Hawker 800/800XP Oral Exam Guide
(CAE) Questions With Correct
Solutions.
The APU may remain in operation while the aircraft is pressure re-fueled. True or
False? Answer- True
APU generator output is isolated from the bus bar system with external power
connected and switched on. True or False? Answer- True
The main aircraft batteries are _____ volt, _____ amp hour batteries. Answer- 24V,
25 or 28 amp hr.
How are the aircraft batteries charged? Answer- By either the engine generator,
APU generator, or external power
Explain the difference between the battery switch "ON" and the battery switch "BATT
EMERG" position. Answer- ON = the #1 battery supplies voltage to both emergency
contactors ; EMERG = each battery supplies voltage to its respective emergency
contactor and the battery charge contactors are forced open.
What is the purpose of the BATTERY ISOLATE switch? Answer- To isolate a single
battery from its charging source.
What is the purpose of the BUS TIE? Answer- To connect or isolate electrical power
between the PS1 and PS2 buses.
For external starts, a ground power unit capable of supplying _____ volts DC; a short
term capability of _____ amps, and fitted with a ______ amp current limiter must be
used. Answer- 28V; 1500A, 1100A
When charging the aircraft batteries off ground power, the EXT BATT CHG switch
should be selected off when the charge current drops to less than _____ amps.
Answer- 5A (NiCad batteries only)
The bus tie contactor will open when the voltage sensed on the PS1 bus bat
exceeds _____ volts or drops below _____ volts. Answer- 29.5; 24.5
What is the purpose of the stand-by inverter? Answer- To provide power to the XE
bus, captain's instruments, in the event of failure of the XS1 bus
, Two ____ or _____ VA static inverters are fitted in the rear bay and under normal
operation supply _____ V, _____ Hz for aircraft AC powered equipment. Answer-
J.E.T. or British Leyland
115V, 400Hz
When is the battery capacity check recommended prior to engine start? Answer-
Before an external power start.
Following a dual generator failure, approx. _____ minutes of battery power should be
available? Answer- 30 minutes (800XP) / 60 minutes (800)
When the APU generator is on line, it energizes bus bars: ________, _________,
and _______, and connects the number ______ battery to its charge circuit.
Answer- PS1, PE, and PE2
#2
Based on the previous question, which switch must be activated to connect the other
battery to its charge circuit? Answer- Bus Tie (closed)
During the external battery charging, a bus bar protection unit monitoring bus bar
voltage will open both battery contactors to disconnect battery charging if bus bar
voltage is above _____V or below _____V. Answer- 29.5; 24.5
Under normal conditions, the #1 inverter powers _____ and ______ bus bars and
the #2 inverter powers the _____ bus bar. Answer- XS1 and XE
XS2
What are the cockpit indications associated with an engine fire/overheat warning?
Answer- A bell and 6 (or 7) lights (800XP) / 5 lights (800)
In the event of dual generator failure with loss of power to the PS2 bus, there will be
a maximum of _____ shot(s) from the fire protection system to each engine.
Answer- 1
The RUDDER BIAS system is required to be operational for dispatch. True or False?
Answer- True
What is the purpose of the lift dump system? Answer- To shorten landing distance
Which flight controls are hydraulically operated? Answer- Flaps and airbrakes
Stall warning is provided by the _______ ________. Answer- stick shaker
What is the purpose of the rudder bias system? Answer- To assist the pilot in
maintaining directional control in the event of an engine failure.
Flaps at the 15° position and small inputs of airbrakes are recommended for descent
in icing conditions to prevent speed build up. True or False? Answer- False
(CAE) Questions With Correct
Solutions.
The APU may remain in operation while the aircraft is pressure re-fueled. True or
False? Answer- True
APU generator output is isolated from the bus bar system with external power
connected and switched on. True or False? Answer- True
The main aircraft batteries are _____ volt, _____ amp hour batteries. Answer- 24V,
25 or 28 amp hr.
How are the aircraft batteries charged? Answer- By either the engine generator,
APU generator, or external power
Explain the difference between the battery switch "ON" and the battery switch "BATT
EMERG" position. Answer- ON = the #1 battery supplies voltage to both emergency
contactors ; EMERG = each battery supplies voltage to its respective emergency
contactor and the battery charge contactors are forced open.
What is the purpose of the BATTERY ISOLATE switch? Answer- To isolate a single
battery from its charging source.
What is the purpose of the BUS TIE? Answer- To connect or isolate electrical power
between the PS1 and PS2 buses.
For external starts, a ground power unit capable of supplying _____ volts DC; a short
term capability of _____ amps, and fitted with a ______ amp current limiter must be
used. Answer- 28V; 1500A, 1100A
When charging the aircraft batteries off ground power, the EXT BATT CHG switch
should be selected off when the charge current drops to less than _____ amps.
Answer- 5A (NiCad batteries only)
The bus tie contactor will open when the voltage sensed on the PS1 bus bat
exceeds _____ volts or drops below _____ volts. Answer- 29.5; 24.5
What is the purpose of the stand-by inverter? Answer- To provide power to the XE
bus, captain's instruments, in the event of failure of the XS1 bus
, Two ____ or _____ VA static inverters are fitted in the rear bay and under normal
operation supply _____ V, _____ Hz for aircraft AC powered equipment. Answer-
J.E.T. or British Leyland
115V, 400Hz
When is the battery capacity check recommended prior to engine start? Answer-
Before an external power start.
Following a dual generator failure, approx. _____ minutes of battery power should be
available? Answer- 30 minutes (800XP) / 60 minutes (800)
When the APU generator is on line, it energizes bus bars: ________, _________,
and _______, and connects the number ______ battery to its charge circuit.
Answer- PS1, PE, and PE2
#2
Based on the previous question, which switch must be activated to connect the other
battery to its charge circuit? Answer- Bus Tie (closed)
During the external battery charging, a bus bar protection unit monitoring bus bar
voltage will open both battery contactors to disconnect battery charging if bus bar
voltage is above _____V or below _____V. Answer- 29.5; 24.5
Under normal conditions, the #1 inverter powers _____ and ______ bus bars and
the #2 inverter powers the _____ bus bar. Answer- XS1 and XE
XS2
What are the cockpit indications associated with an engine fire/overheat warning?
Answer- A bell and 6 (or 7) lights (800XP) / 5 lights (800)
In the event of dual generator failure with loss of power to the PS2 bus, there will be
a maximum of _____ shot(s) from the fire protection system to each engine.
Answer- 1
The RUDDER BIAS system is required to be operational for dispatch. True or False?
Answer- True
What is the purpose of the lift dump system? Answer- To shorten landing distance
Which flight controls are hydraulically operated? Answer- Flaps and airbrakes
Stall warning is provided by the _______ ________. Answer- stick shaker
What is the purpose of the rudder bias system? Answer- To assist the pilot in
maintaining directional control in the event of an engine failure.
Flaps at the 15° position and small inputs of airbrakes are recommended for descent
in icing conditions to prevent speed build up. True or False? Answer- False
