PLTW Motors and Generators

Generators are devices that convert _____ energy into _____ energy.

• chemical; mechanical
• mechanical; electrical
• electrical; mechanical
• potential; kinetic

Tags

NGSS.HS-PS3-3

Electric motors are devices that convert _____ energy into  _____ energy.

• electrical; mechanical
• mechanical; electrical
• chemical; potential
• mechanical; kinetic

Tags

NGSS.HS-PS3-3

NGSS.HS-PS3-5

In a _______ a spinning turbine moves magnets which generates an electric current.

• Motor

• Generator

Tags

NGSS.MS-PS3-5

In an electric motor, the energy transformation begins as  ----

• electrical and becomes chemical
• mechanical and becomes electrical
• electrical and becomes mechanical
• mechanical and becomes chemical

a motor converts electrical current into

• chemical energy

• chemical force

• mechanical force

• mechanical life

electric generators converts mechanical force into

• mechanical energy

• magmatism

• electric current

• electric energy

Tags

NGSS.HS-PS3-3

Which best describes how a motor works?

• When a fan blows on a wire, it causes it to spin, creating a force.

• When a fan blows on a wire, it causes it to spin, creating an electrical current.

• When a wire that carries electrical current is placed in zero gravity, the wire experiences a force.

• When a wire that carries electrical current is placed in a magnetic field, the wire experiences a force.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Which statement best explains the flow of energy through a motor?

• battery-->electrical current-->copper wire rotor -->magnet--> mechanical energy

• battery--> magnet--> electrical current--> copper wire rotor--> mechanical energy

• magnet--> mechanical energy--> copper wire rotor--> battery--> electrical current

• magnet--> copper wire rotor--> mechanical energy--> battery--> electrical current

Tags

NGSS.MS-PS3-5

Which of the following are true for motors? Select all that apply.

• Motors transform electrical energy into mechanical energy.

• Motors contain an electromagnet that spins between a permanent magnet.

• Motors transform chemical energy into electrical energy.

• A motor spins due to the attraction and repulsion of magnets.

Tags

NGSS.MS-PS3-5

Which of these pairs of devices operate in reverse of each other?

• generator and motor
• generator and electromagnet
• motor and electromagnet
• electromagnet and resistor