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Unit 203 Revision Question Bank No.2

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C&G 2365 Level 2 Unit 203 Revision (Bank 2) OB
Oliver Balay
Quiz by Oliver Balay, updated more than 1 year ago
Oliver Balay
Created by Oliver Balay over 9 years ago
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Resource summary

Question 1

Question
If a steel wire armoured cable had an overall diameter of 16mm what would be the maximum spacing of clips on a horizontal run
Image:
b458c60b-2f6b-4c86-aa9a-70b4aa3c4ea0 (image/jpeg)
Answer
  • 250mm
  • 450mm
  • 400mm
  • 0.5m

Question 2

Question
If Band 1 and Band 2 circuits are run through the same trunking what special requirements must you achieve?
Image:
5883ac55-9707-4d5d-a17c-2115548215eb (image/jpeg)
Answer
  • 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

Question 3

Question
If the ambient temperature increases the copper cable will
Image:
1d78f2d9-1fb7-452a-8188-51349f82ea5b (image/png)
Answer
  • Increase resistance
  • Decrease resistance
  • Stay the same
  • Will melt

Question 4

Question
If the distance of an interactive whiteboard is 2m and the measurement taken is 4cm what is the scale of the drawing
Image:
5d233d73-2f59-45a1-83ab-96b54fe841cd (image/jpeg)
Answer
  • 1:20
  • 1:100
  • 1:40
  • 1:50

Question 5

Question
If the distance of a wall is 4m and the measurement taken by the drawing is 4cm what is the scale
Image:
32a98556-46bd-4526-94a1-f57b1590e3d4 (image/jpeg)
Answer
  • 1:75
  • 1:100
  • 1:50
  • 1:20

Question 6

Question
In a switch started fluorescent tube circuit, the function of the choke when the lamp is lit, is to
Answer
  • 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

Question 7

Question
In electrical systems, the definition of isolation is:
Image:
04eecb3f-3241-4b76-9ea6-21154df2dbba (image/jpeg)
Answer
  • 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

Question 8

Question
In order to determine types of materials and quantities required to complete an electrical installation, an estimator will require:
Image:
6d6bea91-b26a-4913-9fa4-51453e0ee332 (image/jpeg)
Answer
  • Operating sheets & manufacturers' models
  • Exploded view diagrams & data sheets
  • A technical drawing & data sheet
  • Specification & wiring diagram

Question 9

Question
For large number of computers installed on a large [LAN] network, what cable would you use?
Image:
0a5023bb-ea73-481d-9bf3-f096de2f6118.gif (image/gif)
Answer
  • Steel wired armour
  • Fibre optics
  • PVC
  • MICC

Question 10

Question
On a construction site the voltage to be used for power tools is restricted to
Image:
9960b596-5357-448b-95ee-5c60342af43b (image/jpeg)
Answer
  • 110V AC
  • 230V AC
  • 110V DC
  • 55V AC

Question 11

Question
On site, where a crane is operating overhead, in addition to a safety helmet an electrician should wear
Image:
85ecf63d-9a96-415c-989d-59a5e960109f (image/jpeg)
Answer
  • Face mask
  • A high visibility jacket
  • Rubber soled shoes
  • A donkey jacket

Question 12

Question
Operating characteristics information supplied with electric motors by the manufacturers is in the form of:
Image:
b29bc570-5feb-4c4e-954b-815aed62cb80 (image/jpeg)
Answer
  • Data sheets
  • Memoranda
  • Circuit diagrams
  • Wiring diagrams

Question 13

Question
Overload can occur in a circuit if
Image:
a0769e7e-5c38-404a-8fc9-cc31303d9a76 (image/jpeg)
Answer
  • 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

Question 14

Question
PVC & metal conduit are fixed using:
Image:
d0dd458a-5d68-40fb-95c3-c689e3594b3c (image/jpeg)
Answer
  • Crampets
  • Spiral fixings
  • Cleats
  • Saddles

