Test
Electrical Test 2
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Preguntas del test (25)
11/ Which British Standard details the requirements for the correct installation of electrical components in domestic properties?
- Aa) BS 5449
- Bb) BS 6700
- Cc) BS 7671
- Dd) BS 8000
22/ Which of the following is the correct description of a spur circuit?
- Aa) Supply from the meter to a component
- Bb) Supply from the consumer unit to an immersion heater
- Cc) Branch connection from a ring main circuit
- Dd) Branch connection from a main earthing cable
3What component is used in a domestic property to house the circuit protection devices?
- Aa) Junction box
- Bb) Meter
- Cc) 13 amp socket outlet
- Dd) Consumer unit
4What type of component is shown in the following picture?
- Aa) RCBO
- Bb) RCD
- Cc) MCB
- Dd) Fuse
5What is the circuit breaker rating required to control the supply to an 8.5kW
instantaneous electric shower fed with a 230v AC supply?- Aa) 13 amp
- Bb) 16 amp
- Cc) 32 amp
- Dd) 40 amp
66/ A capacitor may be fitted to which of the following components?
- Aa) Jacuzzi pump
- Bb) Consumer unit
- Cc) Junction box
- Dd) Room thermostat
7Which of the following plumbing components in a domestic property will usually require a 2.5mm² heat proof flex?
- Aa) Electric shower
- Bb) Immersion heater
- Cc) Central heating pump
- Dd) Macerator WC
8Which of the following correctly lists the sheathing colour in a modern 3 core flex in this order Live-Neutral-Earth
- ABlue - Brown - Green and Yellow
- BYellow- Blue- Brown/Green
- CRed Brown Green/Yellow
- DBrown-Blue-Green/Yellow
9What is the name of the connector shown in the following diagram?
- Aa) Pillar terminal
- Bb) Strip connector
- Cc) Claw washer
- Dd) Terminal connector
10Knots and coils should not be left in cables during installation as they can lead to –
- Aa) Corrosion of the cable
- Bb) Reduction in resistance of the circuit
- Cc) Reduction in cable insulation
- Dd) Heating of the cable during use
11A rubber bush is used where –
- Aa) A cable passes under a plastic sheathing
- Bb) Cables cross over each other
- Cc) A cable passes into a metal enclosure
- Dd) An unprotected cable requires insulation.
12The main wiring connections for a fully pumped central heating system are usually housed in which of the following?
- Aa) Single pole switch
- Bb) Wiring centre
- Cc) Consumer unit
- Dd) Double pole switch
13Which of the following components includes a label reading 'SAFETY – ELECTRICAL CONNECTION – DO NOT REMOVE?'
- Aa) Junction box
- Bb) Room thermostat
- Cc) Miniature circuit breaker
- Dd) Earth bonding clip
14What type of bonding is applied to permanently earth a remote plumbing appliance to the main earth terminal when the pipework connecting to it is jointed by plastic fittings?
- Aa) Temporary continuity bond
- Bb) Main bonding
- Cc) Additional bonding
- Dd) Supplementary bonding
15What is the maximum distance ‘X’ from the gas meter outlet to the main earthing point on the gas line?
- Aa) 200mm
- Bb) 450mm
- Cc) 600mm
- Dd) 1000mm
16What type of electrical test is used to establish that the live and neutral conductors in a circuit have not been crossed?
- Aa) Insulation resistance test
- Bb) Earth fault loop impedance test
- Cc) Earth continuity test
- Dd) Polarity test
17Which of the following tests is used to ensure that exposed metalwork in a system is connected to earth?
- Aa) Insulation resistance test
- Bb) RCD test
- Cc) Earth continuity test
- Dd) Polarity test
18Which of the following test instruments is used during an electrical safe isolation procedure?
- Aa) RCD tester
- Bb) Insulation resistance tester
- Cc) Mega – ohmmeter
- Dd) Approved voltage indicating device
19Which of the following is an essential part of safely isolating the circuit to an immersion heater at the consumer unit?
- Aa) Removing and taping the wires
- Bb) Locking off the MCB
- Cc) Removing the MCB
- Dd) Removing the main meter fuse
20Which of the following describes a use of the component shown in the diagram?
- AMaking a branch connection into an existing water line
- BRe-connecting the wires to an immersion heater
- CRe-connecting the wires to a room thermostat
- DMaking the final pipe connection to a plastic bath
21
21/ Which device only utilizes Earth faults?- Aa) RCBO
- Bb) MCB
- Cc) FUSE
- Dd) RCD
22Insulation resistance is tested to
- Aa) 110V
- Bb) 230V
- Cc) 415V
- Dd) 500V
23Which system utilizes combined earth and neutral cable for earthing on suppliers incoming supply?
- Aa) TNCS
- Bb) TNS
- Cc) TNC
- Dd) TT
24If an earth was not connected to the main earth block, what would the consequences be?
- Aa) The protective devices would be activated
- Bb) The system would short circuit
- Cc) There would be no power available in the appliance
- Dd) A fire would start
25When using a single core wire, how should it be installed?
- Ae) Must be fitted with an RCD
- Bf) Must be fitted with a fuse
- Cg) Must be fitted within a conduit
- Dh) Must be connected to earth
Información
- Descripción
- Test sobre Electrical Test 2, creado por Jarmo Tossavainen el 21/05/2018.
- Autor
- Jarmo Tossavainen
- Idioma
- English
- Visitas
- 244
- Valoración
- Aún sin valoraciones Valora este test