Unit 203 Revision Question Bank No.2

Descrição

C&G 2365 Level 2 Unit 203 Revision (Bank 2) OB
Oliver Balay
Quiz por Oliver Balay, atualizado more than 1 year ago
Oliver Balay
Criado por Oliver Balay mais de 9 anos atrás
9780
7

Resumo de Recurso

Questão 1

Questão
If a steel wire armoured cable had an overall diameter of 16mm what would be the maximum spacing of clips on a horizontal run
Responda
  • 250mm
  • 450mm
  • 400mm
  • 0.5m

Questão 2

Questão
If Band 1 and Band 2 circuits are run through the same trunking what special requirements must you achieve?
Responda
  • Cables to be run in the opposite direction
  • Cables are installed in separate compartments
  • Are not permitted in Trunking
  • Must be able to carry the same colour Live and Neutral conductors

Questão 3

Questão
If the ambient temperature increases the copper cable will
Responda
  • Increase resistance
  • Decrease resistance
  • Stay the same
  • Will melt

Questão 4

Questão
If the distance of an interactive whiteboard is 2m and the measurement taken is 4cm what is the scale of the drawing
Responda
  • 1:20
  • 1:100
  • 1:40
  • 1:50

Questão 5

Questão
If the distance of a wall is 4m and the measurement taken by the drawing is 4cm what is the scale
Responda
  • 1:75
  • 1:100
  • 1:50
  • 1:20

Questão 6

Questão
In a switch started fluorescent tube circuit, the function of the choke when the lamp is lit, is to
Responda
  • Limit current flowing in the lamp
  • Produce a voltage surge across the lamp
  • Cause current in the circuit to leap voltage.
  • Increase current flow in the circuit

Questão 7

Questão
In electrical systems, the definition of isolation is:
Responda
  • Placing conductors from each circuit in separate conduit
  • Protecting each circuit by a separate circuit breaker
  • Cutting off electrical energy from every power source
  • Isolating circuits & equipment from the general mass of earth

Questão 8

Questão
In order to determine types of materials and quantities required to complete an electrical installation, an estimator will require:
Responda
  • Operating sheets & manufacturers' models
  • Exploded view diagrams & data sheets
  • A technical drawing & data sheet
  • Specification & wiring diagram

Questão 9

Questão
For large number of computers installed on a large [LAN] network, what cable would you use?
Responda
  • Steel wired armour
  • Fibre optics
  • PVC
  • MICC

Questão 10

Questão
On a construction site the voltage to be used for power tools is restricted to
Responda
  • 110V AC
  • 230V AC
  • 110V DC
  • 55V AC

Questão 11

Questão
On site, where a crane is operating overhead, in addition to a safety helmet an electrician should wear
Responda
  • Face mask
  • A high visibility jacket
  • Rubber soled shoes
  • A donkey jacket

Questão 12

Questão
Operating characteristics information supplied with electric motors by the manufacturers is in the form of:
Responda
  • Data sheets
  • Memoranda
  • Circuit diagrams
  • Wiring diagrams

Questão 13

Questão
Overload can occur in a circuit if
Responda
  • A short circuit is present between line and neutral
  • The circuit is electrically sound
  • Between two conductors at different potentials
  • If there is a loose connection of conductors

Questão 14

Questão
PVC & metal conduit are fixed using:
Responda
  • Crampets
  • Spiral fixings
  • Cleats
  • Saddles

Questão 15

Questão
Solar Thermal installations work on which principle
Responda
  • Water passes through the panel allowing the generator to rotate.
  • Wind hits the panels and creates an electro motive force through the semiconductor material
  • Sun hits the panels and warms up the water.
  • Sun hits the panels and turn into electricity

Questão 16

Questão
The British Standard for a cartridge fuse used in 13A plug tops
Responda
  • BS 88
  • BS 1361
  • BS 1362
  • BS 3036

Questão 17

Questão
The cables that connect between two 2 way switches are said to be called
Responda
  • Switch wires
  • Strippers
  • Switch lines
  • Strappers

Questão 18

Questão
The distribution supply cable to a building is usually:
Responda
  • Steel Wire Armoured
  • PVC sheathed & insulated
  • PVC insulated in steel conduit
  • Mineral Insulated

