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87 questions
What is the name of this fitting?
union
elbow
tee
coupling
What is the name of this fitting?
90
tee
elbow
coupling
What is the name of this fitting?
45
male adapter
reducer
union
What is the name of this fitting?
45 degree elbow
Bent coupling
C x C sweat 90
C x C reduder
What is the name of this fitting?
90
Copper sweat 90
Street 45
Street 90
End feed elbow
Solder ring tee
Compression Elbow
Push fit Elbow
Stock and die set
Stiltons pipe wrench
What is this picture of?
LCS pipe bender bender
Copper pipe bender
SDS drill
Bench press
Gate valve
The building regulations that cover electrical work is?
Part L
Part G
Part J
Part P
The British Standard that covers electrical work is
BS 6700
BSEN 806
BS1212
BS7671
Under building regulation part P you are not allowed to work in any Danger zones, Which of the following are considered danger zones?
bathroom, kitchen or outhouse
Dinning room, Bedroom
Airing cupboard, Landing
All of the above
Mains electricity is 230 V ?
AC
DC
2CV
PCB
This picture shows
A step down transformer
A step up transformer
A portable battery
A robot in disguise
The wiring to all the lighting in a domestic house is know as?
The ring main
Radial circuit
Spur outlet
Socket ring
What size MCB protects the ring main?
6 amp
32 amp
13 amp
16 amp
What size MCB protects the immersion heater?
6 amp
32 amp
13 amp
16 amp
Which of the following are earthing systems in a domestic house?
TNS, TNCS, TT
MGP, TT, WSB
NTS, ATS, TT
BTCC, TT, BTC
This picture shows a?
RCD
MCB
RCBO
Fuse
This picture shows a?
RCD
MCB
RCBO
Fuse
This picture shows a?
RCD
MCB
RCBO
Fuse
What size cable should be used on the ring main?
1.5 mm
2.5 mm
6 mm
10 mm
What type of flex should be fitted to an immersion heater?
20 amp heat proof flex
13 amp heat proof flex
20 amp flex
13 amp flex
What unit is used to measure voltage?
Ohms
Omega
Volts
Amps
What unit is used to measure current?
Ohms
Omega
Volts
Amps
Which is the right form of Ohm's Law?
V=I/R
V=R/I
I=V/R
I=R/V
What is the voltage of a circuit with 4 ohms of resistance and 3 amps of current?
12 V
21 V
4/3 V
3/4 V
What is the current in a circuit with 6 ohms of resistance and a battery containing 24 Volts?
1/4 A
144 A
4 A
0.4 A
What is the resistance of a lightbulb that experiences 9 Volts and 3 amps of current?
1/3 ohms
3 ohms
27 ohms
9 ohms
If switch 7 was open, which device(s) would turn on?
none
A, B, C, D, F, G
A, B, C, D, E
all of them
If a circuit had 4 D-Cell batteries (each 1.5 V) and a lightbulb with resistance of 2 ohms, what is the current that flows through the circuit?
2 A
3 A
6 A
8 A
What is voltage?
the amount of push the electrical source supplies to the circuit
how much a given device resists the flow of electric current
flow of electric charge
none of the above
What is resistance?
the amount of push the electrical source supplies to the circuit
how much a given device resists the flow of electric current
flow of electric charge
none of the above
What is the first thing i should do in regards to safe isolation?
Seek permission
Lock off with key in pocket
Make sure my equipment is working
Identify circuit
What is the second step to safe isolation?
Identify the circuit
Lock off
Lock of with key in pocket
Start work
What is classed as a suitable testing instrument?
Approved voltage indicator
Approved voltage incident
Apple voltage indicator
Unapproved voltage indicator
On a single phase system how many test are required to prove that the circuit is de-energized?
3
6
9
12
Why do we seek permission first?
So we know its safe to turn off the power.
Its polite
My boss said i need to.
Don't know.
a buildup of electric charges on an object
static electricity
electric force
electrical circuit
electric discharge
the path that an electric current takes
electrical circuit
static electricty
electric force
electric current
a complete loop without any breaks in it through which electric current flows
open circuit
closed circuit
Which of the following are Insulators of Electricity?
(multiple answers)
glass
silver
copper
many plastics
sand
a material in which electric charge cannot easily flow
conductor
insulator
Which of the following is NOT a statutory document
IEE Wiring Regulation BS 7671
Electricity Safety Quality and Continuity Regulations
Health and Safety at Work Act
Electricity at Work Regulations
What is the maximum percentage of trunking that can be filled with cable
35%
55%
65%
45%
Which one of the following is a suitable use for rainwater harvesting
Toilet flushing
Drinking water
Cooking water
Baths/showers
What is the main purpose of equipotential earth bonding?
To make an installation more complex
To earth every piece of exposed metalwork
To protect persons from electric shock
To satisfy the regulations
An example of an exposed conductive part would be
A radiator in a bathroom
Kitchen sink
A gas service pipe
The casing of a metal distribution board
Fire alarm systems are designed to protect
Property
Life
Both
All of the above
A test of continuity at each socket-outlet or a ring final circuit is carried out to ensure that
The polarity of sockets is correct
All cables are of the same construction
The ring has not been interconnected
All cables are of the same size
Found in electrical devices and helps to stop too much current from damaging the device
circuit
current
fuse
Why are these bird safe?
They are only touching one wire, so the current has nowhere to go
They are touching two different wires, so the current cannot flow to the ground
They are touching a wire and a pole connected to the ground, so the current can only flow to the ground
The device shown is a
RCD
Transformer
Proving Unit
Storage Battery
The correct voltage to use on a construction site is
110 Volts
230 Volts
400 Volts
12 Volts
How often should electrical tools be PAT tested when they are used on building sites
every 1 month
every 3 months
every 6 months
every 12 months
A visual inspection should be carried out on electrical tools
at least once every week
at least once every month
at least once every 3 months
every time before it is used
the device identified is a
multi meter
proving unit
voltage indicator
transformer
The symbol shown means that the appliance
needs an earth connection
does not need an earth connection
is safe to use
operates at 110 Volts
the symbol shown means that the appliance
needs an earth connection
does not need an earth connection
is double insulated
needs to operate at 110 volts
the correct colour coding for the wiring of a plug would be
earth green and yellow / blue line / brown neutral
earth green and yellow / blue neutral / brown line
earth blue / neutral green and yellow / brown line
earth brown / neutral blue / line green and yellow
it is necessary to fully unwind an electrical extension cable
To enable the electricity to flow more easily
to provide a trip hazard
to prevent heat build up and melting of the cable
to make it easier to connect portable tools
The equipment shown is a
temporary continuity bond
earth bond
electrical jump leads
continuity tester
the purpose of earthing on electrical equipment is to
allow the appliance to work properly
to reduce the voltage to an acceptable level
to prevent you getting an electrical shock
increase the efficiency of the appliance
the correct fire extinguisher for an electrical fire would be
Water
Foam
CO2
Dry Powder
the device shown is a
RCD
Extension Plug
Voltage indicator
transformer unit
A safety sign that warns you of an electrical hazard would be coloured
white with red border
yellow with black border
blue and white
green and white
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