Simple Electric Motor and Generator

What are the three basic parts of an electric generator?

• commutator, stator, and motor shaft

• armature, brushes, and battery

• stator, rotor, and commutator

• battery, armature, and DC power supply

Tags

NGSS.HS-PS3-3

What do you call a device that generates electrical current when a wire coil is wrapped around an iron core and rotated close to a magnet?

• car

• magnet

• motor

• generator

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Which of the following is the correct explanation of the electrical motor operation?

• Electric motor uses electricity.

• The operation is based on the principle of electromagnetism.

• The motor converts electric energy into mechanical energy

• All of the above

Tags

NGSS.HS-PS3-5

What do you call a huge wheel (associated with generators) that rotates when driven by water, wind, or steam?

• Motor

• Pipe

• Turbine

• Magnet

Tags

NGSS.HS-PS3-3

NGSS.HS-ETS1-3

Which of the following are the components of a simple electric motor and generator?

• Armature, Brushes, Commutator, Field Magnets, Blade

• Armature, Brushes, Commutator, Field Magnets

• Armature, Brushes, Commutator, Field Magnets, Light Bulb

• Armature, Brushes, Commutator, Field Magnets, Turbine

Tags

NGSS.HS-PS3-5

Which of the following differentiates electric motor and generator?

• The generator transforms mechanical into electrical energy, whereas the electric motor does the opposite.

• The generator transforms electrical to mechanical energy and vice versa.

• An electric motor is an electrical machine that takes resistance and current into force and velocity while a generator does the opposite.

• The electric motor takes resistance and voltage and transforms it in force and velocity whereas the generator does the opposite.

Tags

NGSS.HS-PS3-3

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

What must the student do in the picture, in order to induce electricity and move the the galvonometer

• nothing

• move the magnet

• add more loops of wire

• unplug the galvnonmeter

Tags

NGSS.HS-PS2-5

What is the primary function of a commutator in a simple electric motor?

• To convert AC to DC

• To reverse the direction of current

• To increase voltage

• To decrease resistance