Electrical

Question 1

The primary challenger electrical system is?

Answer 1

115 volt AC

Question 2

A constant generator speed is ensured by the?

Answer 2

CSD

Question 3

The number of AC generators is?

Answer 3

4

Question 4

Emergency in-flight AC power is provided by?

Answer 4

ADG

Question 5

The CSD oil quantity is checked by?

Answer 5

Viewing a sight glass

Question 6

On the ground, AC power can be supplied by the engines or by a?

Answer 6

APU Generator

Question 7

If the ADG is inadvertently deployed, it can be retracted?

Answer 7

Only on the ground

Question 8

If the GEN 1/2 OVLD CAS message illuminates:

Answer 8

Generator load has exceeded 34.5kva

Question 9

Primary DC power is supplied by:

Answer 9

TRU

Question 10

What is the voltage of the AC electrical system?

Answer 10

115 volt

Question 11

What is the voltage of the DC electrical system?

Answer 11

28 volt

Question 12

What supplies the primary source of AC electrical power?

Answer 12

Engine-Driven Integrated Drive Generators (IDG’s)

Question 13

What is the normal rating of each generator?

Answer 13

30 kilovolt-amperes to 35,000ft (25kva to 41,000ft)

Question 14

The engine generator is tripped off and removed from the AC buses when?

Answer 14

Over/ under voltage
Over/ under frequency
Generator and bus over current

Question 15

What is the rating of the APU generator?

Answer 15

30kva from sea level up to the APU’s maximum operating altitude of 20,000ft

Question 16

The aircraft AC bus system consists of how many buses?

Answer 16

5
AC BUS 1
AC BUS 2
AC ESS BUS
AC UTILITY BUS 1
AC UTILITY BUS 2

Question 17

The bus priority logic for AC BUS 1 and AC BUS 2 is?

Answer 17

On side engine driven generator
APU Generator
Cross side engine driven generator
External AC Power

Question 18

The flight crew can manually inhibit the automatic bus transfer priority logic by pressing what?

Answer 18

AUTOXFER (eg. electrical smoke or fire)

Question 19

The ADG provides power to what?

Answer 19

AC ESS BUS and 3B hydraulic pump

Question 20

How much power does the ADG provide?

Answer 20

115 volt, 400hz, 15kva

Question 21

Automatic deployment of the ADG occurs when?

Answer 21

Both AC BUS 1 and AC BUS 2 become unpowered
The aircraft is in flight

Question 22

Cobham operate which ADG?

Answer 22

Dry ADG
Maintains a constant speed using a counterweight system
Deploys via a solenoid in the uplock system
No airspeed limitation

Question 23

The DC electrical system is made up of what?

Answer 23

4 x TRU’s
2 x Nicad batteries
An external DC power receptacle

Question 24

How many buses does the DC Electrical system consist of?

Answer 24

9
DC BUS 1
DC BUS 2
DC ESS BUS
DC EMER BUS
BATT BUS
DC UTIL BUS 1
DC UTIL BUS 2
Main battery direct bus
APU Battery direct bus

Question 25

Each TRU is rated at?

Answer 25

100amps

Question 26

The four TRU’s are identified as:

Answer 26

TRU 1 TRU 2 ESS TRU 1 ESS TRU 2

Question 27

TRU 1 supplies what?

Answer 27

DC Bus 1 and DC UTIL BUS 1

Question 28

TRU 2 supples what?

Answer 28

DC Bus 2 and DC UTIL BUS 2

Question 29

ESS TRU 1 supplies what?

Answer 29

DC ESS BUS and DC BATT BUS

Question 30

ESS TRU 2 supplies what?

Answer 30

DC ESS BUS and DC BATT BUS

Question 31

If either TRU fails, both buses can be supplied by either TRU by selecting what?

Answer 31

MAIN BUS TIE switch/ light

Question 32

If both ESS TRU’s fail in flight, what will power the DC ESS BUS?

Answer 32

APU BATT DIR BUS through the solid state contactor

Question 33

The main battery is what voltage/amperage?

Answer 33

24 volt, 17 amp hour

Question 34

The APU battery is what voltage/ amperage?

Answer 34

24 volt, 43 amp hour

Question 35

How many circuit breaker panels are there?

Answer 35

5

Question 36

CBP 1 controls?

Answer 36

AC BUS 1 BC BUS 1 BATT BUS CBP 1 LOWER = EMERGENCY

Question 37

CBP 3 contains what?

Answer 37

AC ESS BUS

Question 38

IDG’s provide what output?

Answer 38

115v, 400hz, 3 phase

Question 39

The generator is rated to what altitude?

Answer 39

30kva to 35,000, 25kva to 41,000

Question 40

APU altitude rating?

Answer 40

30kva to 20,000ft

Question 41

The generator trips when?

Answer 41

Over/ under voltage Over/ under frequency Generator and bus overcurrent

Question 42

Bus priority logic?

Answer 42

Onside IDG APU Cross side IDG External power

Question 43

ADG provides what power output?

Answer 43

115 volt, 400hz, 15kva

Question 44

The ADG powers what?

Answer 44

AC ESS BUS and 3B hydraulic pump

Question 45

Each TRU provides?

Answer 45

100amps

Question 46

Main battery?

Answer 46

24volt, 17amp/hr

Question 47

APU battery?

Answer 47

24 volt, 43amp/hr

Question 48

DC system is capable of charging batteries between what percentages?

Answer 48

30-100%

Question 49

Ignition A is powered by

Answer 49

AC ESS BUS

Question 50

Ignition B is powered by

Answer 50

DC BATT BUS

Question 51

START is powered by

Answer 51

DC BATT BUS

Question 52

Thrust reverser powered by

Answer 52

DC ESS BUS

Question 53

L Oil pressure powered by

Answer 53

DC BATT BUS

Question 54

R Oil pressure powered by

Answer 54

DC ESS BUS

Question 55

PIlot’s PFD/MFD powered by

Answer 55

DC ESS BUS

Question 56

Copilots PFD/MFD powered by

Answer 56

DC BUS 2

Question 57

ADC 1 powered by

Answer 57

DC ESS BUS

Question 58

ADC 2 powered by

Answer 58

DC BUS 2

Question 59

IRS 1 powered by

Answer 59

DC BATT BUS AND AC ESS BUS

Question 60

IRS 2 powered by

Answer 60

DC ESS BUS AND AC BUS 2

Question 61

ATC 1 is powered by

Answer 61

DC ESS BUS

Question 62

ATC 2 is powered by

Answer 62

DC BUS 2

Question 63

FMS 1 powered by

Answer 63

DC BUS 1

Question 64

FMS 2 powered by

Answer 64

DC BUS 2

Question 65

GPS 1 powered by

Answer 65

DC BUS 1

Question 66

GPS 2 powered by

Answer 66

DC BUS 2

Question 67

Weather radar powered by

Answer 67

DC BUS 1

Question 68

TCAS powered by

Answer 68

AC ESS BUS