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WorksheetsDiscovering DC Motors
Total questions: 10
Worksheet time: 10mins
What is a part of a DC motor that helps it spin?
Bearing
Commutator
Stator
Rotor
What do we call the main part that turns in a DC motor?
commutator
stator
rotor
armature
How does a DC motor get its power?
A DC motor gets its power from an alternating current (AC) supply.
A DC motor gets its power from a direct current (DC) electrical supply.
A DC motor gets its power from a mechanical source like a wind turbine.
A DC motor gets its power from a battery that uses solar energy.
What type of DC motor can change speed easily?
AC motor
DC shunt motor
DC series motor
Stepper motor
What is a common use for DC motors in toys?
To charge batteries in toys.
To power lights in toys.
To control sound effects in toys.
To provide movement in toys.
What is one advantage of using a DC motor?
High starting torque
Low efficiency at high speeds
Higher maintenance costs
Limited control over speed
What type of DC motor is used for high torque?
Shunt-wound DC motor
Stepper motor
Permanent magnet DC motor
Series-wound DC motor
What part of the DC motor helps to create a magnetic field?
Field windings or permanent magnets
Rotor
Stator
Commutator
What do we call the device that controls the speed of a DC motor?
DC motor inverter
DC motor regulator
DC motor controller
DC motor driver
Why are DC motors popular in small machines?
DC motors are too large for small machines.
DC motors are less efficient than AC motors.
DC motors require complex control systems.
DC motors are favored in small machines for their simplicity, compactness, and ease of control.