Question 15

Question
Solar Thermal installations work on which principle
Image:
27ab2875-34f5-4d86-8602-931e41ad076e (image/png)
Answer
  • 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

Question 16

Question
The British Standard for a cartridge fuse used in 13A plug tops
Image:
b79338fa-2588-4cae-8f2c-734d5977ea69 (image/jpeg)
Answer
  • BS 88
  • BS 1361
  • BS 1362
  • BS 3036

Question 17

Question
The cables that connect between two 2 way switches are said to be called
Image:
15063e69-c170-4108-ab45-baf63c0a3b64 (image/jpeg)
Answer
  • Switch wires
  • Strippers
  • Switch lines
  • Strappers

Question 18

Question
The distribution supply cable to a building is usually:
Image:
a2ad03bd-9f82-4ade-889b-2766e59e9c74 (image/jpeg)
Answer
  • Steel Wire Armoured
  • PVC sheathed & insulated
  • PVC insulated in steel conduit
  • Mineral Insulated

Question 19

Question
The earthing arrangement when incoming supply cable sheath provides an independent earth is
Image:
d476e317-16b5-4113-815c-64f46a70d4ba.JPG (image/jpeg)
Answer
  • TN - C
  • TT
  • TN - S
  • TN - C - S

Question 20

Question
The main reason to fix cable to walls on horizontal runs using appropriate clips at suitable intervals is to prevent:
Image:
6399c3c7-b650-4ef1-86c0-809fef5be938.JPG (image/jpeg)
Answer
  • Untidy appearance
  • Stress on the cable
  • Stop the cable being pulled down
  • Stray magnetic fields

Question 21

Question
The maximum disconnection time for a circuit over 32A is
Image:
2fb3eeae-d81a-4ab5-acf2-e77dbcfbc397 (image/png)
Answer
  • 1 second
  • 0.4 seconds
  • 0.2 seconds
  • 5 seconds

Question 22

Question
The maximum number of accidents on a construction site is due to
Image:
bf062ada-6cab-438d-8b94-d5e8525c306e (image/jpeg)
Answer
  • Falling/tripping/manual handling
  • Falling/manual handling/use of equipment
  • Tripping/manul handling/use of equipment
  • Use of materials/falling/manual handling

Question 23

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

Question 24

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

Question 25

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

Question 26

Question
The purpose of the day work sheet is to record
Answer
  • 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

Question 27

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

Question 28

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

Question 29

Question
The standard transmission high voltage is
Answer
  • 11kV
  • 400V
  • 11kV
  • 400kV

Question 30

Question
The stop button used to allow isolation of electrical equipment for maintenance must:
Image:
eba35fe1-b2ea-4e34-abc3-266e39b22d00 (image/jpeg)
Answer
  • Easy to re-close
  • Placed close to the incoming supply
  • Able to be bypassed
  • Be impossible to re-close unintentionally

Question 31

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

Question 32

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

Question 33

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

Question 34

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

Question 35

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

Question 36

Question
What does the following picture show?
Image:
95a118b7-4767-4889-8fcb-828ec5ebbb98 (image/jpeg)
Answer
  • Spacer Bar Saddle
  • Cable Cleat
  • Hospital Saddle
  • Crampet

Question 37

Question
What fixings would be used on a hollow partition wall?
Image:
3d17398b-fb5e-4815-9eb7-92a834509469 (image/jpeg)
Answer
  • Rawl plug
  • Spring toggle
  • Screw
  • Cable cleat

Question 38

Question
What fixings would be used on a brick wall?
Image:
662fde7e-aa4f-4cf8-b61e-3d7cb2b4c637 (image/jpeg)
Answer
  • Rawl plug and round headed wood screw
  • Spring toggle
  • Self-adhesive tape
  • Gravity toggle

Question 39

Question
What form of switching is used on a security system?
Image:
e28431da-c361-4787-8540-a8c7640d9033.gif (image/gif)
Answer
  • Relay
  • Contactor
  • Direct on line starter
  • One way switch

Question 40

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