Smoke detectors fitted on transport aircraft are of the following type :

A Constant Speed Drive aims at ensuring

Load shedding means .. of electric generators

The services connected to a supply bus-bar are normally in:

The moving part in an AC generator is usually referred to as the :

(For this question use annex 021-10164A) The smoke detection in the aircraft cargo compartments is carried out by four sensors: C1, C2, C3 and C4. They are associated with the logic circuit as described in the annex. The repeating bell is activated when:

The measured output power components of a constant frequency AC system are :

Frequency wild in relation to a AC generation system means the generator :

If the frequency of the supply in a series capacitive circuit is increased, the current flowing in the circuit will :

In an aeroplane utilising a constant frequency AC power supply, DC power is obtained from a :

On an aeroplane utilising AC as primary power supplies, the batteries are charged in flight from :

When operating two AC generators unparalleled, the phase relationship of each generator:

Assuming a CSD fault is indicated, the CSD should be disconnected :

The function of a CSD in an AC generating system is to:

The frequency of an AC generator is dependent on the :

The frequency of an AC generator is dependent upon the :

The function of a constant speed drive (CSD) in an AC generating system is to :

If two constant frequency AC generators are operating independently, then the phase relationship of each generator:

To ensure correct load sharing between AC generators operating in parallel :

A CSD of an AC generator may be disconnected in flight. The primary reason(s) for disconnection are :

A CSD unit which has been disconnected in flight :

When AC generators are operated in paralllel, they must be of the same:

The purpose of a voltage regulator is to control the output voltage of the :

A 3 phase AC generator has 3 separate stator windings spaced at :

On the flight deck, an oil operated CSD unit is normally provided with means of monitoring the:

An AC generator driven by a CSD unit :

The main purpose of a Constant Speed Drive unit is to:

When the AC generators are connected in parallel, the reactive loads are balanced by means of the:

As regards the Generator Contol Unit (GCU) of an AC generator, it can be said that: 1. The GCU controls the AC generator voltage 2. Modern GCUs are provided with a permanent indication to record the failure 3. All the commands originating from the control panel are applied via the GCU, except dog clutch release 4. The Auxiliary Power Unit (APU) provides the excitation of the AC generator as soon as the APU starts up The combination regrouping all the correct statements is :

Smoke detector systems are installed in the

A magnetic circuit- breaker is:

In an aircraft electrical system where AC generators are not paralleled mounted, the changover 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:

As regards three-phase AC generators, the following conditions must be met for paralleling AC generators: 1. Equal voltage 2. Equal current 3. Equal frequencies 4. Same phase rotation 5. Voltages of same phase The combination regrouping all the correct statements is :

Ion detectors are devices used in aircraft for systems protection. They detect :

The Auxiliary Power Unit (APU) has its own AC generator which:

In a turbo-jet, the purpose of the turbine is to ...

(Use the appendix to answer this question) The gas turbine illustrated is of the following type:

On detection of a persistent overvoltage fault on an AC generator connected to the aircraft AC busbars, the on-board protection device opens:

When a persistent top excitation limit fault on an AC generator connected to the mains with another AC generator, the overexcitation protection device opens:

When a persistent overexcitation fault is detected on only one AC generator, the protection device opens the :

When an underspeed fault is detected on an AC generator connected to the aircraft AC busbar, the protection device opens the:

On starting, in a brushless AC generator with no commutator rings, the generator is activated by:

The advantages of alternating current on board an aircraft are: 1. simple connection 2. high starting torque 3. flexibility in use 4. lighter weight of equipment 5. easy to convert into direct current 6. easy maintenance of machines The combination of correct statements is:

In flight, if the constant speed drive (CSD) temperature indicator is in the red arc the:

The most widely used electrical frequency in aircraft is :