Hydraulic Flashcards
During the cruise phase of flight, what is the position of the nose landing gear isolation valve?
A. Open
B. Modulating
C. Closed
B. Closed
During a ground engine run you had to operate the right engine fire switch. Which of these are the effects on the right engine-driven pump (EDP) hydraulic shutoff valve and hydraulic system?
A. The shutoff valve closes and the EDP depressurization solenoid energizes
B. The shutoff valve opens and the nose landing gear isolation valve (NLGIV) closes
C. The shutoff valve closes and the right electric motor pump (EMP) stops
A. The shutoff valve closes and the EDP depressurization solenoid energizes
Which of these is a function of the center hydraulic system case drain filter module thermal bypass valve?
A. Let’s hydraulic return fluid bypass the electric motor pump
B. Lets cool hydraulic return fluid bypass the heat exchanger
C. Prevents contamination of the return fluid if a pump drive shaft breaks
B. Lets cool hydraulic return fluid bypass the heat exchanger
What happens when the engine-driven pump (EDP) switches are set to the OFF position?
A. The EDP solenoid gets hot
B. The heat exchangers stop operating
C. Hydraulic fluid in the reservoir overheats
A. The EDP solenoid gets hot
Which conditions are necessary for the fill quantity gage to show the quantity for the right hydraulic system?
A. Electrical power OFF and the 4-position fill selector set to RIGHT
B. Electrical power ON and the 4-position fill selector set to RIGHT
C. Electrical power ON and the R HYD circuit breaker open
B. Electrical power ON and the 4-position fill selector set to RIGHT
How do you retract the ram air turbine (RAT)?
A. Supply right hydraulic pressure and push in the RAT switch on the electrical service panel
B. Use the alternate RAT switch on the P5 panel
C. Supply center hydraulic pressure, put the RAT stow control panel switch to the ON position, and put the GND TEST (ground test) switch to ENABLE position
C. Supply center hydraulic pressure, put the RAT stow control panel switch to the ON position, and put the GND TEST (ground test) switch to ENABLE position
An amber visual indicator on the hydraulic reservoir sight gage shows which of these indication?
A. Reservoir is full
B. Air pressure is to low
C. Reservoir is over-filled
C. Reservoir is over-filled
Which of these is the function of the hydraulic reservoir suction shutoff valve?
A. Opens to supply fluid to the hydraulic pumps
B. Make sure the reservoir pressure stays at 60 psi
C. Make sure the reservoir does not lose all fluid if there is a leak in the system
C. Make sure the reservoir does not lose all fluid if there is a leak in the system
Where is the Ram Air Turbine (RAT)?
A. Left aft wing-to-body fairing, aft of the main landing gear wheel well
B. Left forward wing-to-body fairing, forward of the main landing gear wheel well
C. Right aft wing-to-body fairing, aft of the main landing gear wheel well
C. Right aft wing-to-body fairing, aft of the main landing gear wheel well
When does the ram air turbine (RAT) amber UNLKD light illuminate on the P5 panel?
A. Only when the RAT is manually deployed
B. The RAT is not up and locked
C. The RAT supplies hydraulic pressure
B. The RAT is not up and locked
Which of these is the source of hydraulic fluid for the alternate extend power pack?
A. A return line from the left hydraulic system reservoir
B. A stand pipe in the right hydraulic system reservoir
C. An oversized tube from the center hydraulic system reservoir
C. An oversized tube from the center hydraulic system reservoir
If there is a leak in the center hydraulic system, which component operates to keep fluid isolated for emergency release of the landing gear?
A. Reserve steering isolation valve
B. Alternate extension isolation valve
C. Landing gear priority valve
B. Alternate extension isolation valve
Which hydraulic system electric motor pump (EMP) can operates as primary or demand pump?
A. Right hydraulic system, right EMP
B. Center hydraulic system, C1 & C2 EMP
C. Left hydraulic system, left EMP
B. Center hydraulic system, C1 & C2 EMP
The center hydraulic system case drain filter module differential pressure transducer gives an indication to the hydraulic interface function (HYDIF) for which of these condition?
A. The case drain filter has a clog
B. The center system high lift priority valve closes
C. The pressure between C1 pump and C2 pump is a set value
A. The case drain filter has a clog
Wich component is connected to a strut drain line?
A. The engine supply shutoff valve (ESSOV)
B. The auto bleed and low pressure relief valves
C. The nose gear isolation valve (NGIV)
B. The auto bleed and low pressure relief valves
