Elec

Question 1

How many main generator?

Answer 1

3

Question 2

Any 1 generator has sufficient capacity to supply all essential flight loads. True or False?

Answer 2

True

Question 3

When the right engine starts and APU is off, Which systems are powered by the IDG?

Answer 3

Both right and left main buses

Question 4

Both ext power is ON. Then Apu is ON. Which will happen?

Answer 4

Left main bus start to be powered by APU.

Question 5

You have unpowered airplane.

Answer 5

Battery bus powered

Question 6

Power is removed from which items when the battery switch is pushed off?

Answer 6

Left AIMS, Cpt displays and CDU , Standby Instruments bus

Question 7

What ground handling bus powers?

Answer 7

Cargo doors, cargo compartment lights and maintenance access lights.

Question 8

Ground service bus powers

Answer 8

Cabin lights and outlets, Main and Apu battery chargers, LEft forward Fuel pump

Question 9

What the Cabin utility powers?

Answer 9

utilities such as

Question 10

How many batteries ?

How many TRU ? Where they supply energy?

What if TRU failure happens?

Answer 10

2. APU and Main
3. L and R main DC bus , Cpt anf F/O Flt Inst. Bus

Bus tie brakers automatically feed other system

Question 11

Back up generator source time limit?

Answer 11

Non-time limited source.

Question 12

What is the power source of flight controls?

Answer 12

PMG (Permenant Magnet Generators)

Question 13

What if the PMG fails?

Answer 13

DC buses supply energy to flight controls. If it is also fails hot battery bus feeds and addition to them one minute battery is at the each 3 of FCDC bus

Question 14

What is the electrical configuration during Autoland?

Answer 14

3 independant sources. Right back up generator will be in use too

Question 15

What is the primary source of DC power during normal operation?

What provides DC power on this airplane?

Answer 15

TRU

Question 16

What is primary power source for fly-by-wire system?

Answer 16

Permenant Magnet Generators

Question 17

With no external power available, how can you power the ground handling bus after engine shutdown?

Answer 17

Start the APU

Question 18

Synoptics are not available in the airplane in standby mode. True or False?

Answer 18

True

Question 19

Only 1 backup generator at a time can power the transfer buses. True or False ?

Answer 19

True

Question 20

Autoland is possible with 1 main generator and 1 back up generator operating. True or False?

Answer 20

True.

Question 21

What is this EICAS message indicates?

Answer 21

Question 22

q

Answer 22

a

Question 23

APU cooldown period?

Answer 23

105 sec

Question 24

What is this EICAS means?

Answer 24

Question 25

EICAS

Answer 25

Reason

Question 26

Loss of all generators, APU switches ON automatically even the switch in OFF position. True or False?

Answer 26

True

Question 27

Test

Answer 27