2833100
Descrição
Quiz por Oliver Balay, atualizado more than 1 year ago
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Criado por Oliver Balay
mais de 9 anos atrás
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Questão 1
Questão
Which one of the following directly affects all persons working with electricity in a working environment?
Responda
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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
Questão 2
Questão
Which one of the following are non-statutory regulations?
Responda
-
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
Questão 3
Questão
Which one of the following is a direct implication of not complying with statutory regulations?
Responda
-
Loss of earnings
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Lost clients
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Dismissal
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Prosecution
Questão 4
Questão
The document showing the location of electrical equipment in an electrical installation is a:
Responda
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specification
-
drawing
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variation order
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Gantt chart
Questão 5
Questão
Which one of the following diagram types does not show individual conductors or cables but shows the sequence of equipment?
Responda
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Block
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Circuit
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Schematic
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Bar chart
Questão 6
Responda
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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
Questão 7
Questão
Which one of the following is the correct drawing scale where a wall, 4m in length, measures 8cm on a drawing?
Responda
-
1:50
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1:100
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1:200
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1:500
Questão 8
Questão
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?
Responda
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0.875m
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1.75m
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3.5m
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7m
Questão 9
Questão
A circuit installed to supply a fire panel would be identified as:
Responda
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power and heating
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data communication
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control circuit
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alarm and emergency system
Questão 10
Questão
The type of trunking that can be used as a circuit protective conductor is:
Responda
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mini
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PVC dado
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steel
-
plastic
Questão 11
Questão
The insulation material of mineral insulated metal sheathed cables is absorbent; therefore the terminations must be:
Responda
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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
Questão 12
Questão
Additional cable supports should be provided in trunking where:
Responda
-
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
Questão 13
Questão
Band I and Band II circuits can be enclosed in the same enclosure, provided that:
Responda
-
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
Questão 14
Questão
Which one of the following is the type of conduit fixing shown?
Responda
-
Cleat
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Clip
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Crampet
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Saddle
Questão 15
Questão
Which one of the following symbols represents the rating factor for thermal insulation?
Responda
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Ci
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Ca
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Cf
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Cg
Questão 16
Questão
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?
Responda
-
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
Questão 17
Questão
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?
Responda
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31A
-
32A
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36A
-
41A
Questão 18
Questão
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?
Responda
-
29 mV/A/m
-
18 mV/A/m
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11 mV/A/m
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7.3 mV/A/m
Questão 19
Questão
Which one of the following devices is suitable for an installation supplying an X-ray machine in a hospital?
Responda
-
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
Questão 20
Questão
Which one of the following devices will disconnect in the fastest time if a short circuit current of approximately 400A occurred on a circuit?
Responda
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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
Questão 21
Questão
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?
Responda
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16mm
-
20mm
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25mm
-
32mm
Questão 22
Questão
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?
Responda
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16mm
-
20mm
-
25mm
-
32mm
Questão 23
Questão
Which one of the following is the conduit capacity factor to be used where a 25mm conduit has 2 bend in a 6m run?
Responda
-
111
-
182
-
333
-
600
Questão 24
Questão
The electrical system in which the connection to earth is by an earth electrode is:
Responda
-
TT
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TN-S
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TN-C
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TN-C-S
Questão 25
Questão
Which one of the following earthing arrangements is shown in the diagram?
Responda
-
TN-C-S
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TT
-
TN-C
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TN-S
Questão 26
Questão
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?
Responda
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Main protective bonding conductor
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Supplementary equipotential bond
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Earthing conductor
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Functional earth
Questão 27
Questão
What is represented by Zs in the following formula:
Zs = Ze + (R1 + R2)?
Responda
-
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
Questão 28
Questão
Which one of the following defines the term ‘main protective bonding conductor’?
Responda
-
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
Questão 29
Questão
Which one of the following is the purpose of the main protective bonding conductor?
Responda
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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
-
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
Questão 30
Questão
Which one of the following is an exposed conductive part?
Responda
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Metal-clad switch
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Structural steelwork
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Air conditioning ducting
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Metallic oil service pipe
Questão 31
Questão
Which one of the following is metal cable trunking?
Responda
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Earthed conductive part
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Extraneous conductive part
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Insulated part
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Exposed conductive part
Questão 32
Questão
Which one of the following is an extraneous conductive part?
Responda
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Metallic gas service pipe
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Metal-clad twin socket outlet
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Heavy duty steel conduit
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PVC mini-trunking
Questão 33
Questão
Which one of the following methods of generating electricity uses fossil fuels?
Responda
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Wave power
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Solar
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Gas
-
Wind
Questão 34
Questão
Which one of the following uses sunlight to generate electricity?
Responda
-
Photo-voltaic
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Biomass
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Wind
-
Air source heat pump
Questão 35
Questão
Which one of the following is a transmission voltage?
Responda
-
400kV
-
33kV
-
11kV
-
400V
Questão 36
Questão
Which one of the following is a typical distribution voltage for a medium-sized factory where a private sub station is located?
Responda
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230V
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400V
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5kV
-
11kV
Questão 37
Questão
In which of the following parts of the electrical distribution network would a step-down transformer be located?
Responda
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Power station
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Pylon
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Local distribution sub station
-
Inverter
Questão 38
Questão
Which one of the following describes the process of a solar photo voltaic system?
Responda
-
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
-
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
Questão 39
Questão
Which one of the following is a suitable use for rainwater harvesting?
Responda
-
Baths/showers
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Toilet flushing
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Drinking water
-
Cooking water
Questão 40
Questão
Which one of the following micro-generation systems requires the least maintenance once installed?
Responda
-
Micro-combined heat and power
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Air source heat pump
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Biomass
-
Solar thermal
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