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Systems1 > Electrical > Flashcards

Electrical Flashcards

1
Q

he primary AC electrical system is powered by ______ engine driven _____ generators

A

3, Integrated drive

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2
Q

Each AC generator supplies power to its respective bus through a _____

A

Generator control breaker

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3
Q

The normal frequency range of the AC system is _____HZ cycles

A

400 +/- 5

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4
Q

The normal voltage range of the AC system is _____ volts

A

190-210 volts

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5
Q

The caution voltage range of the AC system is _____ or _____volts

A

180-190 or 210-220 volts

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6
Q

The minimum voltage of the AC system is _____ volts

A

118 volts

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7
Q

The maximum voltage of the AC system is _____ volts

A

220 volts

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8
Q

The maximum permissible AC ammeter reading is _____ amps

A

116 amps

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9
Q

The minimum AC frequency reading is ___ Hz

A

380Hz

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10
Q

Caution range for AC frequency is _____ or _____

A

380-395Hz or 405-420Hz

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11
Q

Maximum permissible AC frequency reading is ____Hz

A

420Hz

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12
Q

With no AC electrical power on the aircraft and the battery switch in Emergency, the switched DC is power by _____

A

The Battery

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13
Q

Do not reset any ______ fuel boost pump or fuel override pump CBs if open until proper inspections and/or repairs have been made

A

115/200 volt AC

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14
Q

With AC power available to the #3 generator bus, the DC voltmeter will read ______ voltage with the DC ammeter and voltmeter selector in the main battery position

A

Battery charging TR

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15
Q

Never attempt to work on equipment using AC power. Touching any one wire while in contact with the aircraft can ___

A

Result in Death

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16
Q

hen generators are operating in parallel, the AC frequency meter displays the

A

average frequency of the paralleled generators

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17
Q

IDG Fail Light illuminates when oil cooler temperature reaches ______ degreees F or oil pressure drops to ___psi

A

400+/-10, 100

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18
Q

IDG Fail Light goes out when oil temperature decreases to _____ degrees F or oil pressure increases to ____psi

A

370+/-10, 180

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19
Q

IDG Disc Light illuminates when input speed is below ____rpm after disconnect switch actuated

A

4200+/-30

20
Q

Airplane 28 volt DC power is provided by ______ as a primary source and by _____ as the secondary source

A

2 transformer rectifiers, 2 batteries

21
Q

The aircraft is equipped with two ______ 35-amp hour sealed lead-acid maintenance free batteries located in the toilet compartment

A

24-volt

22
Q

TR bus #1 supplies power to the switched DC bus when the Battery Switch is in the ______ position

A

NORMAL

23
Q

When using the battery charging TR to power the switched DC bus, the time limit is ___

A

Unlimited

24
Q

Normal operating voltage for TR one and two __

A

24-30 VDC

25
Q

Normal operating voltage for the batteries is

A

24-29 VDC

26
Q

Normal DC loadmeter reading is

A

0 to 1

27
Q

f the light on the battery switch illuminates, it is an indication that ____

A

The switched DC bus is not powered

28
Q

When these conditions are satisfied, the voltmeter displays the selected battery’s charging TR unit voltage

A

The DC POWER SELECTOR switch is in the APU BATT or MAIN BATT position with AC power available

29
Q

To check that TR1 and TR2 are functioning properly during taxi

A

Use the DC POWER SELECTOR and ensure the TR1 and TR2 loadmeter readings are balanced.

30
Q

TR Fail illuminates when

A

TR BUS TIE becomes energized (A TR fails)

31
Q

Main battery is charged off __

A

3 generator bus

32
Q

The APU battery charging TR unit has a continuous output of ____ amps

A

25

33
Q

To disengage the APU battery, the battery switch needs to be in ______ or _____

A

EMER, NORMAL

34
Q

The APU installation has a single ____ KVA generator

A

25 KVA

35
Q

The copilot’s instrument power generator is powered by ____

A

A 1 KVA generator powered by the right HYD system

36
Q

the copilot’s instrument power generator output drops below 90 volts AC, the copilot’s instruments can be powered by the _____

A

Main electrical system

37
Q

If the copilot’s instrument power off light comes on or the copilot’s instruments are operating erratically, set the copilot’s instrument power switch to ____

A

EMERGENCY

38
Q

This generator has its own transformer-rectifier

A

CIPS

39
Q

CIPS Gen OFF light illuminates when CIPS output <___VAC

A

90 VAC

40
Q

Each IDG is mounted on the accessory gearbox of its respective engine and receives power from the ____

A

N2 Turbine

41
Q

The IDG governor maintains basic frequency regulation during isolated generator operation. When generators are paralleled the ______ can adjust the IDG speed governor, which adjusts generator frequency

A

GCU

42
Q

Prior to checking or changing fuses, turn off affected equipment, then ____

A

Open applicable CBs

43
Q

To isolate a generator, momentarily set the ____ to trip

A

BTB

44
Q

When generators are paralleled, a difference in _____ readings may indicate a generator malfunction

A

Ammeter

45
Q

The bus power control unit provides control of ______

A

External power application

46
Q

What are the external power source limits (volts/Hz)

A

200 +/- 10 V and 400 +/- 5 Hz

Systems1 (7 decks)

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