DC Motors
What converts the AC produced in the armature into DC?
Commutator
Name the device that converts mechanical input into DC electrical output.
Generator
The armature winding that provides low voltage and high current.
Lap wound
In a compound generator, the setting of the amount of currents in the series and shunt field windings determines what?
the compounding
The cumulative compound motor connection means that the fields of the series and shunt field windings do what?
add
List the three basic types of DC motors
Series, Shunt, Compound
The rotating part of the generator is called what?
Armature
The armature winding that provides moderate voltage and moderate current.
Frogleg wound
When the windings of a compound generator are connected so they aid each other in the production of magnetism, that connection is called _______ compoiund.
Cumulative
The speed regulation of a DC motor is proportional to the ________.
resistance of the armature
Name the items that ride against the commutator to make electrical connection.
Brushes
The output voltage of a series generator is set when the load is ______.
Connected
List two ways to reduce current to the armature of a DC motor.
1. Connect resistance in series with the armature.
2. Use an electronic controller to supply variable voltage to the armature circuit separately from the field.
When a generator is ______, the output voltage is higher at full load than it is at no load.
Overcompounded
Permanent magnet motors have ______ efficiency than wound field motors.
higher
What is the name of the voltage induced into the armature of a DC motor.
CEMF/ Back-EMF
In a generator, the series field diverter is also called what?
Series field shunt rheostat
What type of armature is used in the starter of almost all automobiles?
Lap-wound Armature
When a generator is _______, the output voltage is less at full load than it is at no load.
Undercompounded
Another name for ServoDisc motor.
Printed Circuit motor.
In a compound DC motor control circuit, the field loss relay disconnects the _______ if power is lost to the ______.
Armature, shunt field
The position at which there is no induced voltage in the armature is called the _________.
Neutral Plane
What type of armature is used in the small generator in hand-cranked megohmmeter?
Wave-wound armature
What does a series field diverter or series field shunt rheostat do?
Permits part of the current that normally flows through the series field to flow through the resistor, reducing the amount of magnetic flux, also reducing the amount of compounding.
What is dynamic braking?
A type of braking action where the countertorque developed by the generator action causes the armature to decrease in speed.