Studied by 8 people
torque
The force that produces rotation
the strength of the magnetic field, the number of turns on the coil, and the position of the coil in the field
The amount of torque developed in a coil depends on several factors including ___
split field motor
One method for reversing the direction of rotation employs two field windings wound in opposite directions on the same pole.
dc motor
is a rotating machine that transforms direct-current electrical energy into mechanical energy.
rheostat
is used to control the speed of shunt motor and it is connected in series with the field winding.
split field method
______ is the process of reversing the direction of rotation employs two field windings wound in opposite directions on the same pole.
switch field method
this type of motor reversal employs a double-pole, double-throw switch that changes the direction of current flow in either the armature or the field.
copper losses
occur when electrons are forced through the copper armature and field windings.
hysteresis losses
result from the armature revolving in an alternating magnetic field and becoming magnetized in two directions.
eddy current losses
occur because the armature's iron core acts as a conductor revolving in a magnetic field.
air cooled
The AC alternators used in large jet-powered aircraft are of the brushless type and are usually ____
constant speed drive
_____ is used to ensure the alternator rotates at the correct speed to ensure a 400-Hz frequency
ampere hours / amp hours
Capacity is measured in ____
clean and tight
One of the most important aspects of battery servicing is keeping the battery____
three
how many types of dc generators are there?
battery
converts chemical energy into electricity it is consists of one or more voltaic cells connected in series.
lead -acid battery
has traditionally been the most popular type used in smaller aircraft.
Nickel-Cadmium or Ni-Cad Battery
has a very distinct advantage that its internal resistance is very low, so its voltage remains constant until it is almost totally discharged.
rectifier
____ in an electrical system change alternating current (AC) to direct current (DC).
Capacity of Battery
a battery’s ability to produce a given amount of current for a specified time.
Electricity
______________ is the electromagnetic induction movement of electrons through wires (conductors) to create an electric current.
Field Coil
______ is the magnetizing force inside a generator is produced by an electromagnet consisting of a wire coil.
Armature Reaction
_____ is the distortion of lines of magnetic flux between the poles of the generator.
Electric, Mechanical
Frame has two primary functions: 1) It completes the ____ circuit between the poles, and 2) It acts as a ____ support for the other parts.
Voltage Regulator
____ is used to control generator output voltage.
Reverse-Current Relay
the third unit of a three-unit regulator is used to prevent current from leaving the battery and feeding the generator.
DC Alternators
____ have the same function as DC generators
DC Generators
DC alternators are lighter and more efficient than ____
electrical components
When installed on most aircraft, the output of a generator typically flows to the aircraft's bus bar where it is distributed to the various
60, 48
If an aircraft has a __ amp generator installed, the maximum continuous load that can be placed on the electrical system is __ amps.
generator control system
______ is designed to keep the generator output within limits for all flight variables.
generators magnetic field strength
Aircraft generator output can easily be adjusted through control of the _____
Over Voltage Protection
The _____ system compares the sampled voltage to a reference voltage.
Close tolerance
This function of a control system is designed to ensure all generator voltage values are within ______ before being connected to the load bus
Typical Generator
A _____ control circuit for low-output generators modifies current flow to the generator field to control generator output power.
Note 
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