Which one of the following directly affects all persons working with electricity in a working environment?
Electricity Safety, Quality and Continuity Regulations
BS 7671
Electricity at Work Regulations
Construction design and management Regulations
Which one of the following are non-statutory regulations?
Electricity at Work Regulation
Manual Handling Regulation
Provision and Use of Work Equipment Regulations
Which one of the following is a direct implication of not complying with statutory regulations?
Loss of earnings
Lost clients
Dismissal
Prosecution
The document showing the location of electrical equipment in an electrical installation is a:
specification
drawing
variation order
Gantt chart
Which one of the following diagram types does not show individual conductors or cables but shows the sequence of equipment?
Block
Circuit
Schematic
Bar chart
The symbol shown represents:
one-way switch
two-way switch
intermediate switch
pull switch
Which one of the following is the correct drawing scale where a wall, 4m in length, measures 8cm on a drawing?
1:50
1:100
1:200
1:500
A drawing is produced to a scale of 1:50 showing a socket outlet installed 3.5cm from the corner of a room. Which one of the following is the actual distance from the corner in the room?
0.875m
1.75m
3.5m
7m
A circuit installed to supply a fire panel would be identified as:
power and heating
data communication
control circuit
alarm and emergency system
The type of trunking that can be used as a circuit protective conductor is:
mini
PVC dado
steel
plastic
The insulation material of mineral insulated metal sheathed cables is absorbent; therefore the terminations must be:
watertight
correctly identified
fitted with a gland
fitted with a shroud
Additional cable supports should be provided in trunking where:
segregation is required
there are long vertical runs
trunking is made of plastic
the walls are made of lightweight block
Band I and Band II circuits can be enclosed in the same enclosure, provided that:
the current rating of all circuits does not exceed 10A
they are twisted around each other along the trunking length
every cable or conductor is insulated for the highest voltage present
there are the same number of Band I and Band II circuits
Which one of the following is the type of conduit fixing shown?
Cleat
Clip
Crampet
Saddle
Which one of the following symbols represents the rating factor for thermal insulation?
Ci
Ca
Cf
Cg
Which one of the following is the value of voltage drop, per ampere, per metre, for a 10mm2 multi-core flat thermoplastic 70°C cable, intended to supply a single phase circuit?
44 mV/A/m
11 mV/A/m
4.4 mV/A/m
2.8 mV/A/m
Which one of the following is the maximum current carrying capacity for a single core 6mm2 70°C thermoplastic insulated non armoured cable, enclosed in conduit on a wall installed for a single phase circuit?
31A
32A
36A
41A
Which one of the following is the value of voltage drop, in millivolts per ampere per metre, for a 4mm2 multi core thermosetting non armoured cable, intended to supply a single phase circuit?
29 mV/A/m
18 mV/A/m
7.3 mV/A/m
Which one of the following devices is suitable for an installation supplying an X-ray machine in a hospital?
BS 3036 rewireable fuse
BS EN 60898 Type D
BS EN 60898 Type C
BS EN 60898 Type B
Which one of the following devices will disconnect in the fastest time if a short circuit current of approximately 400A occurred on a circuit?
32A/30mA Type C RCBO
32A Type B circuit breaker
32A Type C circuit breaker
32A Type D circuit breaker
Which one of the following is the minimum conduit size suitable for a short straight run containing the following stranded cables: • 4 x 1.5mm2 • 3 x 2.5mm2?
16mm
20mm
25mm
32mm
Which one of the following is the minimum conduit size suitable for a short straight run containing the following stranded cables: • 8 x 1.5mm2 • 2 x 2.5mm2 • 2 x 4.0mm2?
Which one of the following is the conduit capacity factor to be used where a 25mm conduit has 2 bend in a 6m run?
111
182
333
600
The electrical system in which the connection to earth is by an earth electrode is:
TT
TN-S
TN-C
TN-C-S
Which one of the following earthing arrangements is shown in the diagram?
Which one of the following is the correct name of the component which links the main earthing terminal of an installation to the means of earthing?
Main protective bonding conductor
Supplementary equipotential bond
Earthing conductor
Functional earth
What is represented by Zs in the following formula: Zs = Ze + (R1 + R2)?
Total earth fault loop impedance
External earth fault loop impedance
Final circuit earth fault loop impedance
Combined resistance of the earth path
Which one of the following defines the term ‘main protective bonding conductor’?
The conductor which links the MET to an earth electrode
The conductor which links the MET to extraneous conductive parts
The conductor which links the MET to exposed conductive parts
The conductor which links the MET to the means of earthing
Which one of the following is the purpose of the main protective bonding conductor?
To raise extraneous conductive parts to the same voltage as the supply under overload
To raise extraneous conductive parts to the same voltage as the supply under earth fault conditions
To raise extraneous conductive parts to the same voltage as the supply under normal conditions
To raise extraneous conductive parts to the same voltage as the supply under transient fault conditions
Which one of the following is an exposed conductive part?
Metal-clad switch
Structural steelwork
Air conditioning ducting
Metallic oil service pipe
Which one of the following is metal cable trunking?
Earthed conductive part
Extraneous conductive part
Insulated part
Exposed conductive part
Which one of the following is an extraneous conductive part?
Metallic gas service pipe
Metal-clad twin socket outlet
Heavy duty steel conduit
PVC mini-trunking
Which one of the following methods of generating electricity uses fossil fuels?
Wave power
Solar
Gas
Wind
Which one of the following uses sunlight to generate electricity?
Photo-voltaic
Biomass
Air source heat pump
Which one of the following is a transmission voltage?
400kV
33kV
11kV
400V
Which one of the following is a typical distribution voltage for a medium-sized factory where a private sub station is located?
230V
5kV
In which of the following parts of the electrical distribution network would a step-down transformer be located?
Power station
Pylon
Local distribution sub station
Inverter
Which one of the following describes the process of a solar photo voltaic system?
Solar power is used to ignite a biomass which heats up water
Solar power is collected by a solar panel which provides electricity
Solar power is collected by a solar panel which provides hot water
Solar power causes hot air to rise, rotating a generator that produces electricity
Which one of the following is a suitable use for rainwater harvesting?
Baths/showers
Toilet flushing
Drinking water
Cooking water
Which one of the following micro-generation systems requires the least maintenance once installed?
Micro-combined heat and power
Solar thermal
Please wait - loading…