WorksheetsUnit 4 Mock Test
Total questions: 62
Worksheet time: 32mins
Single twisted pair cable has how many wires?
4
6
8
10
What is the best definition of hazard ?
Likelihood of harm in defined circumstances
Potential to cause harm
A person who is skilled in magic or who has magical powers
It is used to generally refer to risky situations whether big or small.
Which step is not part of a Risk Assessment?
Identify the hazards
Evaluate the risks and decide on control measures
Examine the cause of accident
Record findings and implement actions
Define risk assessment
The process used to provide individuals within the entity with an understanding of the roles and responsibilities in relation to internal control over financial reporting.
The process an entity uses to assess the quality of its internal control over time.
Conditions and circumstances existing within an entity that demonstrate the attitude management has about controls, as well as other indicators of management's integrity and motivation.
The process of setting objectives; prioritizing and linking objectives; and identifying, analyzing, and managing risks that are relevant to achieving the objectives.
Which of the following would be used for televisions or CCTV?
Coaxial
Cat 5/6
SWA
Twin & Earth
Thermoplastic cable has insulation suitable for a conductor temperature of
70 Degrees Celsius
90 Degrees Celsius
120 Degrees Celsius
160 Degrees Celsius
The insulation material in mineral insulated cable is
manganese oxide
magnesium dioxide
manganese dioxide
magnesium oxide
1. Which one of the following devices would be BEST suited to fixing 20 mm pvc conduit saddles to a concrete wall?
Wood screw and plastic wall plug
Wood screw and expanding pvc nut
Masonry bolt
Spring toggle
1. When installing conduit along a wall a distance saddle would be used why:
To reduce the effects of vibration
To account for condensation
To reduce temperature effects
To account for low temperatures
What rating fuse do you use in a standard UK plug?
13A
5A
32A
16A
What is the usual size cable you would use to wire a lighting radial circuit?
1.5mm2
2.5mm2
4mm2
6mm2
What is the usual size cable you would use to wire a final ring power circuit?
1.5mm2
2.5mm2
4mm2
6mm2
What is this tool called?
Pliers
Side-cutter
Hammer
pipe wrench
What is this tool called?
Fret Saw
Hacksaw
jig saw
plunge saw
Using the incorrect tool for the job can cause:
loss of employment; unintended accidents.
injury to a person; damage to the tool.
unintended accidents; increase in productivity .
damage to the tool, decrease in productivity.
What's the commonly used sizes for conduit in electrical installation?
10mm & 16mm.
16mm & 20mm.
16mm & 25mm.
20mm & 25mm.
Identify the item in Fig 6 above.
tee joint.
Inspection joint.
3-way connector.
Inspection tee.
What cable is used for underground supplies?
PVC/PVC
FP200 Gold
SWA
MICC
What type of smoke detection would be used in a boiler room?
Optical Smoke alarm
Ionisation smoke alarm
Heat detector
Call point
What is the maximum operating temperature for PVC thermoplastic?
70⁰
90⁰
65⁰
85⁰
What cable should be used in public buildings and the London underground?
FP200
LSZH
PVC/PVC
SWA
What type of cable is used for fire alarms?
FP200
LSZH
PVC/PVC
SWA
What type of cable would you use for networks?
PVC/PVC
SY cable
Coaxial
Cat 5e
What conduit saddle is used for where cleaning the conduit is required?
Distance
Hospital
Spacer
What dangers must you consider when using fibre optic cable?
Glass shards and laser light
The cable will be hot
The cable will have corrosive substances present
There will be electricity present
What special feature is used in cat 5e cable?
Separated cores
Separated pairs
Twisted pairs
Twisted conductors
What temperature does PVC thermosetting operate up to?
70⁰
90⁰
65⁰
85⁰
What type of cable would be used with ladder containment?
FP200
LSZH
PVC/PVC
SWA
What depth must a cable run through a joist be?
25mm
40mm
30mm
50mm
What is the conduit saddle used for standard use?
