SV Electrical Flashcards
T or F
The Bus Power Control Units (BPCU) provide dynamic electrical load management
when the airplane is operating on any available electrical power source. [8.60.10]
A. True.
If the permanent magnet alternator for the left engine EEC is not available, the EEC
receives power from the: [8.60.10]
D. Airplane’s115V ac system.
T or F
When starting an engine using external power to energize the starters, a minimum of two
electrical sources are required. One of these MUST be AFT external power. [8.60.10]
B. False.
The ground handling mode is powered __ if no other power source is available. [8.60.10]
B. Automatically when either FWD external power is connected (AVAIL)
The generator drive may disconnect automatically: [8.60.10]
D. Depending on the fault condition detected.
Circuit breaker status is always available: [8.60.10]
D. On the CBIC (circuit breaker indication and control).
The permanent magnet generators (PMGs): [8.60.10]
C. Power the flight control electronics.
The main battery provides power to the following: [8.60.10]
A. Electric braking (as backup source).
B. Captain’s flight instrument bus until RAT deployment
C. L VHF communications.
D. All of the above.
When the FWD or AFT external power switches are illuminated “AVAIL”,
they indicate: [8.60.20]
B. External power is plugged in and power quality is acceptable.
T or F
Thermal circuit breakers may be reset via CBIC as long as the pilots accomplish
the Unannunciated Circuit Breaker supplementary procedure? [8.60.20]
B. False
The RAT will deploy automatically in flight if: [8.60.10]
D. All electrical power to the Captain and F/O’s flight instruments is lost.
When on the ground prior to engine start and the Hydraulic Electric Demand pumps
are selected to AUTO, the pumps do not operate. This function is called: [8.60.10]
D. Load Inhibit.
T or F
If a total electrical failure occurs in flight, the PMGs provide Standby Power until RAT
deployment. [8.60.10]
B. False.
During automatic load shedding, which of the following indications may display?
[8.60.10]
A. LOAD SHED is displayed next the affected equipment symbol on the
appropriate system synoptic.
B. A list of affected airplane systems displays on the electrical synoptic.
D. Both A and B are correct.
In flight, with only one starter generator available: [8.20.20]
A. All CACs shut down.
C. Power remains available to critical and essential equipment.
D. A and C are correct.