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777 SV > HYDRAULICS > Flashcards

HYDRAULICS Flashcards

1
Q

The right hydraulic system powers _____.

A. the right reverser only
B. some flight controls, both thrust reversers and reserve brakes
C. some flight controls, the right thrust reverser and normal brakes
D. some flight controls and both thrust reverser

A

C. some flight controls, the right thrust reverser and normal brakes

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2
Q

Flight control system components are distributed so that _____ can provide adequate airplane control.

A. any one pneumatic system, with the RAT deployed
B. only the center or right hydraulic system
C. only the left or right hydraulic system
D. any one hydraulic system

A

D. any one hydraulic system

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3
Q

Regarding the Center Hydraulic System, what pumps provide supplementary power for periods of high system demand or when primary pressure is low?

A. Two electric motor driven primary pumps.
B. C1 and C2 air demand pumps.
C. Ram Air Turbine pumps.
D. C2 primary pumps.

A

B. C1 and C2 air demand pumps.

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4
Q

What occurs if the center hydraulic system quantity is sensed to be low and airspeed is greater than 60 kts?

A. The reserve brakes are isolated from the center system and remain operable.
B. The leading edge slats continue to operate in the primary mode.
C. The reserve fluid is isolated to the main gear wheel stearing, nose gear steering, and leading edge slats.
D. The C1 pump and reserve fluid are dedicated to operating the main gear operation.

A

A. The reserve brakes are isolated from the center system and remain operable.

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5
Q

The FLT CONTROL HYD VALVE POWER switches on the Overhead Maintenance Panel are used only _______.

A. on the ground by maintenance
B. in the event of complete failure of a hydraulic system
C. in fllight with TOMC approval
D. in the event of hydraulic pressure fluctuations affecting airplane control.

A

A. on the ground by maintenance

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6
Q

With AC power ON and the right demand pump switch in the AUTO position on the ground, the _______.

A. right demand pump fault light remains on until the engine is running
B. pump runs continuously
C. brake source light remains on until the center system is pressurized.
D. pump operates only when a high demand is anticipated

A

B. pump runs continuously

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7
Q

With their respective switches in the AUTO position, the hydraulic demand pumps operate ______.

A. only with a failure of the primary pumps
B. when the primary pump pressure is low or when high demand is anticipated
C. all times on the ground
D. when the flight control check is accomplished during taxi

A

B. when the primary pump pressure is low or when high demand is anticipated

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8
Q

When a demand pump FAULT light illuminates, it indicates the following ______.

A. high demand pump output pressure and the left demand pump runs continuously until selected OFF
B. high demand pump output pressure, excessive demand pump fluid temperature, or the pump is selected OFF
C. hydraulic pressure to the flight control actuators is shut off and the respective valve is closed
D. low demand pump output pressure, excessive demand pump fluid temperature, or the pump is selected OFF

A

D. low demand pump output pressure, excessive demand pump fluid temperature, or the pump is selected OFF

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9
Q

An RF indication next to the hydraulic quantity indicates that _____.

A. only the Right Hydraulic System is powering the flight controls
B. the RAT has failed
C. the reservoir requires filling
D. the Right Hydraulic Reservoir is full

A

C. the reservoir requires filling

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10
Q

If hydraulic system reservoir is filled to beyond the normal fulll service level, _____ appears on the Status page and HYD synoptic next to the Hydraulic QTY indication for that reservoir.

A. OF
B. RF
C. F+
D EXC

A

A. OF

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11
Q

The left hydraulic system powers _____.

A. some flight controls and the left thrust reverser
B. the left thrust reversers and the normal brakes
C. some flight controls only
D. some flight controls and both thrust reversers

A

A. some flight controls and the left thrust reverser

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12
Q

If deployed, can the RAT be re-stowed in flight?

A. Yes, but only via manual controls in the lower E&E bay.
B. No.
C. Yes, if all normal electric and hydraulic systems have been restored.
D. Yes, by pushing the switch a second time.

A

B. No.

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13
Q

Hydraulic fluid is supplied to each hydraulic system from the respective reservoir. The reservoirs are pressurized by _____.

A. AC power
B. the standby inverter
C. DC power
D. bleed air

A

D. bleed air

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14
Q

The RAT provides hydraulic power to _____.

A. the ALTN gear extension system
B. only those flight controls connected to the left hydraulic system
C. to the primary flight control components connected to the center hydraulic system
D. both thrust reversers

A

C. to the primary flight control components connected to the center hydraulic system

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15
Q

The left and right hydraulic demand pumps are driven by _____.

A. the engines
B. electric motors
C. APU bleed air
D. engine bleed air

A

B. electric motors

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16
Q

One of the conditions that will automatically deploy the RAT in flight is the _____.

A. loss of two generators
B. failure of left and right hydraulic systems
C. loss of any two hydraulic systems
D. failure of both engines and center hydraulic system pressure is low

A

D. failure of both engines and center hydraulic system pressure is low

17
Q

The Primary Electric C1 hydraulic pump FAULT light is illuminated and ON not visible indicates?

A. The C1 Electric Pump Switch is off.
B. A Self-Test
C. Excessive secondary pump fluid quantity.
D. Both C1 and C2 are selected ON rather than AUTO.

A

A. The C1 Electric Pump Switch is off.

18
Q

The RAM AIR TURBINE PRESS light (overhead panel) indicates the RAT is deployed and the _____system(s) flight control hydraulic pressure(s) is(are) normal.

A. center
B. left
C. center and right
D. right

A

A. center

19
Q

The RAT can be deployed manually by using the RAM AIR TURBINE switch _____.

A. only while on the ground
B. and can be retracted when no longer needed
C. only while airborne
D. with the hot battery bus or APU battery bus powered

A

D. with the hot battery bus or APU battery bus powered

20
Q

If center hydraulic system quantity is sensed to be low, the system isolates and removes pressure to the nose gear and steering. The nose gear actuation and steering are reconnected when the airspeed decreases below _____ knots.

A. 99
B. the maximum taxi speed of 30
C. 85
D. 60

A

D. 60

21
Q

In the left and right hydraulic systems, the engine driven pumps receive fluid from the _____.

A. below the standpipe
B. center hydraulic reservoir
C. standpipes
D. demand pumps

A

C. standpipes

22
Q

What does the RAT UNLKD light indicate?

A. RAT deployment
B. RAT operation has failed
C. The RAT is in the stowed position
D. The RAT is not in the stowed position

A

D. The RAT is not in the stowed position

23
Q

Which hydraulic pump(s) can load shed?

A. The primary C2 pump.
B. Both primary C1 and C2 pumps.
C. The demand C2 air pump
D. The primary C1 pump.

A

A. The primary C2 pump.

777 SV (13 decks)

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