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Unit 203 Mock Installation Technology Questions

Resource summary

Question 1

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

Question 2

Question
Which one of the following are non-statutory regulations?
Answer
  • Electricity at Work Regulation
  • Manual Handling Regulation
  • BS 7671
  • Provision and Use of Work Equipment Regulations

Question 3

Question
Which one of the following is a direct implication of not complying with statutory regulations?
Answer
  • Loss of earnings
  • Lost clients
  • Dismissal
  • Prosecution

Question 4

Question
The document showing the location of electrical equipment in an electrical installation is a:
Answer
  • specification
  • drawing
  • variation order
  • Gantt chart

Question 5

Question
Which one of the following diagram types does not show individual conductors or cables but shows the sequence of equipment?
Answer
  • Block
  • Circuit
  • Schematic
  • Bar chart

Question 6

Question
The symbol shown represents:
Answer
  • one-way switch
  • two-way switch
  • intermediate switch
  • pull switch

Question 7

Question
Which one of the following is the correct drawing scale where a wall, 4m in length, measures 8cm on a drawing?
Answer
  • 1:50
  • 1:100
  • 1:200
  • 1:500

Question 8

Question
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?
Answer
  • 0.875m
  • 1.75m
  • 3.5m
  • 7m

Question 9

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

Question 10

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

Question 11

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

Question 12

Question
Additional cable supports should be provided in trunking where:
Answer
  • segregation is required
  • there are long vertical runs
  • trunking is made of plastic
  • the walls are made of lightweight block

Question 13

Question
Band I and Band II circuits can be enclosed in the same enclosure, provided that:
Answer
  • 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

Question 14

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

Question 15

Question
Which one of the following symbols represents the rating factor for thermal insulation?
Answer
  • Ci
  • Ca
  • Cf
  • Cg

Question 16

Question
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?
Answer
  • 44 mV/A/m
  • 11 mV/A/m
  • 4.4 mV/A/m
  • 2.8 mV/A/m

Question 17

Question
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?
Answer
  • 31A
  • 32A
  • 36A
  • 41A

Question 18

Question
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?
Answer
  • 29 mV/A/m
  • 18 mV/A/m
  • 11 mV/A/m
  • 7.3 mV/A/m

Question 19

Question
Which one of the following devices is suitable for an installation supplying an X-ray machine in a hospital?
Answer
  • BS 3036 rewireable fuse
  • BS EN 60898 Type D
  • BS EN 60898 Type C
  • BS EN 60898 Type B

Question 20

Question
Which one of the following devices will disconnect in the fastest time if a short circuit current of approximately 400A occurred on a circuit?
Answer
  • 32A/30mA Type C RCBO
  • 32A Type B circuit breaker
  • 32A Type C circuit breaker
  • 32A Type D circuit breaker

Question 21

Question
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?
Answer
  • 16mm
  • 20mm
  • 25mm
  • 32mm

Question 22

Question
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?
Answer
  • 16mm
  • 20mm
  • 25mm
  • 32mm

Question 23

Question
Which one of the following is the conduit capacity factor to be used where a 25mm conduit has 2 bend in a 6m run?
Answer
  • 111
  • 182
  • 333
  • 600

Question 24

Question
The electrical system in which the connection to earth is by an earth electrode is:
Answer
  • TT
  • TN-S
  • TN-C
  • TN-C-S

Question 25

Question
Which one of the following earthing arrangements is shown in the diagram?
Answer
  • TN-C-S
  • TT
  • TN-C
  • TN-S

Question 26

Question
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?
Answer
  • Main protective bonding conductor
  • Supplementary equipotential bond
  • Earthing conductor
  • Functional earth

Question 27

Question
What is represented by Zs in the following formula: Zs = Ze + (R1 + R2)?
Answer
  • Total earth fault loop impedance
  • External earth fault loop impedance
  • Final circuit earth fault loop impedance
  • Combined resistance of the earth path

Question 28

Question
Which one of the following defines the term ‘main protective bonding conductor’?
Answer
  • 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

Question 29

Question
Which one of the following is the purpose of the main protective bonding conductor?
Answer
  • 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

Question 30

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

Question 31

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

Question 32

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

Question 33

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

Question 34

Question
Which one of the following uses sunlight to generate electricity?
Answer
  • Photo-voltaic
  • Biomass
  • Wind
  • Air source heat pump

Question 35

Question
Which one of the following is a transmission voltage?
Answer
  • 400kV
  • 33kV
  • 11kV
  • 400V

Question 36

Question
Which one of the following is a typical distribution voltage for a medium-sized factory where a private sub station is located?
Answer
  • 230V
  • 400V
  • 5kV
  • 11kV

Question 37

Question
In which of the following parts of the electrical distribution network would a step-down transformer be located?
Answer
  • Power station
  • Pylon
  • Local distribution sub station
  • Inverter

Question 38

Question
Which one of the following describes the process of a solar photo voltaic system?
Answer
  • 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

Question 39

Question
Which one of the following is a suitable use for rainwater harvesting?
Answer
  • Baths/showers
  • Toilet flushing
  • Drinking water
  • Cooking water

Question 40

Question
Which one of the following micro-generation systems requires the least maintenance once installed?
Answer
  • Micro-combined heat and power
  • Air source heat pump
  • Biomass
  • Solar thermal
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