10720891
Descripción
Test por james crowley, actualizado hace más de 1 año
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Creado por james crowley
hace más de 6 años
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Pregunta 1
Pregunta
When carrying out a continuity test would you expect:
Respuesta
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a. A very high reading
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b. No reading at all
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c. A variable reading
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d. A very low reading.
Pregunta 2
Pregunta
A fault in an electric circuit can be caused by:
Respuesta
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a. Low load
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b. Heavy load
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c. Over load
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d. Limited load.
Pregunta 3
Pregunta
Test probes on a multimeter must have a maximum exposed tip of:
Respuesta
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a. 1mm
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b. 2mm
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c. 3mm
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d. 4mm.
Pregunta 4
Pregunta
When working on a system that has had a section of pipework removed, which of
the following should be used?
Respuesta
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a. Permanent polarity bonding
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b. Permanent earth continuity bonding
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c. Temporary polarity bonding
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d. Temporary earth continuity bonding.
Pregunta 5
Pregunta
A radiator fitted near to a shower in a bathroom could require:
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a. Supplementary bonding
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b. Main bonding
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c. Minor bonding
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d. Additional bonding.
Pregunta 6
Pregunta
Where is an MCB fitted?
Respuesta
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a. Consumer unit
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b. Outside socket
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c. Extension lead
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d. Electric shower.
Pregunta 7
Pregunta
The design, installation and testing of electrical systems is covered by:
Respuesta
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a. BS6700
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b. BS1212
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c. BS7671
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d. BS7176.
Pregunta 8
Pregunta
The neutral conductor in fixed-cable installations is identified by the insulation
being coloured:
Respuesta
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a. Red
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b. Green/yellow
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c. Blue
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d. Brown
Pregunta 9
Pregunta
The relationship between current, resistance and voltage is stated in:
Respuesta
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a. Boyle’s law
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b. Ohm’s law
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c. Charge’s law
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d. BS7671.
Pregunta 10
Pregunta
The type of electricity derived from a battery is:
Respuesta
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a. Alternating wattage
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b. Alternating current
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c. Direct wattage
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d. Direct current.
Pregunta 11
Pregunta
Calculate the fuse rating for a 690w, 230v AC central heating pump.
Respuesta
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a. 13 amp
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b. 5 amp
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c. 3 amp
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d. 1 amp.
Pregunta 12
Respuesta
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a. Insulation resistance tester
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b. Digital manometer
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c. Residual current device tester
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d. Approved voltage tester.
Pregunta 13
Pregunta
A domestic consumer unit should be installed:
Respuesta
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a. Only where there is three phase supply
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b. Immediately before the supplier’s sealed fuse unit
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c. On each ring circuit
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d. Immediately after the supplier’s meter.
Pregunta 14
Respuesta
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a. Illuminated fused spur
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b. Double pole pull cord switch
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c. Single pole rocker plate pull switch
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d. Wiring centre pull cord.
Pregunta 15
Pregunta
Which one of the following appliances should have its own separate connection
to the consumer unit?
Respuesta
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a. Immersion heater
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b. Bathroom light
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c. Free-standing fan heater
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d. Gas boiler.
Pregunta 16
Pregunta
A boiler, with a rating of 690watt, 230v, 50Hz has been fitted with a 13 amp fuse.
Would you:
Respuesta
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a. Leave it as it is
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b. Change it for a 3 amp fuse
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c. Fit a 16 amp MCB to protect it
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d. Warn customer not to touch it.
Pregunta 17
Respuesta
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a. 1 gang surface mounted box
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b. 1 gang counter sunk box
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c. 2 gang counter sunk box
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d. 2 gang surface mounted box.
Pregunta 18
Pregunta
Which one of the following could be interrupted by a disconnection of 400v
three-phase supply?
Respuesta
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a. Heating of domestic hot water via immersion
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b. Domestic lighting
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c. Industrial process
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d. Domestic ring main.
Pregunta 19
Pregunta
The normal voltage for a domestic property is:
Respuesta
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a. 415v three phase AC
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b. 240v single phase DC
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c. 230v single phase AC
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d. 110v single phase AC.
Pregunta 20
Pregunta
The flow of electricity through both the live and neutral conductor can be turned
off by using:
Respuesta
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a. Double pole switch
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b. Single pole switch
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c. MCB
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d. Ring circuit.
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