter and one
_____ liter auxiliary converter. - ANSWER-75; 75
The primary source of oxygen for the crew system is _____ liquid oxygen converter(s). -
ANSWER-one 25-liter
When positive pressure is required, the oxygen mask must be well fitted to the face to
prevent rapid depletion of the oxygen supply. - ANSWER-True
For aircraft with extended range tanks what is the total fuel load with JP-8? - ANSWER-
245,208
