AMT Airframe Written Test (FAA)-Questions with Correct
Answers/Verified
Which of the following conditions is most likely to cause the landing gear warning signal to
sound? - ✔✔Landing gear not locked down and throttle retarded.
(Refer to Figure 20.) What will illuminate the amber indicator light? - ✔✔Closing the nose,
left and right wheel gear full retract switches.
(Refer to Figure 20.) What is the minimum circumstance that will cause the landing gear
warning horn to indicate an unsafe condition? - ✔✔Any gear not down and locked, and one
throttle retarded.
Where is the landing gear safety switch usually located? - ✔✔On the main gear shock strut.
What safety device is actuated by the compression and extension of a landing gear strut? -
✔✔Ground safety switch.
Which repair would require a landing gear retraction test? - ✔✔Gear downlock microswitch
Landing gear warning systems usually provide which of the following indications? - ✔✔Red
light for unsafe gear; green light for gear down; no light for gear up
In most modern hydraulically actuated landing gear systems, the order of gear and fairing
door operation is controlled by - ✔✔sequence valves.
What landing gear warning device(s) is/are incorporated on retractable landing gear
aircraft? - ✔✔A horn or other aural device and a red warning light
When a landing gear safety switch on a main gear strut closes at liftoff, which system is
deactivated? - ✔✔Antiskid system.
,The rotor in an autosyn remote indicating system uses - ✔✔an electromagnet.
The basic difference between an autosyn and a magnesyn indicating system is the -
✔✔rotor.
The rotor in a magnesyn remote indicating system uses - ✔✔a permanent magnet.
Microswitches are used primarily as limit switches to - ✔✔control electrical units
automatically
Which of the following are some uses for a DC-selsyn system? - ✔✔- Indicates position of
retractable landing gear.
- Indicates cowl flaps or oil cooler door position.
- Indicates fuel quantity.
- Indicates position of wing flaps.
(1) A DC-selsyn system is a widely used electrical method of indicating a remote mechanical
movement or position.(2) A synchro-type indicating system is an electrical system used for
transmitting information from one point to another.Regarding the above statements, -
✔✔both No. 1 and No. 2 are true.
In the air with the anti-skid armed, current cannot flow to the antiskid control box because
landing gear? - ✔✔Squat switch is open
8803. Some electric motors have two sets of fluid windings wound in opposite directions so
that the - ✔✔C-motor can be operated in either direction.
8804. One purpose of a growler test is to determine the presence of - ✔✔C-a short
armature.
8805. Electric wire terminals for most aircraft applications must be what type? - ✔✔C-Ring.
,8806. What is the principal advantage of the series-wound DC motor? - ✔✔A-High starting
torque.
8807. If a generator is equipped with a vibrator-type voltage regulator, the actual time the
voltage regulator points remain open - ✔✔A-depends on the load carried by the generator.
C-Low spring tension. - ✔✔8808. What is a cause of generator brush arcing?
B-Frequency and voltage must both be equal. - ✔✔8809. What is required when operating
two aircraft AC generators in parallel?
C-high starting torque. - ✔✔8810. The starting current of a series-wound DC motor, in
passing through both the field and armature windings, produces a
B-Landing light retraction motor. - ✔✔8811. Which motor would be most likely to have an
armature brake?
A-interpoles. - ✔✔8812. The method most often used in overcoming the effect of armature
reaction is through the use of
A-strength of the magnetic field. - ✔✔8813. The only practical method of maintaining a
constant voltage output from an aircraft generator under varying conditions of speed and
load is to vary the
B-field assembly. - ✔✔8814. The pole pieces or shoes used in a DC generator are a part of
the
B-Three. - ✔✔8815. How many cycles of AC voltage are produced in a six-pole alternator of
the revolving-field type for each revolution of the rotor?
C-opposite the normal direction and through the shunt field in the normal direction. -
✔✔8816. If the reverse current cutout relay contact points fail to open after the generator
, output has dropped below battery potential, current will flow through the generator
armature
C-A friction brake is applied by a spring and released by a magnet. - ✔✔8817. How does the
magnetic brake used to stop rotation of an electric motor armature operate?
A-The brush pigtail. - ✔✔8818. In a generator, what eliminates any possible sparking to the
brush guides caused by the movement of the brushes within the holder?
C-more current at low RPM than at high RPM. - ✔✔8819. A series-wound DC electric motor
will normally require
A-to prevent circuit failure due to terminal disconnection. - ✔✔8820. The type of electric
wire terminals used for most aircraft applications, in addition to providing good current
carrying capabilities, are designed primarily
C-individual strands will break easily after being nicked. - ✔✔8821. Aluminum wire must be
stripped very carefully because
B-changes alternating current produced in the armature into direct current as it is taken
from the armature. - ✔✔8822. The commutator of generator
C-rate of current used to charge the battery. - ✔✔8823. An ammeter in a battery charging
system is for the purpose of indicating the
A-Reduce field strength.
(Increase it) - ✔✔8824. Which of the following is not one of the purposes of interpoles in a
generator?
