Electrical Generation Process Quiz

What is the role of a transformer in the electrical generation process?

• It decreases the electromotive force.

• It increases the electromotive force.

• It converts AC to DC.

• It generates electricity.

From what voltage to what voltage does the transformer increase the electromotive force?

• From 22,000 volts to 275,000 volts.

• From 22,000 volts to 400,000 volts.

• From 275,000 volts to 400,000 volts.

• From 22,000 volts to 500,000 volts.

Which of the following is NOT a source of renewable energy mentioned in the document?

• Solar

• Wind

• Oil

• Hydro/waves

What causes the current to flow in the electrical generation process?

• The generator

• The electromotive force

• The power station

• The turbine

What is the purpose of transmitting electricity at very high voltages?

• To reduce power loss through power lines

• To increase power loss through power lines

• To reduce the cost of electricity

• To increase the cost of electricity

What are the voltage levels of the supergrid mentioned in the document?

• 400kV and 275kV

• 132kV and 33kV

• 11kV and 400V

• 230V and 400V

What is the typical voltage for a large commercial building?

• 400V

• 230V

• 132kV

• 11kV

What is the typical voltage for domestic dwellings?

• 230V

• 400V

• 132kV

• 11kV

What is the role of sub-stations in the National Grid?

• They generate electricity.

• They distribute electricity directly to homes.

• They transform the electrical supply down to 11kV and distribute it to local sub-stations.

• They store electricity for future use.

What is the final voltage level at which electricity is distributed to customers?

• 400 kV

• 11 kV

• 33 kV

• 400V