Hydraulic Systems

Question 1

The center hydraulic system has an isolation function which: [8.130.10]
A. Ensures the pilots can lower the landing gear.
B. Allows nose gear steering to be operational for landing, rollout and taxi.
C. Ensures hydraulic operation of the flap and slats.
D. A and B are correct.

Answer 1

D. A and B are correct.

Question 2

Normal brakes are powered: [8.140.10]
A. Hydraulically by the right system.
B. Hydraulically by the center system.
C. Electrically.
D. By the PMGs.

Answer 2

C. Electrically.

Question 3

The Center Demand pump operates: [8.130.10]
A. On the ground for the first three minutes after the second engine is started.
B. During takeoff roll and gear retraction.
C. When flaps and slats are in motion.
D. All the above.

Answer 3

D. All the above.

Question 4

The left hydraulic system powers which systems? [8.130.10]
A. Alternate & Reserve brake system.
B. Flaps and Slats.
C. Some flight controls and left engine thrust reverser.
D. Stabilizer Trim.

Answer 4

C. Some flight controls and left engine thrust reverser.

Question 5

One hydraulic system provides adequate airplane control. [8.130.10]
A. True.
B. False.

Answer 5

A. True.

Question 6

With the left or right hydraulic demand pump selectors in the AUTO position,
which of the following is true? [8.130.10]
A. Pumps operate from takeoff thrust set to flaps retracted.
B. Pumps operate for three minutes after second engine is started.
C. Pumps operate during thrust reverser operation.
D. All the above.

Answer 6

D. All the above.

Question 7

Which hydraulic pump(s) may be shed to allow the electrical system to provide
power to other systems? [8.130.10]
A. Center Demand Pump.
B. Left Demand Pump.
C. Right Demand Pump.
D. All of the above.

Answer 7

D. All of the above.

Question 8

The hydraulic isolation system ensures: [8.130.10]
A. Stabilizer trim operation.
B. Pressure to the Reserve Brakes.
C. Landing gear can be lowered and nose wheel steering operates.
D. Pressure to the Normal Brakes.

Answer 8

C. Landing gear can be lowered and nose wheel steering operates.

Question 9

Which of the following will cause the RAT to deploy automatically in flight? [8.130.10]
A. Loss of two electric motor pumps (EMP).
B. Loss of electrical power to the FOs flight instrument bus.
C. Loss of any two engine starter generators.
D. Left, Center, and Right Hydraulic pressure low.

Answer 9

D. Left, Center, and Right Hydraulic pressure low.

Question 10

What component(s) does the RAT hydraulically power? [8.130.10]
A. Alternate gear extension system.
B. Normal brakes (after landing and airspeed below 60 knots).
C. Primary flight control components normally powered by the center hydraulic
system.
D. Flaps and Slats.

Answer 10

C. Primary flight control components normally powered by the center hydraulic
system.

Question 11

All 3 hydraulic systems will provide up to 4000 psi per system, L,C,R.? [8.130.10]
A. True.
B. False.

Answer 11

B. False.

Question 11

What happens if both the C1 and C2 Pump selectors are positioned to ON at the
same time? [8.130.20]
A. Both pumps will run continuously.
B. Only the C2 pump will operate.
C. Only the C1 pump will operate.
D. Both the C1 and C2 pumps will operate only if the gear is extended.

Answer 11

A. Both pumps will run continuously.

Question 12

Which of the following components are powered by the right hydraulic system?
[8.130.10]
A. The Ram Air Turbine.
B. Some flight controls.
C. Right engine thrust reverser.
D. Both B and C are correct.

Answer 12

D. Both B and C are correct.

Question 13

The Ram Air Turbine (RAT) must be manually deployed? [8.130.10]
A. True.
B. False.

Answer 13

B. False.

Question 14

The primary hydraulic pump FAULT lights illuminate (amber) when the following
occurs: [8.130.20]
A. Low primary pump pressure.
B. Excessive primary pump fluid temperature.
C. Pump Selector to OFF.
D. All the above.

Answer 14

D. All the above.

Question 15

In the AUTO position, the right hydraulic system demand pump: [8.130.10]
A. Operates from takeoff thrust set to flaps retracted.
B. Operates when system, or primary pump pressure is low.
C. Operates with right thrust reverser deployment.
D. All of the above.

Answer 15

D. All of the above.

Question 16

Where would you find hydraulic quantity indications? [8.130.20]
A. Secondary Engine Instruments.
B. Status Display.
C. Hydraulic Synoptic.
D. Both B and C.

Answer 16

D. Both B and C.