

Module 26202-20: DC and AC Motors Worksheet
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Professional Development
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1.
FLASHCARD QUESTION
Front
In a DC motor, the armature turns and cuts through the lines of magnetic force produced by the _________.
Back
field poles
2.
FLASHCARD QUESTION
Front
Which of the following is TRUE regarding the neutral plane in a single-loop DC motor? _________.
Back
No torque is produced in the neutral plane.
3.
FLASHCARD QUESTION
Front
The approximate horsepower of a 15,000W DC motor is _________.
Back
20hp
4.
FLASHCARD QUESTION
Front
Which of the following motors is the BEST choice for an application requiring adjustable speeds?
Options: Shunt DC, Synchronous, Universal, Stepper
Back
Shunt DC
5.
FLASHCARD QUESTION
Front
A polyphase synchronous motor has three stator windings that are _________
Back
120° apart
6.
FLASHCARD QUESTION
Front
Which of the following motors is used to provide high starting torque and constant speed under load? Compound, Shunt, Series, Universal
Back
Compound
7.
FLASHCARD QUESTION
Front
The synchronous speed at which a four-pole, 50Hz induction motor operates is _________.
Back
1,500 rpm
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