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Theory Of Flight > Electrical Exam > Flashcards

Electrical Exam Flashcards

1
Q

3 types of warning

A

Warning, caution, advisory

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2
Q

How to silence an alarm?

A

Momentarily press the attention getter

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3
Q

What is A in the pictures?

A

Ram air turbine.

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4
Q

What is B?

A

Emergency Power Unit

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5
Q

Standard ac voltage

A

24v

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6
Q

What is D?

A

DC generator used for runs electrics and barges battery charges

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7
Q

What is E?

A

Ground power unit 28v & 200v, power batteries and engine starting

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8
Q

What is F?

A

APU, engine starting

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9
Q

What is G?

A

AAPU, electrics, Hyd, air con, can be used on ground and in air.

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10
Q

Function of CSDU?

A

Constant speed drive unit, driven by accessory gearbox, maintains rpm

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11
Q

What does an inverter do?

A

DC-AC

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12
Q

What does a converter do?

A

Changes frequency

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13
Q

What is a TRU?

A

AC input of one voltage to DC output of another, 200AC-28DC

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14
Q

3 types of busbar?

A

Essential, Non essential, Vital

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15
Q

Ac system voltage must be maintained within a set tolerance of?

A

Engine speeds and electrical loads.

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16
Q

How does a voltage regulator work?

A

Stimulates exciter field

17
Q

Standard ac systems are configured to?

A

200v 400hz 3 phase

18
Q

Managing 2 generators in parallel must sense

A

Volt, frequency, phase angle through the FCU

19
Q

Voltage must be maintained between a set range if

A

Engine speeds and electrical loads

20
Q

What is the function of the load sharing control unit?

A

Ensure equal output from each generator

21
Q

System protection

A

Circuit breakers, fuses, RCCOs

22
Q

What component disconnects battery in a crash?

A

Crash switch

23
Q

Most common hyd system?

A

Landing gear

24
Q

Accumulator?

A

Absorbs shocks to the system

25
Q

5 advantages of hydraulics?

A 
Simple and reliable 
Good power to weight
Transmit high forces
Not affected by EM interference 
Rapid and precise
26
Q

Term used to describe increase in strength from hydraulics ?

A

Force multiplication

27
Q

If hyd oil boils?

A

Makes an unacceptable level of gas.

Theory Of Flight (10 decks)

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