5-66.
The direction and speed of the
hydraulic motor are controlled by
the
1.
electric motor
2.
hydraulic pump
3.
prime mover
4.
B-end
REFER TO FIGURE 12-8 IN YOUR TEXTBOOK IN
ANSWERING QUESTIONS 5-67 THROUGH 5-71.
5-67.
Which of the following components
is/are NOT operated by nitrogen
from the manually operated
nitrogen bottle?
1.
Dump valves
2.
Nose gear cylinder
3.
Main gear unlock cylinders
4.
Aft door cylinders
5-68.
What provides the force to
reposition the shuttle valves for
emergency operation?
1.
Hydraulic fluid
2.
Gravity
3.
Springs
4.
Nitrogen
5-69.
When the emergency system is
actuated, what force extends the
main gear after the unlock hooks
are released?
1.
Gravity
2.
Hydraulic pressure
3.
Nitrogen pressure
4.
A combination of gravity and
nitrogen pressure
5-70.
When the emergency system is
actuated, what component is used
in the system to prevent a fluid
lock in the landing gear?
1.
Dump valve
2.
Timer valve
3.
Relief valve
4.
Shuttle valve
REFER TO FIGURE 12-10 IN YOUR TEXTBOOK
IN ANSWERING QUESTIONS 5-71 AND 5-72.
5-71.
How is the main valve in the
4-way valve assembly normally
operated?
1.
Electrically
2.
Hydraulically
3.
Manually
5-72.
What is the function of the
orifice plate installed in the
lines to port A of the hydraulic
cylinders?
1.
To control the flow of
hydraulic fluid to the
cylinder for raising
operations
2.
To control the flow of
hydraulic fluid to the
cylinder for lowring
operations
3.
Both 1 and 2 above
4.
To allow for changes in the
viscosity of the hydraulic
flluid as its temperature
changes
38