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NCCER Electrical Module 2 Level 2 Motors:
Theory and Application
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Level 2 Module 2 vocab definitions (... NCCER Electrical Level 2 Module 2 ... Electronic Brake Con
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The name of the motor part that rotates during operation is the ____.
Choose matching definition
1 Commutator 2 Field Coil
3 Armature 4 Stator
Don't know?
Magnetic lines of force are continuous and always form closed
How DC motors operate?
loops; Magnetic lines of force do not cross.
Armature: (Definition) The rotating windings of a DC motor.
The ____ is a movable Armature
electromagnet located between
the poles of another fixed
permanent (field) magnet as
shown.
, A twisting force called ______ must Torque
be developed. _____ is produced
by mounting a loop in a fixed
magnetic field and as long as
the fields of the magnet and
armature interact.
A device used on electric motors or generators to maintain a
Commentator: (Definition)
unidirectional current.
In the neutral plane, no ____ is Torque
produced and the rotation of
the armature should stop
A _____ is produced by the fields Magnetic field
poles, and a loop of wire in the
armature turns and cuts this
magnetic field.
CEMF Counter electromotive force (CEMF)
The rated output capacity of the motor. It is based on breakdown
Horsepower: (Definition) torque, which is the maximum torque a motor will develop
without an abrupt drop in speed.
Horsepower: (Equation) Hp= Watts/746
Shunt
Types of DC motors Series
Compound
Types of AC motors Synchronous and Induction (Single and Polyphase)
Intermittent operation at a substantially constant load for a short
Periodic duty: (Definition)
and definitely specified time.
The approximate full-load speed at the rated power line
Revolutions per minute (rpm):
frequency. The speed of a motor is determined by the number of
(Definition)
poles in the winding.
For single-phase motors, the standard rotation, unless otherwise
noted, is counterclockwise facing the lead or opposite shaft end.
Rotation: (Definition)
All motors can be reconnected at the terminal board for
opposite rotation unless other wise indicated.
The speed of the revolving field of the stator, which is
Synchronous speed: (Definition) dependent on the supply frequency and number of poles in a
stator winding.
The stationary portion of a DC motor that produces the
Field poles: (Definition)
magnetic field.
The name of the motor part that Armature
rotates during operation is the
____.
The principle reason for eliminate commutator problems
developing the brushless DC
motor was to ___.
The electrical energy required 746W
to produce 1hp of mechanical
energy is _____.
NCCER Electrical Module 2 Level 2 Motors:
Theory and Application
Save
Students also studied
Flashcard sets Study guides
Level 2 Module 2 vocab definitions (... NCCER Electrical Level 2 Module 2 ... Electronic Brake Con
23 terms Teacher 46 terms 45 terms
DarealP01 Preview tkrejci Preview Wanjaki88_Wanjak
Stretch your brain before your first study session
Learn 1 /7 Study with Learn
The name of the motor part that rotates during operation is the ____.
Choose matching definition
1 Commutator 2 Field Coil
3 Armature 4 Stator
Don't know?
Magnetic lines of force are continuous and always form closed
How DC motors operate?
loops; Magnetic lines of force do not cross.
Armature: (Definition) The rotating windings of a DC motor.
The ____ is a movable Armature
electromagnet located between
the poles of another fixed
permanent (field) magnet as
shown.
, A twisting force called ______ must Torque
be developed. _____ is produced
by mounting a loop in a fixed
magnetic field and as long as
the fields of the magnet and
armature interact.
A device used on electric motors or generators to maintain a
Commentator: (Definition)
unidirectional current.
In the neutral plane, no ____ is Torque
produced and the rotation of
the armature should stop
A _____ is produced by the fields Magnetic field
poles, and a loop of wire in the
armature turns and cuts this
magnetic field.
CEMF Counter electromotive force (CEMF)
The rated output capacity of the motor. It is based on breakdown
Horsepower: (Definition) torque, which is the maximum torque a motor will develop
without an abrupt drop in speed.
Horsepower: (Equation) Hp= Watts/746
Shunt
Types of DC motors Series
Compound
Types of AC motors Synchronous and Induction (Single and Polyphase)
Intermittent operation at a substantially constant load for a short
Periodic duty: (Definition)
and definitely specified time.
The approximate full-load speed at the rated power line
Revolutions per minute (rpm):
frequency. The speed of a motor is determined by the number of
(Definition)
poles in the winding.
For single-phase motors, the standard rotation, unless otherwise
noted, is counterclockwise facing the lead or opposite shaft end.
Rotation: (Definition)
All motors can be reconnected at the terminal board for
opposite rotation unless other wise indicated.
The speed of the revolving field of the stator, which is
Synchronous speed: (Definition) dependent on the supply frequency and number of poles in a
stator winding.
The stationary portion of a DC motor that produces the
Field poles: (Definition)
magnetic field.
The name of the motor part that Armature
rotates during operation is the
____.
The principle reason for eliminate commutator problems
developing the brushless DC
motor was to ___.
The electrical energy required 746W
to produce 1hp of mechanical
energy is _____.
