UK Electrical Generation System Quiz

What is the frequency of the alternating current (AC) produced by the rotor in the UK electrical generation system?

• 60 hertz

• 50 hertz

• 40 hertz

• 30 hertz

At what speed does the rotor turn in the UK electrical generation system?

• 2,000 revolutions per minute

• 3,000 revolutions per minute

• 4,000 revolutions per minute

• 5,000 revolutions per minute

What is the maximum voltage to which the transformer can step up the voltage in the UK electrical generation system?

• 100,000 volts

• 200,000 volts

• 300,000 volts

• 400,000 volts

What is the voltage level to which the National Grid transforms the electrical supply before distributing it to local sub-stations?

• 5kV

• 11kV

• 15kV

• 20kV

What is used to measure energy consumption in a dwelling?

• A standard fuse

• A sealed energy meter

• A circuit breaker

• A voltage regulator

Who owns the part of the installation that includes the supplier's fuse and meter tails?

• The homeowner

• The electricity supplier

• The local government

• The construction company

What are the two conductors mentioned in the supply cable to the property?

• Live and Earth

• Live and Neutral

• Neutral and Earth

• Phase and Earth

What is the primary function of the earth cable?

• To provide power to appliances

• To act as a protective conductor

• To supply electricity to the consumer unit

• To connect the main electrical supply

What does equipotential bonding ensure?

• All metal parts are at different potentials

• All metal parts are at the same potential

• Only the consumer unit is earthed

• Only the main earth bar is connected

Why does the consumer unit need an earth?

• To provide power to the circuits

• To ensure circuits have their own earth

• To connect to the main electrical supply

• To act as a backup power source