Electrical Installations and Renewable Energy Quiz

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

• 1 A
• 10 A
• 23 A
• 230 A

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

• 6.5 A
• 13.0 A
• 23.0 A
• 30.0 A

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

• IET Wiring Regulations
• BS 7671
• Building Regulations
• EN 60364

What does RCD stand for?

• Residual Current Detector
• Residual Circuit Disconnect
• Residual Circuit Device
• Residual Current Device

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

• 16 A
• 20 A
• 25 A
• 32 A

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

• Class 0
• Class I
• Class II
• Class III

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

• To test the voltage is disconnected
• To check the earth continuity
• To measure the insulation resistance
• To verify the polarity

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

• Thermostat
• Thermistor
• Thermometer
• Hygrometer

What is the typical content of methane within natural gas?

• 75%
• 85%
• 90%
• 95%

Which coal type has the highest heat content (kW/kg)?

• Bituminous
• Anthracite
• Lignite
• Peat