CBT Quiz Questions Flashcards
When on the ground, auxiliary AC power can be provided by ________.
2 external power sources; 2 APU generators.
Both AC and DC Power Flow are displayed on the Electrical Synoptic Display. (True or False)
False (only AC)
There are ______ IDGs, _____ APU generator(s), and _____ external power source(s) that supply AC power to the B747-400.
4, 2, 2
Disconnecting an IDG is an irrevocable action that can only be reset on the ground. (True or False)
True
External Power and an APU generator cannot both be connected to the same side of the synchronous bus simultaneously. What divides the synchronous bus and allows each side to be powered by two different auxiliary sources?
Split System Breaker (SSB)
Each IDG normally powers its related AC bus through a _________.
Generator Control Breaker (GCB.)
The Ground Handling Bus is never available during flight. (True or False)
True
The Captain Transfer Bus is normally powered by ________.
AC Bus 3
If the Left Utility Power switch is ON, which utility busses are powered?
Utility Bus 1 and Utility Bus 2
The four main DC busses are connected through ____ to the DC tie bus.
DCIR’s (DC Isolation Relays)
There are NO switches or relays to control power to the hot battery busses. (True or False)
True. (Each is directly connected to its associated battery.)
The Electrical Synoptic is inhibited during autoland. (true or false)
True
If AC bus 3 is not powered, the main standby bus will be automatically powered by the _____________.
Main Standby inverter
The Standby Power selector is required to be in the _____ position for the automatic switching of the standby power system.
AUTO
What is the normal Demand Pump Selector position after Engine Start?
AUTO
The hydraulic fluid Shutoff Valve closes when _________.
The related engine fire switch is pulled.
If the engine Driven Pump Switch is turned Off the associated Pressure Light ______________.
Illuminates
The pilot controls the scavenging system. (True or False)
False
Each Main Tank has ____ AC Pumps.
2
If the fuel temperature drops to _______ or below the fuel temperature indicator turns amber.
-37C
When override pump 2 or 3 is armed by the system logic, what color is the pump symbol?
Cyan
APU Fuel is normally supplied from what tank?
Main tank 2
As for normal operations, during jettison, the FSMCs open the reserve transfer valves when main tank 2 or 3 quantity decreases to ____________.
18,200 KG (40,124 lbs)
Fire Extinguishing is provided for the APU, Engines, Lower Cargo Compartments, and Lavatories. (true/false)
True