Electric motors

What must be complete for a circuit to work?

• The path of the circuit

• A battery must be fully charged

• A light bulb must be present

• The circuit must be connected to a motor

What happens when the poles of an electromagnet are reversed?

• The electromagnet loses its magnetic properties

• The electromagnet stops conducting electricity

• The electromagnet becomes a permanent magnet

• North becomes south and south becomes north

What is the role of a commutator in an electric motor?

• To convert electrical energy into light

• To switch the direction of current flow automatically

• To cool down the motor

• To increase the motor's speed

What is the purpose of adding more loops to the armature?

• To increase the motor's torque

• To make the motor quieter

• To decrease the motor's speed

• To make the motor lighter

Tags

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What can be used to improve the torque of a motor?

• Decreasing the electricity

• Using fewer wires

• Removing the commutator

• Wrapping more wires around

Tags

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What type of motor was primarily discussed in the video?

• AC motor

• DC motor

• Stepper motor

• Brushless motor

What happens when you disconnect the battery from the motor?

• The motor speeds up

• The motor changes direction

• The spinning stops

• The motor becomes an electromagnet

Tags

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What is the effect of reversing the polarity of an electromagnet?

• It decreases the magnetic field strength

• It switches the north and south poles

• It increases the magnetic field strength

• It causes the electromagnet to spin