Dc Motors
A compound motor has __ field windings
series and shunt
the rotating part of a generator is called the ___
Armature
the items that ride against the commutator to make electrical connection are the __
Brushes
the output voltage of a shunt generator is set when the load is __
disconnected
the output voltage of a series generator is set when the load is ___
connected
the DC motor known as a constant speed motor is the __ motor
Shunt
the component of a dc generator that converts the armature AC into DC is the ___
Commutator
a device that converts electrical input into mechanical output is called
Motor
the magnetic field is sometimes provided by electromagnets. this is done by windings that are wound around __
pole pieces
a device that converts mechanical input into DC electrical output is a __
Generator
3 basic types of DC Motors
Shunt, Series, Compound
In a generator, the series field diverter is also called the ___
series field shunt rheostat
the output voltage of a shunt generator is usually controlled by the amount of __
field excitation current
when the field winding of a dc motor is connected in parallel with the armature, the motor is called a __ motor
shunt
the speed regulation of a DC motor is proportional to the ___
armature resistance
small permanent magnet motors that have lightweight rotors are often used as __
Servomotors
a generator containing both series and shunt field windings is called a ____ generator
compound
series field windings are connected in series with the armature. they are wound with __ turns of fairly __ wire
few, large
small permanent magnet motors that have lightweight rotors are often used as __
Servomotors
shunt field windings are connected in parallel with the armature. they are wound with __ turns of fairly __ wire
many,small
what are the 2 factors that determine the amount of torque produced by a DC motor?
The strength of the magnetic field of the pole pieces, The strength of the magnetic field of the armature
in a compound generator, the setting of the amount of currents in the series and shunt field windings determines the ___
Compounding
the winding that provides high voltage and low current is the __ wound
wave
the winding that provides low voltage and high current is the ___ wound
lap
the winding that provides moderate voltage and moderate current is the __ wound
frogleg