Electrical

Question 1

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

Answer 1

3, Integrated drive

Question 2

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

Answer 2

Generator control breaker

Question 3

The normal frequency range of the AC system is _____HZ cycles

Answer 3

400 +/- 5

Question 4

The normal voltage range of the AC system is _____ volts

Answer 4

190-210 volts

Question 5

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

Answer 5

180-190 or 210-220 volts

Question 6

The minimum voltage of the AC system is _____ volts

Answer 6

118 volts

Question 7

The maximum voltage of the AC system is _____ volts

Answer 7

220 volts

Question 8

The maximum permissible AC ammeter reading is _____ amps

Answer 8

116 amps

Question 9

The minimum AC frequency reading is ___ Hz

Answer 9

380Hz

Question 10

Caution range for AC frequency is _____ or _____

Answer 10

380-395Hz or 405-420Hz

Question 11

Maximum permissible AC frequency reading is ____Hz

Answer 11

420Hz

Question 12

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

Answer 12

The Battery

Question 13

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

Answer 13

115/200 volt AC

Question 14

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

Answer 14

Battery charging TR

Question 15

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

Answer 15

Result in Death

Question 16

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

Answer 16

average frequency of the paralleled generators

Question 17

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

Answer 17

400+/-10, 100

Question 18

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

Answer 18

370+/-10, 180

Question 19

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

Answer 19

4200+/-30

Question 20

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

Answer 20

2 transformer rectifiers, 2 batteries

Question 21

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

Answer 21

24-volt

Question 22

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

Answer 22

NORMAL

Question 23

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

Answer 23

Unlimited

Question 24

Normal operating voltage for TR one and two __

Answer 24

24-30 VDC

Question 25

Normal operating voltage for the batteries is

Answer 25

24-29 VDC

Question 26

Normal DC loadmeter reading is

Answer 26

0 to 1

Question 27

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

Answer 27

The switched DC bus is not powered

Question 28

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

Answer 28

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

Question 29

To check that TR1 and TR2 are functioning properly during taxi

Answer 29

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

Question 30

TR Fail illuminates when

Answer 30

TR BUS TIE becomes energized (A TR fails)

Question 31

Main battery is charged off __

Answer 31

#3 generator bus

Question 32

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

Answer 32

25

Question 33

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

Answer 33

EMER, NORMAL

Question 34

The APU installation has a single ____ KVA generator

Answer 34

25 KVA

Question 35

The copilot’s instrument power generator is powered by ____

Answer 35

A 1 KVA generator powered by the right HYD system

Question 36

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

Answer 36

Main electrical system

Question 37

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 ____

Answer 37

EMERGENCY

Question 38

This generator has its own transformer-rectifier

Answer 38

CIPS

Question 39

CIPS Gen OFF light illuminates when CIPS output <___VAC

Answer 39

90 VAC

Question 40

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

Answer 40

N2 Turbine

Question 41

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

Answer 41

GCU

Question 42

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

Answer 42

Open applicable CBs

Question 43

To isolate a generator, momentarily set the ____ to trip

Answer 43

BTB

Question 44

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

Answer 44

Ammeter

Question 45

The bus power control unit provides control of ______

Answer 45

External power application

Question 46

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

Answer 46

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