A-place armature in a growler and connect a 110V test light on adjacent segments; light
should light. - ✔✔8825. To test generator or motor armature windings for opens,
Answers/Verified
Which of the following conditions is most likely to cause the landing gear warning signal to
sound? - ✔✔Landing gear not locked down and throttle retarded.
(Refer to Figure 20.) What will illuminate the amber indicator light? - ✔✔Closing the nose,
left and right wheel gear full retract switches.
(Refer to Figure 20.) What is the minimum circumstance that will cause the landing gear
warning horn to indicate an unsafe condition? - ✔✔Any gear not down and locked, and one
throttle retarded.
Where is the landing gear safety switch usually located? - ✔✔On the main gear shock strut.
What safety device is actuated by the compression and extension of a landing gear strut? -
✔✔Ground safety switch.
Which repair would require a landing gear retraction test? - ✔✔Gear downlock microswitch
Landing gear warning systems usually provide which of the following indications? - ✔✔Red
light for unsafe gear; green light for gear down; no light for gear up
In most modern hydraulically actuated landing gear systems, the order of gear and fairing
door operation is controlled by - ✔✔sequence valves.
What landing gear warning device(s) is/are incorporated on retractable landing gear
aircraft? - ✔✔A horn or other aural device and a red warning light
When a landing gear safety switch on a main gear strut closes at liftoff, which system is
deactivated? - ✔✔Antiskid system.
,The rotor in an autosyn remote indicating system uses - ✔✔an electromagnet.
The basic difference between an autosyn and a magnesyn indicating system is the -
✔✔rotor.
The rotor in a magnesyn remote indicating system uses - ✔✔a permanent magnet.
Microswitches are used primarily as limit switches to - ✔✔control electrical units
automatically
Which of the following are some uses for a DC-selsyn system? - ✔✔- Indicates position of
retractable landing gear.
- Indicates cowl flaps or oil cooler door position.
- Indicates fuel quantity.
- Indicates position of wing flaps.
(1) A DC-selsyn system is a widely used electrical method of indicating a remote mechanical
movement or position.(2) A synchro-type indicating system is an electrical system used for
transmitting information from one point to another.Regarding the above statements, -
✔✔both No. 1 and No. 2 are true.
In the air with the anti-skid armed, current cannot flow to the antiskid control box because
landing gear? - ✔✔Squat switch is open
8803. Some electric motors have two sets of fluid windings wound in opposite directions so
that the - ✔✔C-motor can be operated in either direction.
8804. One purpose of a growler test is to determine the presence of - ✔✔C-a short
armature.
8805. Electric wire terminals for most aircraft applications must be what type? - ✔✔C-Ring.
,8806. What is the principal advantage of the series-wound DC motor? - ✔✔A-High starting
torque.
8807. If a generator is equipped with a vibrator-type voltage regulator, the actual time the
voltage regulator points remain open - ✔✔A-depends on the load carried by the generator.
C-Low spring tension. - ✔✔8808. What is a cause of generator brush arcing?
B-Frequency and voltage must both be equal. - ✔✔8809. What is required when operating
two aircraft AC generators in parallel?
C-high starting torque. - ✔✔8810. The starting current of a series-wound DC motor, in
passing through both the field and armature windings, produces a
B-Landing light retraction motor. - ✔✔8811. Which motor would be most likely to have an
armature brake?
A-interpoles. - ✔✔8812. The method most often used in overcoming the effect of armature
reaction is through the use of
A-strength of the magnetic field. - ✔✔8813. The only practical method of maintaining a
constant voltage output from an aircraft generator under varying conditions of speed and
load is to vary the
B-field assembly. - ✔✔8814. The pole pieces or shoes used in a DC generator are a part of
the
B-Three. - ✔✔8815. How many cycles of AC voltage are produced in a six-pole alternator of
the revolving-field type for each revolution of the rotor?
C-opposite the normal direction and through the shunt field in the normal direction. -
✔✔8816. If the reverse current cutout relay contact points fail to open after the generator
, output has dropped below battery potential, current will flow through the generator
armature
C-A friction brake is applied by a spring and released by a magnet. - ✔✔8817. How does the
magnetic brake used to stop rotation of an electric motor armature operate?
A-The brush pigtail. - ✔✔8818. In a generator, what eliminates any possible sparking to the
brush guides caused by the movement of the brushes within the holder?
C-more current at low RPM than at high RPM. - ✔✔8819. A series-wound DC electric motor
will normally require
A-to prevent circuit failure due to terminal disconnection. - ✔✔8820. The type of electric
wire terminals used for most aircraft applications, in addition to providing good current
carrying capabilities, are designed primarily
C-individual strands will break easily after being nicked. - ✔✔8821. Aluminum wire must be
stripped very carefully because
B-changes alternating current produced in the armature into direct current as it is taken
from the armature. - ✔✔8822. The commutator of generator
C-rate of current used to charge the battery. - ✔✔8823. An ammeter in a battery charging
system is for the purpose of indicating the
A-Reduce field strength.
(Increase it) - ✔✔8824. Which of the following is not one of the purposes of interpoles in a
generator?
A-place armature in a growler and connect a 110V test light on adjacent segments; light
should light. - ✔✔8825. To test generator or motor armature windings for opens,
