M11c6⚡️

مقطع من الاغاني عراقيه قصيره · 30問 · 2ヶ月前

通報

問題一覧

when a battery installation is carried out

The acid trap must be drained at regular intervals

If, during flight, a DC generator fails, the pilot will get an indication of

negative current on the ammeter gauge, reducing voltage and a red warning light

When checking the specific gravity of lead-acid battery electrolyte, the temperature must be taken into account because higher temperature results in a

lower density of the electrolyte

What electrical faults will not always trip the GCR

under-frequency and under -voltage

After load shedding from an electrical bus bar the bus bar voltage

remains unchanged and current consumption decreased

To adjust the voltage output of a vibrating-contact type voltage regulator, the

contact spring tension is adjusted

The amount of current which flows into the battery. while it is being charged by constant voltage charge is determine by the

level of charge of the battery

The oil inside a constant speed unit

provides hydraulic function for the CSD as well as cooling and lubrication

If a ground power plug is withdrawn from the socket with the circuit still live

no damage will be done because the external power relay will de-energize automatically before the main pins are disconnected

The sensing element of a load sharing circuit use what type of transformer?

A current transformer

A frequency wild generator may damage

capacitive and inductive components

If the current output of a generator is doubled. The heating loss in the generator will be

quadrupled

Which AC generator provides two voltage options?

star configuration

If the load on the generator increases, in order to provide the increased demand, a voltage regulator using a pulse width modulation will

increase the pulse width

A ‘freewheel diode’ on a relay is to

provide protection from induced current when the contactor is opened

In a multi-generator paralleled electrical load distribution system Reactive load sharing is activated by adjustment of generator

excitation

A constant speed drive, or Integrated Drive Generator (IDG), will be automatically disconnected in the event of

high oil temperature or low oil pressure

Interpol's on DC generator are

the opposite magnetic polarity as the proceeding main poles (in direction of rotating of armature

The point of regulation of a brushless PMG type generator is at the

main generator stator

When a ni-cad battery is fully charged

the electrolyte level is higher level than normal

A diode connected across a coil will

prevent the coil being fitted the wrong way

In a brushless PMG generator the rotating rectifier between

exciter armature and main generator field

The distilled water should be added to Nickel-cadmium ni-cad battery

only in the work shop

Overflowing electrolyte in a ni-cad battery indicates

excessive charging current

In an under volt condition in AC generator system, the most likely consequent is

activation of the time delay circuit.

Abnormal CSD operation is monitored on the flight deck by observing indication of

high oil temperature / low oil pressure

Zener diodes are used as

voltage regulators

In the event of complete AC generator failure, power is maintained to the essential AC bus-bar

by power fed from a battery supplied static inverte

What control for the output from the generator?

GCU

A neutralizing agent for sulphuric acid

Sodium bicarbonate

The purpose of an inverter is to convert

DC to AC

An IDG Integrated drive generator

incorporates the alternator and the CSD as one unit

In a 3 phase system there are three power wires, each

120 out of phase with each other

The open-circuit voltage of the Mercury Cell is

1.4 volts

the advantage of lead acid battery over the normal flooded type is

less maintenance

One major difference between lead-acid batteries and NI-Cad batteries is that a defective cell in a NI-Cad battery

can be change independently

The electrolyte in Nickel-cadmium is a solution of potassium hydroxide and distilled water with a relative density of

1.24-1.3

Generator fields are self-excited. This means that the field current comes from

the armature

In the delta connection, line voltages are equal to

phase voltage

Where dose Generator control unit(GCU) gets its power from

PMG

To flash a generator field the

generator must be stationary

Differential protection in a generating system

detects current difference between source and load

A voltage regulator installed in series with a generator field

uses a voltage coil in parallel with generator output

Electrical load on aircraft is controlled by A

Bus Power Control Unit BPCU

In a transistor voltage regulator, the voltage output is controlled by

Zener and transistors

In a carbon pile regulator, the resistive element is

in series with the field and changes resistance with surface area contact

One of the main purposes of a CSD is

to enable generators to be paralleled

The output of magnetic amplifier normally contains a

saw tooth AC ripple component

M11c1

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