Hydraulics

Question 1

Which systems provide hydraulic power to the stabiliser trim?

Answer 1

Left and center

Question 2

Which system provides hydraulic power to the nose wheel steering?

Answer 2

Center

Question 3

Which system provides hydraulic power to the tailskid ?

Answer 3

Center

Question 4

Which system provides hydraulic power to the flaps?

Answer 4

Center

Question 5

Which system provides hydraulic power to the landing gear?

Answer 5

Center

Question 6

Which system provides hydraulic power to the normal brakes?

Answer 6

Right

Question 7

Which system provides hydraulic power to the left reverser?

Answer 7

Left

Question 8

Which system provides hydraulic power to the rudder ratio changer?

Answer 8

Left

Question 9

Which system provides hydraulic power to the right reverser?

Answer 9

Right

Question 10

Which system provides hydraulic power to the alternate brakes?

Answer 10

Center

Question 11

Which system provides hydraulic power to the hydraulic driven?

Answer 11

Center

Question 12

Which system provides hydraulic power to the main deck cargo door?

Answer 12

Left

Question 13

Which system provides hydraulic power to the yaw damper?

Answer 13

Left and center

Question 14

Which system provides hydraulic power to the pitch enhancement system (PES) ?

Answer 14

Right

Question 15

Which system provides hydraulic power to the slats?

Answer 15

Center

Question 16

What is a normal service quantity of hydraulic fluid (per reservoir)?

Answer 16

1.00

Question 17

How are the hydraulic reservoirs pressurized? How many PSI?

Answer 17

By the bleed air system. 40 PSI.

Question 18

How is operated the primary left and right hydraulic systems pumps?

Answer 18

Engine-driven pump.

Question 19

How are operated the left and right hydraulic systems demand pumps?

Answer 19

Electric motor-driven pump.

Question 20

Why are the electric demand pumps inhibited on the ground during engine start?

Answer 20

For load shedding (when only one electrical generator is operating).

Question 21

For what systems does the center hydraulic reservoir maintain reserve fluid?

Answer 21

A standpipe traps a reserve quantity for the brakes and steering in the event of a center system hydraulic leak.

Question 22

How are operated the center primary hydraulic pumps?

Answer 22

Electric motor-driven pumps (2).

Question 23

How is operated the center hydraulic system demand pump?

Answer 23

Air-driven pump.

Question 24

What happens to the gear and flaps when the air-driven demain pump is inoperative?

Answer 24

The gear retraction and flaps extension/retraction times will be increased.

Question 25

When will the hydraulic driven generator be automatically powered by the center hydraulic system?

Answer 25

When electrical power is lost from both main AC busses.

Question 26

To which system does the RAT provide hydraulic power when deployed?

Answer 26

To the flight controls portion of the center hydraulic system.

Question 27

How is the RAT deployed when both engines fail?

Answer 27

Automatically.

Question 28

Above what speed does the RAT provide adequate hydraulic power?

Answer 28

130kts

Question 29

Can the RAT be stowed in flight ?

Answer 29

No.

Question 30

What is the pressure of the hydraulic systems?

Answer 30

3 000PSI

Question 31

How are the hydraulic fluids cooled?

Answer 31

Through heat exchangers located in the fuel tanks.

Question 32

Below which quantity will the low quantity light illuminate?

Answer 32

0.48

Question 33

What does the reserve brakes and steering switch do when positioned ON?

Answer 33

Provides pressure to alternate brake system and nose wheel steering system.