WorksheetsElectrical Systems Quiz
Total questions: 43
Worksheet time: 22mins
In plumbing and electrical systems, when performing a continuity test, would you expect:
A very high reading
No reading at all
A variable reading
A very low reading
When working with electrical systems in plumbing installations, the maximum exposed tip of test probes on a multimeter should be:
1mm
2mm
3mm
4mm
In plumbing and electrical systems, when a section of pipework has been removed, which of the following should be used to ensure safety and continuity?
Permanent polarity bonding
Permanent earth continuity bonding
Temporary polarity bonding
Temporary earth continuity bonding
In a bathroom, a radiator installed near a shower may require:
Supplementary bonding
Main bonding
Minor bonding
Additional bonding
Where is an MCB typically installed in a domestic electrical system?
Consumer unit
Outside socket
Extension lead
Electric shower
The design, installation and testing of plumbing and electrical systems is covered by:
BS6700
BS1212
BS7671
BS7176
In electrical installations, the neutral conductor is identified by the insulation being coloured:
Red
Green/yellow
Blue
Brown
The relationship between current, resistance and voltage in electrical circuits is stated in:
Boyle’s law
Ohm’s law
Charge’s law
BS7671
A domestic consumer unit for plumbing and electrical systems should be installed:
Only where there is a high demand for water and electricity
Immediately before the main water shut-off valve
On each individual plumbing fixture
Immediately after the main electrical and water meters
Identify this electrical component used in bathroom installations.
Illuminated fused spur
Double pole pull cord switch
Single pole rocker plate pull switch
Wiring centre pull cord
Which one of the following electrical appliances should have its own dedicated circuit in a plumbing and electrical installation?
Immersion heater
Bathroom light
Free-standing fan heater
Gas boiler
A water heater, with a rating of 690watt, 230v, 50Hz has been fitted with a 13 amp fuse. Would you:
Leave it as it is
Change it for a 3 amp fuse
Fit a 16 amp MCB to protect it
Warn customer not to touch it
Which one of the following plumbing or electrical systems could be interrupted by a disconnection of 400v three-phase supply?
Heating of domestic hot water via immersion
Domestic lighting
Industrial process
Domestic ring main
What is the standard voltage supply for residential electrical systems?
415v three phase AC
240v single phase DC
230v single phase AC
110v single phase AC
In plumbing and electrical systems, which device can be used to control the flow of electricity through both the live and neutral wires?
Double pole switch
Single pole switch
MCB
Ring circuit
What is the unit of electrical resistance in plumbing and electrical systems relevant to unit 202/502?
Volt
Watt
Ampere
Ohm
In plumbing and electrical systems, which of the following materials is typically a non-conductor of electricity?
Copper
Aluminum
Plastic
Gold
What is the purpose of a residual current device (RCD) in plumbing and electrical systems?
To prevent overloading of circuits
To detect earth faults and disconnect the circuit
To provide backup power supply
To regulate voltage levels
Which of the following is a common type of circuit breaker used in domestic electrical installations?
Oil circuit breaker
Air circuit breaker
Vacuum circuit breaker
Miniature circuit breaker (MCB)
What is the standard voltage supply for electrical installations in residential plumbing systems in the UK?
110 volts
230 volts
400 volts
600 volts
What is the primary function of a pressure relief valve in a plumbing system?
To store water
To convert water pressure to electrical energy
To prevent pressure overload
To increase water pressure
Which color is used to identify the live conductor in electrical installations according to modern standards?
Blue
Brown
Red
Green/yellow
What device is used to measure water flow in a plumbing system?
Voltmeter
Flowmeter
Ammeter
Ohmmeter
What is the primary function of a pressure regulator in a plumbing system?
To store water
To increase or decrease water pressure
To convert water flow direction
To measure water temperature
Which of the following materials is commonly used as an insulator in plumbing and electrical installations?
Steel
Copper
Aluminum
Rubber
What is the purpose of an RCD in a plumbing and electrical system?
To increase water pressure
To protect against electrical earth faults
To convert AC to DC
To store electrical energy
Which of the following materials is commonly used as an insulator in plumbing and electrical applications?
Aluminum
Rubber
Copper
Steel
What is the function of a circuit breaker in a plumbing and electrical system?
To amplify the water flow
To protect the system from overload
To convert electrical energy to heat
To store electrical energy
What is the recommended height for installing electrical outlets in a residential building as per unit 202/502 standards?
450mm-1200mm
200-500mm
650mm-1650mm
500mm-1400mm
To ensure accessibility for wheelchair users, plumbing fixtures and electrical outlets should be at least........ from the room corner?
300mm
250mm
350mm
400mm
Which material is commonly used for electrical conduit in plumbing and electrical installations?
Polybutylene
fire resistant ABS
rubber
copper
Earlier electrical switches were made of which material?
bakelite
metal
rubber
PVC
What type of electrical isolation is required for a central heating boiler in terms of plumbing and electrical safety?
13 amp isolator
20 amp isolator
Double pole
Triple pole
In plumbing and electrical systems, a double pole switch is used to isolate which of the following?
The Live and Neutral
The live only
The live and earth
The neutral and earth
In plumbing and electrical systems, a single pole isolator is used to isolate which component?
live and neutral
earth
neutral
live
Identify this electrical device used for protection in circuits.
MCB
RCD
RCBO
Cartridge fuse
Identify this electrical component used for circuit protection.
Cartridge fuse
MCB
RCD
Cylinder trip
What is this tool used for in electrical safety procedures?
Rectify electrical faults
Test light switches
Safe isolation
Test sockets
In plumbing and electrical systems, what does reversed polarity refer to?
when the hot and cold water lines are reversed
when the live and earth wires are reversed
when the live and neutral wires are reversed
when a blue wire is used for grounding
what electrical system is this?
TT system
TNC system
TNCS system
TTCS system
What electrical system is this?
TT system
TNCS system
TNS system
TTTS system
What type of system is this?
TTTS system
TNS system
TT system
TNCS system
What is this?
Cartridge fuse
MCB
RCBO
RCD
