City And Guilds 2382 (17th Edition) Example Questions.
The City & Guilds 2382 exam comprises of 60 random multiple choice questions. Commonly known as the 17th Edition it is a requirement for any serious electrician. The duration of the exam is 120 minutes giving an average of 2 minutes per question. The following mock exam generates a random selection of 60 questions from a database of over 500 ! Enjoy and GOOD LUCK
- 1.Requirements are included in BS 7671 for electrical installations of
- A.
Lift installations
- B.
Mobile offshore electrical systems
- C.
Distributor's networks
- D.
Locations containing a bath or shower
- 2.Which of the following is excluded from the scope of BS 7671?
- A.
Cabins containing sauna heaters
- B.
Fountains
- C.
Highway power supplies
- D.
Lightning protection
- 3.Which of the following is not included in BS 7671?
- A.
Demolition site installations
- B.
Electric fences
- C.
Medical locations
- D.
Motor caravans
- 4.Which of the following documents is non-statutory?
- A.
Electricity Safety, Quality and Continuity Regulations
- B.
Electricity at Work Regulations
- C.
The Building Regulations
- D.
Requirements for Electrical Installations
- 5.Protective equipotential bonding is achieved by
- A.
Preventing current from passing through the body
- B.
Ensuring adequate continuity between extraneous conductive parts
- C.
Automatic disconnection of supply in the event of a fault
- D.
Separation of equipment from the supply using a safety isolating transformer
- 6.The type of earthing arrangements requiring a consumer’s earth electrode to be installed is where
- A.
No earth facility is supplied by the distributor
- B.
The supply is from a low voltage generator
- C.
Earthing is via the distributor’s cable armour
- D.
The electrical system is TN-C
- 7.Low-voltage is defined in BS 7671 as having a value exceeding
- A.
24V ac
- B.
48V ac
- C.
50V ac
- D.
120V ac
- 8.Tables showing the classification of external influences when considering environmental conditions during the design of an installation can be found in BS 7671
- A.
Chapter 32
- B.
Chapter 53
- C.
Appendix 4
- D.
Appendix 5
- 9.An assessment must be made of harmful effects on other electrical systems when installing
- A.
Large electric motors
- B.
Fire alarm systems
- C.
Emergency lighting circuits
- D.
Reduced low voltage supplies
- 10.For a 32A ring final circuit in similar premises to a dwelling, the minimum size of thermoplastic insulated copper live conductors allowed is
- A.
1.0mm2
- B.
1.5mm2
- C.
2.5mm2
- D.
4.0mm2
- 11.In a domestic dwelling a 32A ring final circuit incorporating BS 1363 socket-outlets historically serves a floor area up to
- A.
75m2
- B.
100m2
- C.
50m2
- D.
200m2
- 12.The following final circuits are to be installed using thermoplastic insulated multicore non-armoured cables 3 x 6A lighting 1 x 20A UPS supply 3 x 32A ring 1 x 40A cooker If the cables are enclosed in a non-metalic trunking where entering the distribution board, how many live conductors would be enclosed?
- A.
9
- B.
16
- C.
22
- D.
32
- 13.The required current carrying capacity of a three-phase circuit conductor Iz is 26A. From the correct table, the minimum size of three single-core thermoplastic covered, heavy duty MICC cables, installed flat on a perforated cable tray and spaced by two cable diameters is
- A.
1.0mm2
- B.
1.5mm2
- C.
2.5mm2
- D.
4.0mm2
- 14.Which of the following is not a characteristic of the supply?
- A.
Nominal voltage
- B.
frequency
- C.
Earth loop impedance Ze
- D.
Power factor
- 15.The requirements for mobile or transportable units are applicable to the following types of unit
- A.
Health screening services
- B.
Pleasure craft
- C.
Mobile machinery to BS EN 60204-1
- D.
Traction equipment of electric vehicles
- 16.Basic protection by means of obstacles is intended to prevent
- A.
Ordinary persons from operating equipment
- B.
Intentional contact with exposed parts
- C.
Intentional bodily approach to a live part
- D.
Unintentional bodily approach to a live part
- 17.Which of the following is a method of fault protection?
- A.
Electrical separation
- B.
Barriers or enclosures
- C.
Insulation of live parts
- D.
Placing out of reach
- 18.The value of the external earth loop impedance Ze can be obtained by measurement at
- A.
The supply point and subtracting the value of internal loop impedance (R1 + R2)
- B.
The furthest socket-outlet from the supply
- C.
The origin of supply
- D.
both the supply and at the furthest socket-outlet, and subtracting one result from the other
- 19.In a TN system, final circuits not exceeding 32A supplying fixed equipment are subject to a maximum disconnection time of
- A.
0.4s
- B.
0.8s
- C.
4.0s
- D.
5.0s
- 20.The temperature limit for metalic equipment which is intended to be touched but not hand-held is
- A.
30 degrees Celsius
- B.
55 degrees Celsius
- C.
65 degrees Celsius
- D.
70 degrees Celsius
- 21.Overload current is defined as an overcurrent
- A.
Due to low insulation resistance
- B.
In a circuit which is electrically sound
- C.
Due to a fault of negligible impedance
- D.
In a line conductor in contact with earth
- 22.The prospective fault current at the origin of a single-phase installation is the greater of the prospective
- A.
Maximum demand and diversity value
- B.
Short circuit and overload current
- C.
Design current and distributor’s main fuse
- D.
Short circuit and earth fault currents
- 23.To meet the requirements of BS 7671, all overcurrent devices without upstream backup protection must
- A.
Be rated lower than the design current
- B.
Meet the requirements of BS 7846
- C.
Be able to withstand the prospective fault current
- D.
Not operate due to a line to earth fault
- 24.Which of the following devices can not be used for emergency switching?
- A.
A push-button controlling an all-pole contactor
- B.
A manually operated switch
- C.
A circuit-breaker
- D.
A luminaire support coupler
- 25.Which of the following arrangements of a firefighter’s switch controlling a discharge lighting installation would comply with BS 7671?
- A.
Switch with off position at the bottom and mounted at 2.75m from the ground
- B.
Switch with off position at the top and mounted at 3.75m from the ground
- C.
Switch with off position at the bottom and mounted at 3.75m from the ground
- D.
Switch with off position at the top and mounted at 2.75m from the ground
Questions: 80 | Attempts: 2926 | Last updated: Sep 19, 2013
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