
DC Motor Quiz
Authored by Paul Humphreys
Engineering
12th Grade
Used 6+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main function of the commutator in a DC motor?
Converts DC to AC
Ensures current flows in one direction
Increases motor speed
Reduces motor torque
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which DC motor is best suited for high starting torque applications like cranes or electric trains?
DC Shunt Motor
DC Series Motor
Compound Motor
Universal Motor
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key disadvantage of a DC series motor?
Low starting torque
Poor speed control
High maintenance costs
Cannot operate with AC
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens if a DC series motor is run without a load?
It maintains a constant speed
It operates efficiently
It can "run away" and cause damage
It shuts down automatically
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which type of DC motor maintains a constant speed regardless of load changes?
DC Series Motor
Universal Motor
DC Shunt Motor
Compound Motor
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a compound wound motor, what is the purpose of the series winding?
To provide high starting torque
To maintain constant speed
To reduce current flow
To increase efficiency
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key characteristic of a short compound motor?
Both windings are connected in parallel
Provides significant torque boost under heavy loads
Difficult to control speed
Operates only on AC
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