Electrical Flashcards
(22 cards)
A good battery should Supply power to the hot battery bus and the emergency bus for approximately:
30 Minutes
The battery bus serves as
A tie bus
In Flight with the generators online, the battery is isolated from any charging Source when the battery switch is in:
A. OFF
B. BATT
C. EMER
D. Both A & C
D. Both A & C (OFF & EMER)
If manual termination of a start sequences desired, the switch to press is:
Starter Disengage
The voltage red on the voltmeter when the selector switch in BATT is sensed from the:
A. Battery bus
B. Left Main bus
C. Hot battery bus
D. Right main bus
C. Hot battery bus
If the generators are not operating, the voltmeter reads battery voltage when the battery switch is in:
A. OFF
B. BATT
C. EMER
D. Both B & C
D. Both B & C ( BATT & EMER)
Delight in each engine start button illuminates to indicate
Closing of the start relay
The generator field relay opens when:
A. An internal feeder fault is sensed
B. An overvoltage condition is sensed
C. An engine fire switch is activated
D. All of the above
D. All of the above
If a battery start is intended, the generator switches should be placed to:
GEN
True or false
One inverter will supply all AC electrical power requirements
True
Elimination of the AC FAIL annunciator light and MASTER WARNING lights indicate:
A. Failure of No. 1 Inverter
B. Failure of No. 2 Inverter
C. Failure of both Inverters
D. Any of the above
D. Any of the above
If both inverters fail:
A. Refer to Pilot’s flight instruments as a land ASAP
B. The flight must be completed in VMC conditions
C. Place battery switch to EMER
D. Place the battery switch to OFF
C. Place battery switch to EMER
to allow an integral inverter contained in the co-pilots C-14D gyro to provide emergency AC power to co-pilot’s CDI needle in VOR mode.
With the battery as the only source of power and the battery switch in the OFF position the buses powered are:
A. Battery bus, hot battery bus
B. Hot battery bus
C. Emergency battery bus, battery bus
D. Emergency bus, battery bus, hot battery bus
B. Hot battery bus
With the battery as the only source of power and the battery switch in the EMER position the buses powered are:
A. Battery bus, hot battery bus
B. Emergency bus, battery bus, hot battery bus
C. Emergency battery bus only
D. Emergency bus, hot battery bus
D. Emergency bus & hot battery bus
With the battery as the only source of power and the battery switch in the BATT position, the following condition exists:
A. All DC buses are powered
B. All buses are powered except the emergency bus
C. Only the left and right main DC buses are powered
D. Only the battery, emergency, and hot battery buses receive power
A. All DC buses are powered
With only the hot battery and emergency buses powered, the following item is inoperative:
A. Cockpit flood lights, emergency exit light
B. NAV 1
C. Co-pilots Compass system, COM 1
D. NAV2
B. NAV 1
The battery switch must be in the________ position before the voltmeter will indicate the voltage of the hot battery bus.
OFF
True or false
With the external power unit connected and the battery switch in OFF, all DC buses are powered by the external power unit except for the battery itself.
False
The engine starting sequence is normally terminated by
The speed sensing switch on the starter generator. (@ 38% N2)
For a generator assisted start, the operating engine must be stabilized at ____ prior to starting the other engine.
49-50% N2
True or false
A failed left 225 ampere current limiter prevents starting of the left engine.
True
