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WorksheetsPPT 7 Electrical Quiz
Total questions: 37
Worksheet time: 19mins
What is one of the checks learners must perform on electrical equipment?
Check the warranty
Check the brand
Check proper construction in accordance with system requirements
Check the color
What is the run current if a bore hole pump is fed by a 230V supply and has a power rating of 0.75 kW? Convert power to watts
3.26A
2.50A
4.00A
5.00A
What does the On-site Guide provide for electricians?
Detailed installation procedures
Information not in BS 7671:2018
Complete wiring diagrams
Safety equipment guidelines
Who is required to carry out the formal selection of cable size?
A novice electrician
An experienced electrician
A construction worker
A plumber
What is the overcurrent protective device rating for an A1 Ring circuit?
20 A
30 or 32 A
40 A
50 A
What is the minimum live conductor cross-sectional area for a copper conductor thermoplastic insulated cable in an A2 Radial circuit?
1.5 mm²
2.5 mm²
4 mm²
6 mm²
What is the maximum floor area served by an A3 Radial circuit?
50 m²
75 m²
100 m²
125 m²
What is required to complete the full cable sizing process?
A basic understanding of electricity
A competent electrician
A standard calculator
A detailed manual
What is the conductor cross-sectional area for a cable clipped direct with a reference method C and a size of 6 mm²?
20
27
37
47
Which reference method involves cables enclosed in conduit in an insulated wall?
C
B*
A
102
What is the recommended cable size for lighting ?
1.5mm² twin and earth
2.5mm² twin and earth
6.0mm² twin and earth
10.0mm² twin and earth
Which cable size is suitable for a ring final main?
1.5mm² twin and earth
2.5mm² twin and earth
6.0mm² twin and earth
10.0mm² twin and earth
What is the cable size recommended for a smaller electric shower (7kW)?
1.5mm² twin and earth
2.5mm² twin and earth
6.0mm² twin and earth
10.0mm² twin and earth
For a larger electric shower (11kW), which cable size should be used?
1.5mm² twin and earth
2.5mm² twin and earth
6.0mm² twin and earth
10.0mm² twin and earth
What is the term used to describe the amount of current a cable can safely carry?
Voltage capacity
Current carrying capacity
Power rating
Load limit
Which factor determines that a cable must carry the full load current?
Type of cable
Installed conditions
Design current, I_b
Surrounding temperature
What type of cable includes PVC, MIMS, copper conductors, or aluminium conductors?
Installed conditions
Type of cable
Surrounding temperature
Type and size of protection
Which factor involves cables being clipped to the surface or installed with other cables in trunking?
Design current, I_b
Type of cable
Installed conditions
Type and size of protection
What happens to cable resistance as the surrounding temperature increases?
It decreases
It remains constant
It increases
It fluctuates
Which factor considers how long a cable will have to carry fault current?
Design current, I_b
Type of cable
Installed conditions
Type and size of protection
What does the first digit in an IP rating represent?
Intrusion protection
Moisture protection
Temperature resistance
Electrical conductivity
What does the second digit in an IP rating indicate?
Intrusion protection
Moisture protection
Temperature resistance
Electrical conductivity
What does the 'X' in an IP 'X' rating signify?
A missing value
High protection level
Low protection level
Temperature resistance
What does an ingress protection rating of 0 indicate?
No special protection
Protection against large body parts
Protection against dust
Protection against tools and wires
Which ingress protection rating provides protection against solid objects larger than 1mm?
4
2
5
3
What is the ingress protection rating for being totally dust-tight?
6
5
4
3
At which ingress protection rating is there protection from entry by tools and wires with a diameter of 2.5mm or more?
3
2
4
5
What does a moisture protection rating of 0 indicate?
No protection
Protection against vertically falling droplets
Protection against water splashes from all directions
Protection against low-pressure jets
Which moisture protection rating provides protection against vertically falling droplets?
1
2
3
4
What is the maximum angle from vertical for protection against water droplets ?
15 degrees
30 degrees
45 degrees
60 degrees
For how long is the protection against water splashes tested in rating 4?
10 minutes
5 minutes
15 minutes
20 minutes
What is the diameter of low-pressure jets in rating 5?
6.3mm
5.0mm
7.5mm
8.0mm
What does protection rating 6 provide protection against?
Full immersion for up to 30 minutes
Direct high-pressure jets
High-temperature jet sprays
Extended immersion under higher pressure
For how long does protection rating 7 allow full immersion?
Up to 10 minutes
Up to 20 minutes
Up to 30 minutes
Up to 40 minutes
What additional factors may be included in the parameters for protection rating 8?
Color and size
Temperature fluctuations and flow rates
Weight and height
Speed and distance
Which fan is most suitable for installation within zone 2 of a shower?
Link 1: www.vent-axia.com/range/bas100-range
Link 2: www.vent-axia.com/range/lo-carbon-led-vent-light
Both links are equally suitable
Neither link is suitable
Can the fan in link 1 be fitted in zone 2?
Yes, without any conditions
No, it cannot be fitted
Yes, with local authority approval and a minimum rating of IPX4
Yes, if it is installed by a certified electrician
