Engine Electrical Systems ASA Exam
Questions And Answers
When a 28 volt, 75 ampere generator is installed on an aircraft, an
electrical load analysis ground check is performed and it is
determined that the battery is furnishing 57 amperes to the system,
with all electrical equipment operating. This indicates -
correct answer ✅the load will be within the generator load limit.
How many hours will a 140 ampere-hour battery deliver 15
amperes? -
correct answer ✅9.33 hours.
When selecting an electrical switch for installation in an aircraft
circuit utilizing a direct current motor, -
correct answer ✅a derating factor should be applied.
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.
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 -
, Engine Electrical Systems ASA Exam
Questions And Answers
correct answer ✅is into the negative terminal and out the positive
terminal.
A high surge of current is required when a dc electric motor is first
started. As the speed of the motor increases, -
correct answer ✅the counter emf builds up and opposes the
applied emf, thus reducing the current flow through the armature.
What is used to polish commutators or slip rings? -
correct answer ✅Very fine sandpaper.
How are the rotor windings of an aircraft alternator usually excited?
-
correct answer ✅By a variable direct current.
Electrical switches are rated according to the -
correct answer ✅voltage and the current they can control.
When does current flow through the coil of a solenoid-operated
electrical switch? -
correct answer ✅Continually, as long as the control circuit is
complete.
Questions And Answers
When a 28 volt, 75 ampere generator is installed on an aircraft, an
electrical load analysis ground check is performed and it is
determined that the battery is furnishing 57 amperes to the system,
with all electrical equipment operating. This indicates -
correct answer ✅the load will be within the generator load limit.
How many hours will a 140 ampere-hour battery deliver 15
amperes? -
correct answer ✅9.33 hours.
When selecting an electrical switch for installation in an aircraft
circuit utilizing a direct current motor, -
correct answer ✅a derating factor should be applied.
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.
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 -
, Engine Electrical Systems ASA Exam
Questions And Answers
correct answer ✅is into the negative terminal and out the positive
terminal.
A high surge of current is required when a dc electric motor is first
started. As the speed of the motor increases, -
correct answer ✅the counter emf builds up and opposes the
applied emf, thus reducing the current flow through the armature.
What is used to polish commutators or slip rings? -
correct answer ✅Very fine sandpaper.
How are the rotor windings of an aircraft alternator usually excited?
-
correct answer ✅By a variable direct current.
Electrical switches are rated according to the -
correct answer ✅voltage and the current they can control.
When does current flow through the coil of a solenoid-operated
electrical switch? -
correct answer ✅Continually, as long as the control circuit is
complete.
