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EN Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL - Airline Transport Pilot license
Questions Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL
The difference between (1) a fuse and (2) a circuit breaker is:
When a persistent top excitation limit fault on an AC generator connected to the mains with another AC generator, the overexcitation protection device opens:
The moving part in an AC generator is usually referred to as the:
On detection of a persistent phase imbalance between an AC generator connected to the main bus bars and other AC generators, the protection device that opens is/are the:
The purpose of a battery control unit is generally to isolate the battery 1 - from the bus when the battery charge has been completed 2 - when there is a battery overheat condition 3 - in case of an internal short circuit 4 - in case of a fault on the ground power unit. The combination which regroups all of the correct statements is:
In a generator, the Constant Speed Drive (CSD) 1 - may be disconnected from the engine shaft. 2 - may be disconnected from the generator. 3 - is a hydro-mechanical system. 4 - is an electronic system. 5 - may not be disconnected in flight. 6 - may be disconnected in flight. The combination regrouping all the correct statements is:
In a constant-frequency AC generating system, field excitation of the main generator rotor is supplied directly by:
In an aircraft electrical system where AC generators are not paralleled mounted, the changeover relay allows:
Pulling the fire shutoff handle causes a number of devices to disconnect. In respect of the AC generator it can be said that the:
The speed of an asynchronous four-pole motor fed at a frequency of 400 Hertz is:
