Electrical System

Question 0

What are the DC power componenets

Answer 0

• Starter/generators
• Battery, relay, battery feeder protection
• External power receptacle and relay
• DC controls and indicators

Question 1

What is the primary source of power for most aircraft operations

Answer 1

DC power

Question 2

Generators supply primary ___DC power for the DC power system

Answer 2

28 VDV

Question 3

Generators require ____%N2 to provide rated generator output

Answer 3

58%

Question 4

What allows both generators to equally share the load

Answer 4

equalization circuit in the generator control unit (GCU)

Question 5

What are the specifications of the aircraft battery

Answer 5

24 Volt, 40 amp-hour, lead acid battery

Question 6

What are the uses of the aircraft battery

Answer 6

Secondary electrical power for

• Ground operations
• Engine Starting
• Emergency operations

Question 7

What is required for the starter generators to provide the rated generator power output

Answer 7

58% N2

Question 8

What is the DC standby power source

Answer 8

24 VDC lead acid battery

Question 9

What does the AHRS battery power subsystem consist of

Answer 9

• 24 VDC lead acid AHRS auxiliary battery
• 2 AHRS battery test switches
• an annunciator

Question 10

The AHRS battery is capable of providing 24 VDC to both AHRS computers for up to ______minutes

Answer 10

11

Question 11

What is powered when the battery switch is in the EMER position

Answer 11

Emergency bus
Standby bus
Standby battery

Question 12

If the inverter selector switch is in AUTO the #1 inverter provides power to ______buses and the #2 inverter provides power to ____buses

Answer 12

Primary, Secondary

Question 13

What is on the Standby bus

Answer 13

Copilot instrument lights
UFH
Standby altimeter
Standby attitude indicator
Engine EFC start
RTU 1
LH ITT

Question 14

What are some key components on the EMERGENCY BUS

Answer 14

Emergency landing gear position
Emergency pitch trim
Copilot clock
(ADD MORE)

Question 15

in case of total electrical failure the standby bus provides electrical power to the standby attitude indicator and other standby instruments for approximately _____minutes

Answer 15

30

Question 16

What are the important components on the emergency bus?

Answer 16

Cabin smoke detector
Select engine instruments (N1,N2)
Landing gear position lights
Emergency lights
Emergency pitch trim
VHF 1
Engine fire extinguishers
Standby bus

Question 17

What charges the standby battery?

Answer 17

The emergency bus

Question 18

When operating under battery power only, placing the BATTERY switch to EMER will cause the battery to power what?

Answer 18

Emergency bus
Standby bus
Standby battery

Question 19

Under what circumstances will you lose the AC bus shed?

Answer 19

No. 2 Inverter powering primary AC bus

No. 2 Inverter receiving DC power from the emergency bus