CDC 2AX5X - Aerospace Maintenance Journeyman
- 1.The methods used to cool brushless alternating current (AC) generators are
- A.
Blast air and ram air
- B.
Engine oil and blast air
- C.
Blast air and generator oil
- D.
Generator oil and engine oil
- 2.The output of the constant speed drive (CSD) used to drive a 60/80 kilovolt ampere (KVA) generator is approximately
- A.
4,000 rpm
- B.
6,000 rpm
- C.
8,000 rpm
- D.
10,000 rpm
- 3.The underspeed switch (USS) on the 60/80 kilovolt ampere (KVA) generator constant speed drive (CSD) actuates at
- A.
325 Hz
- B.
345 Hz
- C.
365 Hz
- D.
395 Hz
- 4.What supplies rotary power to the input gear of the constant speed drive (CSD)?
- A.
Accessory gearbox
- B.
Transmission shaft
- C.
Torque converter
- D.
Hydraulic gear
- 5.A battery's internal component that is a grid or framework which supports the active chemical materials is called the
- A.
Plate
- B.
Separator
- C.
Electrolyte
- D.
Chemical solution
- 6.A 24-volt nickel-cadmium battery has
- A.
12 cells
- B.
19 cells
- C.
20 cells
- D.
24 cells
- 7.The nickel-cadmium battery can be fully charged only by
- A.
Pulsating current
- B.
Constant current
- C.
Varying current
- D.
Eddy current
- 8.What type of motor can operate on alternating current (AC) or direct current (DC)?
- A.
Shunt
- B.
Circuit
- C.
Universal
- D.
Compound
- 9.A shunt-type motor has
- A.
Less speed regulation than a universal motor
- B.
A field winding in a series with the armature
- C.
Low starting torque and good speed regulation
- D.
High starting torque and poor speed regulation
- 10.The three states of matter are
- A.
Liquids, gasses, and minerals
- B.
Gasses, solids, and minerals
- C.
Gasses, solids, and organics
- D.
Liquids, gasses, and solids
- 11.When any force causes a solid to change permanently, the solid is said to have
- A.
Passed the elastic limit
- B.
Lost the ability to expand
- C.
Failed to meet the elastic limit
- D.
Passed the compression limit
- 12.The most outstanding characteristic of a liquid is its
- A.
Rigidity
- B.
Usability
- C.
Ability to compress within its container
- D.
Ability to conform to the shape of its container
- 13.What usually produces flow in a pneudraulic system?
- A.
Relief valves in the lines
- B.
Piston pushing the fluid
- C.
Scupper pushing the fluid
- D.
Selector valve in the lines
- 14.If 50 psi of cylinder pressure acts on a 5 sq-in piston head, what will the resulting force be?
- A.
150 lbs
- B.
200 lbs
- C.
250 lbs
- D.
300 lbs
- 15.When an 8 sq-in piston moves 5 inches within a cylinder, what volume of liquid is displaced? (cu-in = cubic inches = in^3)
- A.
4 cu-in
- B.
40 cu-in
- C.
400 cu-in
- D.
4,000 cu-in
- 16.Turbulence affects fluid-flow in a hydraulic line by
- A.
Increasing velocity and viscosity
- B.
Increasing volume and displacement
- C.
Creating resistance and loss of energy
- D.
Creating resistance and energy increase
- 17.A tube whose cross-section area is gradually reduced to a smaller size diameter is called a
- A.
Torus
- B.
Pipette
- C.
Vortex
- D.
Venturi
- 18.The purposes of a hydraulic reservoir is to
- A.
Store fluid and act as a surge chamber
- B.
Restrict fluid flow in selected directions
- C.
Pressurize and direct fluid to an actuator
- D.
Replenish fluid, allow for thermal expansion, and provide a means of bleeding air from the system
- 19.The purpose of a standpipe in a reservoir is to
- A.
Protect the pump
- B.
Reserve fluid for the power pump
- C.
Reserve fluid for the emergency pump
- D.
Supply the pump during inverted flight
- 20.The amount of fluid a pump produces on each cycle or revolution is called its
- A.
Displacement
- B.
Purgement
- C.
Volume
- D.
Rating
- 21.When referring to hydraulic hand pumps, double action means
- A.
Fluid-flow is created with each stroke of the handle
- B.
Fluid-flow is created with every other stroke of the handle
- C.
Double volume is displaced with each stroke of the handle
- D.
Double volume is displaced with every other stroke of the handle
- 22.Variable-volume pumps do not require a separate pressure-regulating device in the system because
- A.
They deliver low pressure
- B.
They have an integral compensator
- C.
The case drain relieves high system pressure
- D.
There is no angle between the drift shaft and cylinder block
- 23.What provides for cooler operation in a Stratopower variable-volume hydraulic pump?
- A.
Foot valves
- B.
Oil radiator
- C.
Creep plates
- D.
Fluid radiator
- 24.The purpose of a hydraulic motor is to convert hydraulic pressure into
- A.
Rotary mechanical motion
- B.
Kinetic flow motion
- C.
Straight-line motion
- D.
Fluid locomotion
- 25.How is the piston installed in an accumulator?
- A.
In either direction
- B.
Hollow end toward the air side of the accumulator
- C.
Hollow end toward the fluid side of the accumulator
- D.
Drilled passage toward the air side of the accumulator
Back to top