Practice Test

What is electricity?

• Electricity is a type of energy storage.
• Electricity is the flow of electric charge.
• Electricity is a form of renewable energy.

Electromagnetic Induction _.

• is the process of generating heat from a static magnetic field.
• is the process of generating electric current from a changing magnetic field.
• is the method of creating magnetic fields using electric current.

What is the difference between open circuit and short circuit?

• An open circuit is a type of short circuit; both allow current to flow.
• An open circuit and a short circuit are the same; they both prevent current flow.
• An open circuit prevents current flow; a short circuit allows excessive current flow.

How can a community experience a power outage?

• short circuits in electrical grids

• open circuits in electrical grids

• accidentally grounding electricity and losing power to surroundings

• all of the above

Most power plants in US (wind, nuclear, gas) create power through electromagnetic induction. This means _

• electricity is generated by burning fossil fuels.
• electricity is generated by chemical reactions in batteries.
• electricity is generated by rotating turbines in a magnetic field.

Energy cannot be created nor destroyed, it can only be _

• ignored
• transformed
• destroyed
• created

A power plant has 3% of electrical energy lost to its surrounding. This means that most of this energy was transformed to unusable _ energy.

• chemical

• heat
• mechanical

Electrical grounding means _.

• the method of connecting to a wireless network
• the process of digging a hole in the ground
• the process that allows excessive electricity in a circuit to connect and flow to the earth

What are the most common energy sources in Texas?

• Hydroelectric, geothermal, and biomass
• Solar power, biomass, and nuclear

• Natural gas, wind power, and solar

What factors are most important in energy reliability?

• Limited energy sources
• Stability of supply, % output, control of supply

• High energy prices