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Motors

Authored by Muhammed Bilgin

Physics

8th Grade

NGSS covered

Used 6+ times

Motors
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20 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main purpose of a motor?

Convert mechanical energy into electrical energy
Convert electrical energy into mechanical energy
Create heat from mechanical motion
Convert sound into electrical energy

Tags

NGSS.HS-PS3-3

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the role of an armature in a DC motor?

To convert mechanical energy into electrical energy
To transfer current from the brushes to the commutator
To spin and create rotary motion
To store electrical energy

Tags

NGSS.HS-PS3-5

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following changes the direction of the current in a DC motor?

The armature
The permanent magnets
The commutator
The brushes

Tags

NGSS.HS-PS3-5

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens when like magnetic poles are placed near each other?

They attract
They repel
They combine
They neutralize each other

Tags

NGSS.MS-PS2-5

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the function of a brush in a DC motor?

To provide a magnetic field
To transfer power from the source to the commutator
To spin the motor
To store mechanical energy

Tags

NGSS.HS-PS3-5

NGSS.HS-PS2-5

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does an electromagnet differ from a permanent magnet?

An electromagnet’s poles can change based on the current direction
A permanent magnet's poles can change direction
Electromagnets do not use electricity
Permanent magnets are more powerful than electromagnets

Tags

NGSS.HS-PS3-5

NGSS.HS-PS2-5

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of energy conversion takes place in a generator?

Electrical energy to mechanical energy
Mechanical energy to electrical energy
Thermal energy to mechanical energy
Chemical energy to electrical energy

Tags

NGSS.HS-PS3-3

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