National Grid Network

Electricity is generated at a .......

• power station

• petrol station

• power source

• source of energy

Transformers on distribution poles .............. voltage for use in homes.

• step down

• step up

• step right

• step left

Electricity is sent over ............... transmission lines.

• low voltage

• no voltage

• high voltage

Transmission ................ carry the transmission lines

• poles

• transformers

• boxes

• pylons

If the current is transmitted at high voltage...

• less energy is lost

• more energy is lost

• it produces alternating current

• underground cables are used

Generators normally produce...

• Alternating current

• Direct current

Which of these might spin a generator at a power plant to produce electricity?

• wind

• water

• steam from burning coal

• all of these

Below is the advantages of grid systems in power system except:

• Economy

• Stability in operation

• Service continuity

• Increase Power Storage

In a thermal power plant, coal, oil, natural gas or uranium are used to heat what?

• water

• oil

• air

• the turbine

Energy production in thermal power plants as well as with hydroelectric, wind and wave or tidal power all produce electricity by

• turning a turbine that runs the generator to make electricity that is taken to homes and businesses through transmission lines

• the energy source directly runs the generator that then turns a turbine which produces the electricity that is taken to homes and businesses through transmission lines

• the energy source is converted by a heater then the electricity is sent out to the homes and businesses through transmission lines

• the energy source is used to power batteries that store energy, when you flip on a light or run electricity at your home, the battery sends the energy through transmission lines.