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NCCER Electrical Module 2 Level 2
Motors: Theory and Application EXAM
Questions & Answers | Latest Already
Graded A+ UPDATE 2025|2026
How DC motors operate? - (ANSWER)Magnetic lines of force are continuous and
always form closed loops; Magnetic lines of force do not cross.
Armature: (Definition) - (ANSWER)The rotating windings of a DC motor.
The ____ is a movable electromagnet located between the poles of another fixed
permanent (field) magnet as shown. - (ANSWER)Armature
A twisting force called ______ must 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. - (ANSWER)Torque
Commentator: (Definition) - (ANSWER)A device used on electric motors or
generators to maintain a unidirectional current.
In the neutral plane, no ____ is produced and the rotation of the armature should
stop - (ANSWER)Torque
A _____ is produced by the fields poles, and a loop of wire in the armature turns
and cuts this magnetic field. - (ANSWER)Magnetic field
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CEMF - (ANSWER)Counter electromotive force (CEMF)
Horsepower: (Definition) - (ANSWER)The rated output capacity of the motor. It is
based on breakdown torque, which is the maximum torque a motor will develop
without an abrupt drop in speed.
Horsepower: (Equation) - (ANSWER)Hp= Watts/746
Types of DC motors - (ANSWER)Shunt
Series
Compound
Types of AC motors - (ANSWER)Synchronous and Induction (Single and
Polyphase)
Periodic duty: (Definition) - (ANSWER)Intermittent operation at a substantially
constant load for a short and definitely specified time.
Revolutions per minute (rpm): (Definition) - (ANSWER)The approximate full-load
speed at the rated power line frequency. The speed of a motor is determined by
the number of poles in the winding.
NCCER Electrical Module 2 Level 2
Motors: Theory and Application EXAM
Questions & Answers | Latest Already
Graded A+ UPDATE 2025|2026
How DC motors operate? - (ANSWER)Magnetic lines of force are continuous and
always form closed loops; Magnetic lines of force do not cross.
Armature: (Definition) - (ANSWER)The rotating windings of a DC motor.
The ____ is a movable electromagnet located between the poles of another fixed
permanent (field) magnet as shown. - (ANSWER)Armature
A twisting force called ______ must 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. - (ANSWER)Torque
Commentator: (Definition) - (ANSWER)A device used on electric motors or
generators to maintain a unidirectional current.
In the neutral plane, no ____ is produced and the rotation of the armature should
stop - (ANSWER)Torque
A _____ is produced by the fields poles, and a loop of wire in the armature turns
and cuts this magnetic field. - (ANSWER)Magnetic field
, 2
CEMF - (ANSWER)Counter electromotive force (CEMF)
Horsepower: (Definition) - (ANSWER)The rated output capacity of the motor. It is
based on breakdown torque, which is the maximum torque a motor will develop
without an abrupt drop in speed.
Horsepower: (Equation) - (ANSWER)Hp= Watts/746
Types of DC motors - (ANSWER)Shunt
Series
Compound
Types of AC motors - (ANSWER)Synchronous and Induction (Single and
Polyphase)
Periodic duty: (Definition) - (ANSWER)Intermittent operation at a substantially
constant load for a short and definitely specified time.
Revolutions per minute (rpm): (Definition) - (ANSWER)The approximate full-load
speed at the rated power line frequency. The speed of a motor is determined by
the number of poles in the winding.
