1 The statutory regulations that set standards which will reduce the risk of electric shock, burns and fire due to the use of electrical systems are
a The Electricity at Work Regulations
b The IEE Wiring Regulations
c The Personal Protective Equipment Regulations
d The health and Safety at Work Act
2 Specific guidance is given to the selection of cable sizes, isolation and switching, and inspection and testing for electrical installations in
a The Health and Safety at Work Act
b The Electricity at Work Regulations
c The Electricity Supply Regulations
d The IEE Regulations
3 In high rise buildings lightning conductors must be bonded to the
a building girder work
b water and gas supplies
c the installation earth
d earthing rod
4 BSEN numbers on electrical equipment signifies compliance with
a International standards
b European standards
c English standards
d Insulation standards
5 Exploded views in manufactures manuals are generally used to show
a complex components with many parts
b large machine parts
c wiring diagrams of machines
d machines having few parts
6 An electrical contractor drawing up a list of materials and equipment required to complete an installation will need access to
a delivery records
b drawings and specifications
c circuit diagrams
d day work sheets
7 A drawing measuring 2m x 1m representing a site measuring 2km x 1km will be drawn to a scale of
a 1:500
b 1:1000
c 1000:1
d 500:1
8 To check the ongoing progress of a contract, the contracts manager would use
a work sheets and time sheets
b operation and data sheets
c delivery records and reports
d operation sheets and memorandum
9 Circuits used to measure and contraol temperature, air flow, and humidity in a building are called
a emergency management circuits
b environmental control circuits
c power control circuits
security control circuits
10 A wiring system allowing easy replacement and addition of cables as
a PVC conduit
b steel wire armoured cable
c mineral insulated cable
d metallic cable trunking
11 In an installation where appearance is the most important consideration, the most likely choice of a wiring system will be
a ladder racking
b mineral insulated cable
c armoured cable
d cable tray
12 When calculations show that the voltage drop between the supply terminals and a load will exceed 4% of the supply voltage the action to be taken is to
a limit the time the load is connected
b increase the supply voltage using a transformer
c increase the size of the cable supplying the load
d connect the load at off peak times only
13 To comply with IEE Wiring Regulations the voltage drop on a three phase 400v circuit should not exceed
a 4v
b 8v
c 16v
d 32v
14 Copper cored data communication cables are made up of pairs of conductors twisted along their length in order to
a reduce electrical interference
b add strength to the cable
c reduce overall cable size
d increases the cable current rating
15 A component designed to disconnect a supply under full load conditions is
a a fuse
b an isolator
c a detector
d a switch
16 In situations where there is a risk of an explosion due to the presence of fumes and gases electrical switches and control equipment must be
a remotely controlled
b mounted in flameproof enclosures
c placed outside the danger zone
d connected to a low voltage supply
17 Supplementary equipotential bonding is required in all
a outbuildings
b low voltage installations
c bathrooms
d dinning rooms
18 The TT system of earthing is usually used in
A rural areas
B urban areas
C domestic installations
D industrial installations
19 An earthing system that can only be used in special circumstances and uses a combined neutral and earth conductor in the supply and installation is the
a TT system
b TN-S system
c TN-C-S system
d TN-C system
20 Isolators used to isolate electrical equipment are designed to operate under
a full load conditions
b no-load conditions
c overload conditions
d short circuit conditions
21 Before commencing work on a site a contracting electrician should identify
a hazards and personal protective equipment required
b the location ot the canteen and dinning facilities
c the site managers office
d the name and telephone number of the client
22 When working on electrical equipment the supply should be
a switched off using buttons
b short circuited to ensure it is not live
c isolated and locked off in the off position
d left connected and treated with care
23 Inspection bends, elbows and sleeves should be used on long conduit runs to provide a means of
a inspecting cables after completing the installation
b reducing vibration in the conduit
c improving the appearance of the installation
d reducing stress on cables when drawing them in
24 When using metal trunking as a circuit protective conductor, continuity is maintained at all joints by
a fitting copper continuity straps
b brazing the joints
c removing the paint from the trunking
d drilling and fitting extra fitting screws
25 Spring toggles and screws are used when fixing electrical equipment to
a hollow walls
b brick walls
c concrete ceilings
d wooden floors
26 Armoured cables must be supported at regular intervals as specified in BS7671 in order to
a reduce vibration in cables
b reduce stress on cables
c increase air circulation round cables
d improve the appearance of installations
27 After cutting and threading conduit, burrs should be removed using a
a reamer
b pair of pliers
c knife
d spanner
28 Portable power tools should be inspected
a every 3 months
b after being repaired
c before and after use
d when being serviced
29 Holes in floors and ceilings should be restored with suitable materials and to the original thickness at the completion of an installation in order to
a prevent the loss of heat
b restore the strength of the building
c secure cables and conduits installed
d prevent the spread of fire
30 Dangerous waste materials produced when terminating optical cables should be
a taken off site and placed in suitable containers
b left on site with instructions for disposal
c thrown outside buildings
d ignored and left in situ
