ASA Power Plant Test Guide: Engine
Electrical Exam Questions And Answers
(8342) What device is used to convert alternating current, which
has been induced into the loops of the rotating armature of a DC
generator, to direct current? -
correct answer ✅A commutator
(8343) A certain direct current series motor mounted within an
aircraft draws more amperes during start than when it is running
under it's rated load. The most logical conclusion that may be
drawn is... -
correct answer ✅The condition is normal for this type of motor.
(8344) The stationary field strength in a direct current generator is
varied -
correct answer ✅According to the load requirements.
(8345) What type of electric motor is generally used a direct-
cranking engine starter? -
correct answer ✅Direct current, series-wound motor.
(8346) Upon what does the output frequency of an AC generator
(alternator) depend? -
correct answer ✅The speed of rotation and the number of field
poles.
,ASA Power Plant Test Guide: Engine
Electrical Exam Questions And Answers
(8347) A high surge of current is required when a DC electric motor
is first started. As the speed of the motor is increases, -
correct answer ✅The counter emf builds up and opposes the
applied emf, thus reducing the current flow through the armature.
(8348) Alternators (AC generators) that are driven by a constant-
speed drive (CSD) mechanism are used to regulate the alternator to
a constant... -
correct answer ✅Hertz output.
(8349) What is used to polish commutators or slip rings? -
correct answer ✅Very fine sandpaper.
(8350) - If a generator is malfunctioning, its voltage can be reduced
to residual by actuating the -
correct answer ✅Generator master switch.
(8351) - If the points in a vibrator-type voltage regulator stick in the
closed position while the generator is operating, what will be the
probable result? -
correct answer ✅Generator output voltage will increase.
, ASA Power Plant Test Guide: Engine
Electrical Exam Questions And Answers
(8352) - Why is a constant-speed drive used to control the speed of
some aircraft engine-driven generators? -
correct answer ✅A- So that the voltage output of the generator
will remain within limits.
B- To eliminate uncontrolled surges of current to the electrical
system.
C- So that the frequency of the alternating current output will
remain constant.
(8353) - According to the electron theory of the flow of electricity,
when a properly functioning dc alternator and voltage regulating
system is charging an aircraft's battery, the direction of current flow
through the battery -
correct answer ✅A- is into the negative terminal and out the
positive terminal.
B- is into the positive terminal and out the negative terminal.
C- cycles back and forth with the number of cycles per second being
controlled by the rotational speed of the alternator.
(8354) - Aircraft that operate more than one generator connected
to a common electrical system must be provided with -
Electrical Exam Questions And Answers
(8342) What device is used to convert alternating current, which
has been induced into the loops of the rotating armature of a DC
generator, to direct current? -
correct answer ✅A commutator
(8343) A certain direct current series motor mounted within an
aircraft draws more amperes during start than when it is running
under it's rated load. The most logical conclusion that may be
drawn is... -
correct answer ✅The condition is normal for this type of motor.
(8344) The stationary field strength in a direct current generator is
varied -
correct answer ✅According to the load requirements.
(8345) What type of electric motor is generally used a direct-
cranking engine starter? -
correct answer ✅Direct current, series-wound motor.
(8346) Upon what does the output frequency of an AC generator
(alternator) depend? -
correct answer ✅The speed of rotation and the number of field
poles.
,ASA Power Plant Test Guide: Engine
Electrical Exam Questions And Answers
(8347) A high surge of current is required when a DC electric motor
is first started. As the speed of the motor is increases, -
correct answer ✅The counter emf builds up and opposes the
applied emf, thus reducing the current flow through the armature.
(8348) Alternators (AC generators) that are driven by a constant-
speed drive (CSD) mechanism are used to regulate the alternator to
a constant... -
correct answer ✅Hertz output.
(8349) What is used to polish commutators or slip rings? -
correct answer ✅Very fine sandpaper.
(8350) - If a generator is malfunctioning, its voltage can be reduced
to residual by actuating the -
correct answer ✅Generator master switch.
(8351) - If the points in a vibrator-type voltage regulator stick in the
closed position while the generator is operating, what will be the
probable result? -
correct answer ✅Generator output voltage will increase.
, ASA Power Plant Test Guide: Engine
Electrical Exam Questions And Answers
(8352) - Why is a constant-speed drive used to control the speed of
some aircraft engine-driven generators? -
correct answer ✅A- So that the voltage output of the generator
will remain within limits.
B- To eliminate uncontrolled surges of current to the electrical
system.
C- So that the frequency of the alternating current output will
remain constant.
(8353) - According to the electron theory of the flow of electricity,
when a properly functioning dc alternator and voltage regulating
system is charging an aircraft's battery, the direction of current flow
through the battery -
correct answer ✅A- is into the negative terminal and out the
positive terminal.
B- is into the positive terminal and out the negative terminal.
C- cycles back and forth with the number of cycles per second being
controlled by the rotational speed of the alternator.
(8354) - Aircraft that operate more than one generator connected
to a common electrical system must be provided with -
