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