Pregunta 1
Pregunta
Which one of the following directly affects all persons working with electricity in a working environment?
Respuesta
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Electricity Safety, Quality and Continuity Regulations
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BS 7671
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Electricity at Work Regulations
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Construction design and management Regulations
Pregunta 2
Pregunta
Which one of the following are non-statutory regulations?
Respuesta
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Electricity at Work Regulation
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Manual Handling Regulation
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BS 7671
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Provision and Use of Work Equipment Regulations
Pregunta 3
Pregunta
Which one of the following is a direct implication of not complying with statutory regulations?
Respuesta
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Loss of earnings
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Lost clients
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Dismissal
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Prosecution
Pregunta 4
Pregunta
The document showing the location of electrical equipment in an electrical installation is a:
Respuesta
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specification
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drawing
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variation order
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Gantt chart
Pregunta 5
Pregunta
Which one of the following diagram types does not show individual conductors or cables but shows the sequence of equipment?
Respuesta
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Block
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Circuit
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Schematic
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Bar chart
Pregunta 6
Pregunta
The symbol shown represents:
Respuesta
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one-way switch
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two-way switch
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intermediate switch
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pull switch
Pregunta 7
Pregunta
Which one of the following is the correct drawing scale where a wall, 4m in length, measures 8cm on a drawing?
Pregunta 8
Pregunta
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?
Pregunta 9
Pregunta
A circuit installed to supply a fire panel would be identified as:
Pregunta 10
Pregunta
The type of trunking that can be used as a circuit protective conductor is:
Respuesta
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mini
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PVC dado
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steel
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plastic
Pregunta 11
Pregunta
The insulation material of mineral insulated metal sheathed cables is absorbent; therefore the terminations must be:
Respuesta
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watertight
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correctly identified
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fitted with a gland
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fitted with a shroud
Pregunta 12
Pregunta
Additional cable supports should be provided in trunking where:
Respuesta
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segregation is required
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there are long vertical runs
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trunking is made of plastic
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the walls are made of lightweight block
Pregunta 13
Pregunta
Band I and Band II circuits can be enclosed in the same enclosure, provided that:
Respuesta
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the current rating of all circuits does not exceed 10A
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they are twisted around each other along the trunking length
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every cable or conductor is insulated for the highest voltage present
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there are the same number of Band I and Band II circuits
Pregunta 14
Pregunta
Which one of the following is the type of conduit fixing shown?
Respuesta
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Cleat
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Clip
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Crampet
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Saddle
Pregunta 15
Pregunta
Which one of the following symbols represents the rating factor for thermal insulation?
Pregunta 16
Pregunta
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?
Respuesta
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44 mV/A/m
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11 mV/A/m
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4.4 mV/A/m
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2.8 mV/A/m
Pregunta 17
Pregunta
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?
Pregunta 18
Pregunta
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?
Respuesta
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29 mV/A/m
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18 mV/A/m
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11 mV/A/m
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7.3 mV/A/m
Pregunta 19
Pregunta
Which one of the following devices is suitable for an installation supplying an X-ray machine in a hospital?
Respuesta
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BS 3036 rewireable fuse
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BS EN 60898 Type D
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BS EN 60898 Type C
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BS EN 60898 Type B
Pregunta 20
Pregunta
Which one of the following devices will disconnect in the fastest time if a short circuit current of approximately 400A occurred on a circuit?
Respuesta
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32A/30mA Type C RCBO
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32A Type B circuit breaker
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32A Type C circuit breaker
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32A Type D circuit breaker
Pregunta 21
Pregunta
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?
Pregunta 22
Pregunta
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?
Pregunta 23
Pregunta
Which one of the following is the conduit capacity factor to be used where a 25mm conduit has 2 bend in a 6m run?
Pregunta 24
Pregunta
The electrical system in which the connection to earth is by an earth electrode is:
Pregunta 25
Pregunta
Which one of the following earthing arrangements is shown in the diagram?
Pregunta 26
Pregunta
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?
Pregunta 27
Pregunta
What is represented by Zs in the following formula:
Zs = Ze + (R1 + R2)?
Respuesta
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Total earth fault loop impedance
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External earth fault loop impedance
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Final circuit earth fault loop impedance
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Combined resistance of the earth path
Pregunta 28
Pregunta
Which one of the following defines the term ‘main protective bonding conductor’?
Respuesta
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The conductor which links the MET to an earth electrode
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The conductor which links the MET to extraneous conductive parts
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The conductor which links the MET to exposed conductive parts
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The conductor which links the MET to the means of earthing
Pregunta 29
Pregunta
Which one of the following is the purpose of the main protective bonding conductor?
Respuesta
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To raise extraneous conductive parts to the same voltage as the supply under overload
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To raise extraneous conductive parts to the same voltage as the supply under earth fault conditions
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To raise extraneous conductive parts to the same voltage as the supply under normal conditions
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To raise extraneous conductive parts to the same voltage as the supply under transient fault conditions
Pregunta 30
Pregunta
Which one of the following is an exposed conductive part?
Pregunta 31
Pregunta
Which one of the following is metal cable trunking?
Pregunta 32
Pregunta
Which one of the following is an extraneous conductive part?
Pregunta 33
Pregunta
Which one of the following methods of generating electricity uses fossil fuels?
Respuesta
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Wave power
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Solar
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Gas
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Wind
Pregunta 34
Pregunta
Which one of the following uses sunlight to generate electricity?
Respuesta
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Photo-voltaic
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Biomass
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Wind
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Air source heat pump
Pregunta 35
Pregunta
Which one of the following is a transmission voltage?
Pregunta 36
Pregunta
Which one of the following is a typical distribution voltage for a medium-sized factory where a private sub station is located?
Pregunta 37
Pregunta
In which of the following parts of the electrical distribution network would a step-down transformer be located?
Pregunta 38
Pregunta
Which one of the following describes the process of a solar photo voltaic system?
Respuesta
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Solar power is used to ignite a biomass which heats up water
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Solar power is collected by a solar panel which provides electricity
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Solar power is collected by a solar panel which provides hot water
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Solar power causes hot air to rise, rotating a generator that produces electricity
Pregunta 39
Pregunta
Which one of the following is a suitable use for rainwater harvesting?
Respuesta
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Baths/showers
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Toilet flushing
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Drinking water
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Cooking water
Pregunta 40
Pregunta
Which one of the following micro-generation systems requires the least maintenance once installed?