Questão 19

Questão
The earthing arrangement when incoming supply cable sheath provides an independent earth is
Responda
  • TN - C
  • TT
  • TN - S
  • TN - C - S

Questão 20

Questão
The main reason to fix cable to walls on horizontal runs using appropriate clips at suitable intervals is to prevent:
Responda
  • Untidy appearance
  • Stress on the cable
  • Stop the cable being pulled down
  • Stray magnetic fields

Questão 21

Questão
The maximum disconnection time for a circuit over 32A is
Responda
  • 1 second
  • 0.4 seconds
  • 0.2 seconds
  • 5 seconds

Questão 22

Questão
The maximum number of accidents on a construction site is due to
Responda
  • Falling/tripping/manual handling
  • Falling/manual handling/use of equipment
  • Tripping/manul handling/use of equipment
  • Use of materials/falling/manual handling

Questão 23

Questão
The maximum span between buildings for unjointed 25mm diameter steel conduit is
Responda
  • 2m
  • 3m
  • 2.5m
  • 1.5 m

Questão 24

Questão
The most accurate method of forming right angle bends in steel conduit is:
Responda
  • A vice and heat source
  • A wooden block
  • The knee
  • A bending machine

Questão 25

Questão
The most important factor when selecting a cable of known rating is:
Responda
  • Colour of insulation
  • The temperature of operation
  • Shape of the outer sheath
  • Distance between cable cores

Questão 26

Questão
The purpose of the day work sheet is to record
Responda
  • All worked hours
  • Hours worked in addition to the main contract
  • All work to be carried out in one day
  • Any work related expenses to be claimed from petty cash

Questão 27

Questão
The purpose of the pvc sheath on a pvc/pvc multicore cable is to
Responda
  • Prevent damage to insulation
  • Provide a CPC
  • Provide a fixing point for plug cord grips
  • Colour code the cable

Questão 28

Questão
The rating of an RCD installed to provide additional protection for equipment used outside the main equipotential zone is?
Responda
  • 30mA
  • 500mA
  • 100mA
  • 50mA

Questão 29

Questão
The standard transmission high voltage is
Responda
  • 11kV
  • 400V
  • 11kV
  • 400kV

Questão 30

Questão
The stop button used to allow isolation of electrical equipment for maintenance must:
Responda
  • Easy to re-close
  • Placed close to the incoming supply
  • Able to be bypassed
  • Be impossible to re-close unintentionally

Questão 31

Questão
The symbol Ca is used to represent which rating factor
Responda
  • Thermal Insulation
  • Installation Condition
  • Ambient temperature
  • Grouping

Questão 32

Questão
To mark out metal trunking for cutting, you would use:
Responda
  • Rule, square & scriber
  • Gauge, level & tape
  • Knife, hammer & screwdriver
  • Vee block, saw & chisel

Questão 33

Questão
Vertical & horizontal runs of trunking must be adequately supported to:
Responda
  • Provide earth continuity
  • Avoid stress & damage to the cable
  • Prevent possible fire damage
  • Prevent distortion to the trunking

Questão 34

Questão
Which cable type is most suitable for cable cleats?
Responda
  • Singles
  • Steel wire armoured
  • MICC
  • PVC/PVC/CPC

Questão 35

Questão
What conductor is used to connect to extraneous conductive parts?
Responda
  • Main Protective Bonding conductor
  • Main Earthing conductor
  • Circuit Protective conductor
  • Earth Sleeving

Questão 36

Questão
What does the following picture show?
Responda
  • Spacer Bar Saddle
  • Cable Cleat
  • Hospital Saddle
  • Crampet

Questão 37

Questão
What fixings would be used on a hollow partition wall?
Responda
  • Rawl plug
  • Spring toggle
  • Screw
  • Cable cleat

Questão 38

Questão
What fixings would be used on a brick wall?
Responda
  • Rawl plug and round headed wood screw
  • Spring toggle
  • Self-adhesive tape
  • Gravity toggle

Questão 39

Questão
What form of switching is used on a security system?
Responda
  • Relay
  • Contactor
  • Direct on line starter
  • One way switch

Questão 40

Questão
What is the conduit factor for a 4m 20mm conduit which incorporates two bends?
Responda
  • 222
  • 204
  • 91
  • 213

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