Unit 203 Mock Installation Technology Questions

Resumo de Recurso

Questão 1

Questão
Which one of the following directly affects all persons working with electricity in a working environment?
Responda
  • Electricity Safety, Quality and Continuity Regulations
  • BS 7671
  • Electricity at Work Regulations
  • Construction design and management Regulations

Questão 2

Questão
Which one of the following are non-statutory regulations?
Responda
  • Electricity at Work Regulation
  • Manual Handling Regulation
  • BS 7671
  • 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
  • Lost clients
  • Dismissal
  • Prosecution

Questão 4

Questão
The document showing the location of electrical equipment in an electrical installation is a:
Responda
  • specification
  • drawing
  • variation order
  • 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
  • Block
  • Circuit
  • Schematic
  • Bar chart

Questão 6

Questão
The symbol shown represents:
Responda
  • one-way switch
  • two-way switch
  • intermediate switch
  • 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
  • 1:100
  • 1:200
  • 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
  • 0.875m
  • 1.75m
  • 3.5m
  • 7m

Questão 9

Questão
A circuit installed to supply a fire panel would be identified as:
Responda
  • power and heating
  • data communication
  • control circuit
  • alarm and emergency system

Questão 10

Questão
The type of trunking that can be used as a circuit protective conductor is:
Responda
  • mini
  • PVC dado
  • steel
  • plastic

Questão 11

Questão
The insulation material of mineral insulated metal sheathed cables is absorbent; therefore the terminations must be:
Responda
  • watertight
  • correctly identified
  • fitted with a gland
  • fitted with a shroud

Questão 12

Questão
Additional cable supports should be provided in trunking where:
Responda
  • segregation is required
  • there are long vertical runs
  • trunking is made of plastic
  • 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
  • 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

Questão 14

Questão
Which one of the following is the type of conduit fixing shown?
Responda
  • Cleat
  • Clip
  • Crampet
  • Saddle

Questão 15

Questão
Which one of the following symbols represents the rating factor for thermal insulation?
Responda
  • Ci
  • Ca
  • Cf
  • 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
  • 11 mV/A/m
  • 4.4 mV/A/m
  • 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
  • 31A
  • 32A
  • 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
  • 11 mV/A/m
  • 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
  • BS EN 60898 Type D
  • BS EN 60898 Type C
  • 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
  • 32A/30mA Type C RCBO
  • 32A Type B circuit breaker
  • 32A Type C circuit breaker
  • 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
  • 16mm
  • 20mm
  • 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
  • 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
  • TN-S
  • TN-C
  • TN-C-S

Questão 25

Questão
Which one of the following earthing arrangements is shown in the diagram?
Responda
  • TN-C-S
  • TT
  • TN-C
  • 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
  • Main protective bonding conductor
  • Supplementary equipotential bond
  • Earthing conductor
  • Functional earth

Questão 27

Questão
What is represented by Zs in the following formula: Zs = Ze + (R1 + R2)?
Responda
  • Total earth fault loop impedance
  • External earth fault loop impedance
  • Final circuit earth fault loop impedance
  • 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
  • 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

Questão 29

Questão
Which one of the following is the purpose of the main protective bonding conductor?
Responda
  • 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

Questão 30

Questão
Which one of the following is an exposed conductive part?
Responda
  • Metal-clad switch
  • Structural steelwork
  • Air conditioning ducting
  • Metallic oil service pipe

Questão 31

Questão
Which one of the following is metal cable trunking?
Responda
  • Earthed conductive part
  • Extraneous conductive part
  • Insulated part
  • Exposed conductive part

Questão 32

Questão
Which one of the following is an extraneous conductive part?
Responda
  • Metallic gas service pipe
  • Metal-clad twin socket outlet
  • Heavy duty steel conduit
  • PVC mini-trunking

Questão 33

Questão
Which one of the following methods of generating electricity uses fossil fuels?
Responda
  • Wave power
  • Solar
  • Gas
  • Wind

Questão 34

Questão
Which one of the following uses sunlight to generate electricity?
Responda
  • Photo-voltaic
  • Biomass
  • 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
  • 230V
  • 400V
  • 5kV
  • 11kV

Questão 37

Questão
In which of the following parts of the electrical distribution network would a step-down transformer be located?
Responda
  • Power station
  • Pylon
  • 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
  • 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

Questão 39

Questão
Which one of the following is a suitable use for rainwater harvesting?
Responda
  • Baths/showers
  • Toilet flushing
  • 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
  • Air source heat pump
  • Biomass
  • Solar thermal

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