Aircraft Electrical Systems - WRITTEN
TEST QUESTIONS
An aircraft electrical circuit control relay is.....? - Answer-An electrically operated switch.
The inductor-type inverter output voltage is controlled by the.....? - Answer-DC stator field current
What is the most accurate type of frequency-measuring instrument? - Answer-Integrated circuit chip
having a clock circuit.
The primary considerations when selecting electric cable size are? - Answer-Current-carrying capacity
and allowable voltage drop.
The over-voltage control automatically protects the generator system when excessive voltage is present
by.....? - Answer-opening the shunt field circuit.
An ammeter in a battery charging system is for the purpose of indicating the.....? - Answer-Rate of
current used to charge the battery.
If a generator is equipped with a vibrator-type voltage regulator, the actual time the voltage regulator
points remain open.....? - Answer-Depends on the load carried by the generator.
, A circuit protection device called a current limiter is essentially a slow-blow fuse and is designed to be
used in.....? - Answer-Heavy power circuits.
How can it be determined if a transformer winding has some of its turns shorted together? - Answer-
The transformer will get hot in normal operation.
How can the direction of rotation of a dc electric motor be changed? - Answer-Reverse the electrical
connections to either the field or armature windings.
Some electric motors have two sets of field windings wound in opposite directions so that the.....? -
Answer-Motor can be operated in either direction.
The type of electric wire terminals used for most aircraft applications, in addition to providing good
current carrying capabilities, are designed primarily.....? - Answer-To prevent circuit failure due to
terminal disconnection.
What kind of switch should you install in a single wire circuit that required the switch to be manually
held in the ON position? - Answer-Single-pole, single-throw (SPST), two-position normally open (NO).
The most common method of regulating the voltage output of a compound dc generator is to vary
the.....? - Answer-Current flowing through the shunt field coils.
When handling a high voltage capacitor in an electrical circuit, be sure it.....? - Answer-Is fully discharged
before removing it from the circuit.
Which of the following copper electrical cable sizes should be selected to replace a No. 6 aluminum
electrical cable? - Answer-No. 6
TEST QUESTIONS
An aircraft electrical circuit control relay is.....? - Answer-An electrically operated switch.
The inductor-type inverter output voltage is controlled by the.....? - Answer-DC stator field current
What is the most accurate type of frequency-measuring instrument? - Answer-Integrated circuit chip
having a clock circuit.
The primary considerations when selecting electric cable size are? - Answer-Current-carrying capacity
and allowable voltage drop.
The over-voltage control automatically protects the generator system when excessive voltage is present
by.....? - Answer-opening the shunt field circuit.
An ammeter in a battery charging system is for the purpose of indicating the.....? - Answer-Rate of
current used to charge the battery.
If a generator is equipped with a vibrator-type voltage regulator, the actual time the voltage regulator
points remain open.....? - Answer-Depends on the load carried by the generator.
, A circuit protection device called a current limiter is essentially a slow-blow fuse and is designed to be
used in.....? - Answer-Heavy power circuits.
How can it be determined if a transformer winding has some of its turns shorted together? - Answer-
The transformer will get hot in normal operation.
How can the direction of rotation of a dc electric motor be changed? - Answer-Reverse the electrical
connections to either the field or armature windings.
Some electric motors have two sets of field windings wound in opposite directions so that the.....? -
Answer-Motor can be operated in either direction.
The type of electric wire terminals used for most aircraft applications, in addition to providing good
current carrying capabilities, are designed primarily.....? - Answer-To prevent circuit failure due to
terminal disconnection.
What kind of switch should you install in a single wire circuit that required the switch to be manually
held in the ON position? - Answer-Single-pole, single-throw (SPST), two-position normally open (NO).
The most common method of regulating the voltage output of a compound dc generator is to vary
the.....? - Answer-Current flowing through the shunt field coils.
When handling a high voltage capacitor in an electrical circuit, be sure it.....? - Answer-Is fully discharged
before removing it from the circuit.
Which of the following copper electrical cable sizes should be selected to replace a No. 6 aluminum
electrical cable? - Answer-No. 6
