Learjet 20 Series Pilot Training Manual page 43

1. The systems powered directly from the
battery bus with the airplane battery
switches in OFF are:
A. Fuel shutoff valves, door motor, and
entry lights
B. Shutoff valve (pinhead) lights, door
motor, left and right stall warning sys-
tems, and entry lights
C. Fuel and hydraulic shutoff valves,
shutoff valve (pinhead), door motor,
and entry lights
D. F i r e - ex t i n g u i s h i n g s y s t e m , d o o r
motor, entry lights, and shutoff valve
(pinhead) lights
2. It is possible to charge the batteries in the
airplane if:
A. A GPU is plugged in.
B. A GPU is plugged in with less than 33
±2 VDC on the small pin.
C. Both battery switches are on and a
GPU is plugged in with less than 33
±2 VDC on the small pin.
D. The battery switches are off and the
starter-generator switches are in GEN.
3. GPU output should be limited to a max-
imum of:
A. 600 amperes
B. 800 amperes
C. 1,000 amperes
D. 1,100 amperes
4. Each of the ammeters indicates the cur-
rent produced by its respective generator.
The DC voltmeter indicates:
A. Voltage on the battery bus
B. Voltage on the essential bus
C. Voltage on the main bus
D. Voltage on the battery charging bus
2-16
LEARJET 20 SERIES PILOT TRAINING MANUAL
QUESTIONS
FOR TRAINING PURPOSES ONLY
5. The maximum voltage (red line) value
on the DC voltmeter is:
A. 24 VDC
B. 28 VDC
C. 35 VDC
D. 33 ±2 VDC
6. The maximum (red line) amperage on the
ammeter is:
A. 400 amperes
B. 600 amperes
C. 800 amperes
D. 1,000 amperes
7. If a generator trips off the line, the cock-
pit indications are:
A. Battery voltage on the DC voltmeter
B. Zero amperes and an illuminated gen-
erator fail light
C. Both an illuminated generator and in-
verter fail light
D. An illuminated generator fail light
and indicated battery voltage
8. Minimum battery voltage for engine start
is:
Nicad
A. 16
B. 24
Lead Acid (up to 70°F)
A. 16
B. 23
9. If both generators fail in flight, two fully
charged batteries supply power for:
A. Only DC equipment
B. Approximately 1 hour
C. Approximately 30 minutes
D. A short period of time
FlightSafety
international
C. 23
D. 28
C. 24
D. 28