Electrical Installation LEVEL 2
EXAM STUDY GUIDE 2026/2027
COMPLETE QUESTIONS WITH
VERIFIED CORRECT ANSWERS ||
100% GUARANTEED PASS
<NEWEST VERSION>
1. Which Regulation is non-statutory? - ANSWER ✔ Requirements for the
Electrical Installations BS 7671 - BS usually means not statutory.
2. Which may become a land pollutant if not contained safely? - ANSWER ✔
Mercury
3. Which type of fire extinguisher would have a red band? - ANSWER ✔
Water.
CO2 Is Black
Foam Is Cream
Powder Is Blue
4. Who is responsible for organising construction work on a building sight? -
ANSWER ✔ Site Manager.
, Quality Inspector checks over
Principle Architect designs it
Clerk of Works reports to senior managers
5. What is the SI unit of measurement for capacitance? - ANSWER ✔ Farad
Current is Ampere
Inductance is Henry
Magnetic Flux is Webber
6. Which electrical item would most commonly contain a permanent magnet?
a Float switch in a water tank
b Dimmer switch on a lighting circuit
c Shower isolator in a bathroom
d Security contact on a door - ANSWER ✔ Security contact on a door
7. What does the thumb in Fleming's right hand rule represent the direction of?
- ANSWER ✔ Motion
8. What force would be created by a current of 9.15 A flowing through 1800
mm of conductor with a flux density of 0.35 T? - ANSWER ✔ 5.76N
9.15 x 1.8 x 0.35
9. What is the formula used to calculate the RMS voltage on a 50 Hz sine
wave? - ANSWER ✔ V = Peak / square root of 2
,10.A transformer has 239 primary and 29 secondary turns and has a secondary
voltage of 400 V? - ANSWER ✔ 3300
Answer x 400
11.Which component can be made by connecting four diodes? - ANSWER ✔
Bridge rectifier
12.Main role of architect - ANSWER ✔ S/he is the designer of the project and
considered the leader of the management team.
They convert the clients' ideas and requirements into a building design and
working drawings.
13.Who signs a variation order? - ANSWER ✔ Clerk of works.
14.Who out of the construction team will visit site on occasions and on behalf
of the local authority in order to confirm that the Building Regulations are
being observed? - ANSWER ✔ Building control officer (BCO) or surveyor.
15.If a sub-contractor has an installation problem that needs resolving, who
would he ask for advice? - ANSWER ✔ Main contractor
16.What does the building services engineer do? - ANSWER ✔ They design
the internal services within the building, which will be cost effective,
environmentally sensitive and with good maintenance access. They will be
responsible for: heating and ventilation, plumbing, electrical distribution,
fire protection, lifts, escalators, acoustics.
, 17.Describe the difference between the role of the buyer and the estimator. -
ANSWER ✔ The buyer will source all the materials needed to complete a
project, by obtaining quotations from suppliers for materials, with delivery
times and quality assurance.
The estimator will break down the Bill of Quantities into unit parts which
represent the amount it will cost a contractor to complete each stage.
18.Which trade area would install a lintel? - ANSWER ✔ bricklayer
19.Which trade area would install an air conditioning unit? - ANSWER ✔
Heating and vent fitter
20.State the role of the site supervisor. - ANSWER ✔ The building contractors'
main representative on site, S/he is responsible for the day to day running of
the site, including budgets, hiring, deliveries and construction duties.
21.State the role of the trade supervisor. - ANSWER ✔ Allocation of duties
Coordinate with other trades
Attendance records
Explaining and enforcing regulations
Overseeing workforce
Resolving problems and grievances
22.Who will visit the site on occasions, on behalf of the local authority, to
confirm that the Building Regulations are being observed? - ANSWER ✔
Building control officer (BCO)
23.Who will visit the site on occasions to ensure that the site and complies with
Health and Safety legislation? - ANSWER ✔ HSE inspector
EXAM STUDY GUIDE 2026/2027
COMPLETE QUESTIONS WITH
VERIFIED CORRECT ANSWERS ||
100% GUARANTEED PASS
<NEWEST VERSION>
1. Which Regulation is non-statutory? - ANSWER ✔ Requirements for the
Electrical Installations BS 7671 - BS usually means not statutory.
2. Which may become a land pollutant if not contained safely? - ANSWER ✔
Mercury
3. Which type of fire extinguisher would have a red band? - ANSWER ✔
Water.
CO2 Is Black
Foam Is Cream
Powder Is Blue
4. Who is responsible for organising construction work on a building sight? -
ANSWER ✔ Site Manager.
, Quality Inspector checks over
Principle Architect designs it
Clerk of Works reports to senior managers
5. What is the SI unit of measurement for capacitance? - ANSWER ✔ Farad
Current is Ampere
Inductance is Henry
Magnetic Flux is Webber
6. Which electrical item would most commonly contain a permanent magnet?
a Float switch in a water tank
b Dimmer switch on a lighting circuit
c Shower isolator in a bathroom
d Security contact on a door - ANSWER ✔ Security contact on a door
7. What does the thumb in Fleming's right hand rule represent the direction of?
- ANSWER ✔ Motion
8. What force would be created by a current of 9.15 A flowing through 1800
mm of conductor with a flux density of 0.35 T? - ANSWER ✔ 5.76N
9.15 x 1.8 x 0.35
9. What is the formula used to calculate the RMS voltage on a 50 Hz sine
wave? - ANSWER ✔ V = Peak / square root of 2
,10.A transformer has 239 primary and 29 secondary turns and has a secondary
voltage of 400 V? - ANSWER ✔ 3300
Answer x 400
11.Which component can be made by connecting four diodes? - ANSWER ✔
Bridge rectifier
12.Main role of architect - ANSWER ✔ S/he is the designer of the project and
considered the leader of the management team.
They convert the clients' ideas and requirements into a building design and
working drawings.
13.Who signs a variation order? - ANSWER ✔ Clerk of works.
14.Who out of the construction team will visit site on occasions and on behalf
of the local authority in order to confirm that the Building Regulations are
being observed? - ANSWER ✔ Building control officer (BCO) or surveyor.
15.If a sub-contractor has an installation problem that needs resolving, who
would he ask for advice? - ANSWER ✔ Main contractor
16.What does the building services engineer do? - ANSWER ✔ They design
the internal services within the building, which will be cost effective,
environmentally sensitive and with good maintenance access. They will be
responsible for: heating and ventilation, plumbing, electrical distribution,
fire protection, lifts, escalators, acoustics.
, 17.Describe the difference between the role of the buyer and the estimator. -
ANSWER ✔ The buyer will source all the materials needed to complete a
project, by obtaining quotations from suppliers for materials, with delivery
times and quality assurance.
The estimator will break down the Bill of Quantities into unit parts which
represent the amount it will cost a contractor to complete each stage.
18.Which trade area would install a lintel? - ANSWER ✔ bricklayer
19.Which trade area would install an air conditioning unit? - ANSWER ✔
Heating and vent fitter
20.State the role of the site supervisor. - ANSWER ✔ The building contractors'
main representative on site, S/he is responsible for the day to day running of
the site, including budgets, hiring, deliveries and construction duties.
21.State the role of the trade supervisor. - ANSWER ✔ Allocation of duties
Coordinate with other trades
Attendance records
Explaining and enforcing regulations
Overseeing workforce
Resolving problems and grievances
22.Who will visit the site on occasions, on behalf of the local authority, to
confirm that the Building Regulations are being observed? - ANSWER ✔
Building control officer (BCO)
23.Who will visit the site on occasions to ensure that the site and complies with
Health and Safety legislation? - ANSWER ✔ HSE inspector
