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UPDATED 2024/2025 NCCER ELECTRICAL MODULE 2 LEVEL 2 MOTORS: THEORY AND APPLICATION QUESTIONS WITH CORRECT ANSWERS ALREADY PASSED AND VERIFIED$15.49
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How DC motors operate? - CORRECT ANSWER Magnetic lines of force are
continuous and always form closed loops; Magnetic lines of force do not cross.
Armature: (Definition) - CORRECT ANSWER The rotating windings of a DC
motor.
The ____ is a movable electromagnet located between the poles of anot...
NCCER ELECTRICAL MODULE 2 LEVEL 2
MOTORS: THEORY AND APPLICATION 2024
QUESTIONS WITH CORRECT ANSWERS ALREADY
PASSED AND VERIFIED
How DC motors operate? - CORRECT ANSWER Magnetic lines of force are
continuous and always form closed loops; Magnetic lines of force do not cross.
Armature: (Definition) - CORRECT 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. - CORRECT 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. - CORRECT ANSWER Torque
Commentator: (Definition) - CORRECT 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 -
CORRECT ANSWER Torque
A _____ is produced by the fields poles, and a loop of wire in the armature turns and cuts
this magnetic field. - CORRECT ANSWER Magnetic field
CEMF - CORRECT ANSWER Counter electromotive force (CEMF)
, NCCER ELECTRICAL MODULE 2 LEVEL 2
MOTORS: THEORY AND APPLICATION 2024
QUESTIONS WITH CORRECT ANSWERS ALREADY
PASSED AND VERIFIED
Horsepower: (Definition) - CORRECT ANSWER The rated output capacity of the
motor. It is based on breakdown torque, which is the maximum torque a motor will
Types of AC motors - CORRECT ANSWER Synchronous and Induction (Single and
Polyphase)
Periodic duty: (Definition) - CORRECT ANSWER Intermittent operation at a
substantially constant load for a short and definitely specified time.
Revolutions per minute (rpm): (Definition) - CORRECT 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.
Rotation: (Definition) - CORRECT ANSWER For single-phase motors, the standard
rotation, unless otherwise noted, is counterclockwise facing the lead or opposite shaft
end. All motors can be reconnected at the terminal board for opposite rotation unless
other wise indicated.
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