Distance
Hospital
Spacer
When would you use compartmental trunking?
Lots of cables
Lighting and socket circuits
When running data cables with power cables
When installing in offices
What statutory legislation are you following with safe isolation?
BS7671
Health & Safety at Work Act
Electricity at Work regulations
Working at Height regulations
What cable would you use to connect a motor to a rotary isolator?
PVC/PVC
SY cable
Coaxial
Cat 5e
Which of these documents is statutory?
Guidance note 3
On-Site-Guide
BS7671
Electricity at Work regulations 89
What type of drawing would you use to determine location of equipment?
Wiring diagram
Schematic diagram
Layout diagram
Circuit diagram
What type of document would you use to determine how a light fitting should be wired?
Wiring diagram
Schematic diagram
Layout diagram
Circuit diagram
It is the duty of all employees under the Health and Safety at Work Act to
work independently
instruct other workers on safety matters
look after the safety of themselves and others
look after their own safety only
The IEE Wiring Regulations (BS 7671)
are statutory regulations
are non-statutory regulations
are part of the Electricity at Work regulations
have been replaced by IEEI Wiring regulations
When transmitting high volume data on a local area computer network, the type of cable most likely to be used is
mineral insulated cable
PVC cable
single wire armoured cable
fibre optic cable
The material used as an insulator on which overhead lines are suspended from pylons is
glass
mica
PVC
rubber
The most suitable type of wiring system for the distribution of three phase electrical energy underground between buildings will be
P.V.C conduit and P.V.C insulated cable
steel trunking and P.V.C insulated cable
steel conduit and P.V.C insulated cable
P.V.C steel wire armoured cable.
With reference to cable the abbreviation micc refers to
mineral insulated concentric cable
mineral insulated cored conductor
mineral isolated cable conductor
mineral insulated copper cable
Before working on an electrical machine an electrician should
isolate and lock off the supply
place a rubber mat in the work area
obtain a set of insulated tools
press the stop button on the starter
Where more than one person is working on equipment, the safest means to prevent unintentional energising of equipment would be to
supply all workers with copies of the same key
leave the key with the security guard
leave a label on the key stating ‘do not use’
fit a special device which takes a lock for each person
A wiring system allowing easy replacement and addition of cables is
PVC conduit
steel wire armoured cable
mineral insulated cable
metallic cable trunking
In an installation where appearance is the most important consideration, the most likely choice of a wiring system will be
ladder racking
mineral insulated cable
armoured cable
cable tray
Copper cored data communication cables are made up of pairs of conductors twisted along their length in order to
reduce electrical interference
add strength to the cable
reduce overall cable size
increase the cable current rating
Inspection bends, elbows and sleeves should be used on long conduit runs to provide a means of
inspecting cables after completing the installation
reducing vibration in the conduit
improving the appearance of the installation
reducing stress on cables when drawing them in
Spring toggles and screws are used when fixing electrical equipment to
hollow walls
brick walls
concrete ceilings
wooden floors
Single core non sheathed non-armoured cables (apart from bonding conductors) must always be installed
in free air with no covering
in conduit or trunking
in plastic clips at half the normal twin and earth spacing
in wall cavities
Ladder racking is a system for
allowing access to storage racks
allowing multiple section extension ladders
supporting armoured cables
supporting vertical cable basket systems
Three factors which would affect the choice of wiring system would include
ambient, aesthetic and animals
architect, animals and arithmetic
corrosion, erosion and season
stress, strain and regulatory
To avoid deformation of long pvc conduit runs, they should be fitted with
expansion loops
fire barriers
non-inspection bends
expansion couplers
The most appropriate fixing method for mounting a large control panel to a brick wall would be
crampets
masonry nails
masonry bolts
30mm woodscrews with plastic plugs
Using the picture above a wall Building Regulations Part A tell us that we can only chase out vertically to what depth of the wall?
One eighth of the wall
One sixth of the wall
One quarter of the wall
One third of the wall
