Electrical Engineering Quiz

How much current would flow in a circuit having 10 Ω resistance and a 230 V supply?

• 23 A

• 10 A

• 15 A

• 30 A

How much current would be drawn by a 3 kW, 230 V water heater?

• 13.0 A

• 10.0 A

• 15.0 A

• 20.0 A

Which non-statutory document gives 'Requirements for Electrical Installations'?

• BS 7671

• BS 1234

• BS 4321

• BS 6789

What does RCD stand for?

• Residual Current Device

• Random Circuit Device

• Reactive Current Device

• Rotational Circuit Device

What is a common rating of circuit breaker used to protect a 230 V, 3 kW immersion heater radial circuit?

• 32 A

• 20 A

• 25 A

• 40 A

What class of electrical power tools require a connection to the earth of a socket outlet?

• Class I

• Class II

• Class III

• Class IV

What is a proving unit used for when undertaking safe and secure isolation of an electrical supply?

• To prove the voltage is disconnected

• To increase the voltage

• To decrease the voltage

• To measure the current

What wording should be on the label attached to a bonding clamp?

• Safety Bond

• Danger High Voltage

• Earth Connection

• Do Not Remove

What are the identification colours of the two conductors connected to the micro-switch within a zone valve?

• Red and black

• Blue and brown

• Green and yellow

• White and grey

What device is used to monitor ambient air temperatures in a heating system?

• Barometer

• Hygrometer

• Room thermostat

• Anemometer