Elec ppt2

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

• 132kV and 33kV

• 400kV and 275kV

• 11kV and 400V

• 230V and 400V

What is the voltage level at the grid stage?

• 11kV

• 33kV

• 132kV

• 400V

What is the purpose of local sub-stations in the distribution network?

• To generate electricity

• To transform supply down to 400V

• To store electricity

• To increase voltage to 132kV

What is the theoretical benefit of equipotential bonding?

• Increased power output

• Reduced electrical shock risk

• Enhanced circuit complexity

• Improved insulation

What is the role of the earth cable in relation to fault current?

• To block fault current

• To provide a path for fault current

• To increase fault current

• To decrease fault current

Which earthing system involves a separate neutral?

• TN-S

• TN-C-S

• TT

• TN-R

What does the 'T' in TN-S and TN-C-S stand for?

• Terra

• Test

• Terminal

• Transfer