1) What is the component shown a) 1 gang countersunk box.  b) 1 gang surface mounted box.  c) 2 gang surface mounted box.  d) 2 gang countersunk box. 2) What part of the Building Regulations deals with the installation of electrical components? a) Part G.  b) Part J.  c) Part L.  d) Part P. 3) Which one of the following is Component X ? a) Main switch.  b) Meter.  c) Main earth terminal.  d) Main fuse. 4) Which one of the following is Component X ? a) Main switch.  b) Meter.  c) Main earth terminal.  d) Main fuse. 5) What is the component shown a) Double pole pull cord switch.  b) Single pole rocker plate switch.  c) Fused spur switch with neon.  d) Wiring centre. 6) On finding that the overcurrent protection device for an immersion heater in a domestic property has been wrongly sized, a plumber should report the matter to a) CORGI  b) Electricity supply company  c) The local water company  d) The customer. 7) What is the component shown in  a) Double gang dry lining box.  b) Double gang surface mounted box.  c) Single gang surface mounted box.  d) Single gang countersunk box. 8) The maximum diameter that a hole can be drilled in a timber floor joist for the purposes of running electrical cables is a) ⅛ the depth of the floor joist  b) ¼ the depth of the floor joist  c) ½ the depth of the floor joist  d) ¾ the depth of the floor joist. 9) What is the component shown a) Terminal strip.  b) Temporary continuity bond.  c) Earth bonding clamp.  d) Pillar terminal fixing. 10) Which one of the following is an example of an item of portable electrical equipment? a) Instantaneous electric shower.  b) Immersion heater.  c) Central heating control system.  d) Large hammer drill. 11) When wiring up a plug top, the connections should be made in a way to ensure that if the cable is pulled with sufficient force to remove it from the plug a) The earth connection would be the last to be broken  b) The live connection would be the last to be broken  c) The neutral connection would be the last to be broken  d) All connections should break together. 12) Using the Ohms Law formula Voltage = Current x Resistance. Calculate the current flowing through a 240 volt circuit, which one of the following has a resistance of 60 ohms? a) 2 A.  b) 4 A.  c) 12 A.  d) 24 A. 13) What type of overcurrent protection device is this? a) Cartridge fuse.  b) High breaking capacity fuse.  c) Residual current device.  d) Miniature circuit breaker. 14) What type of overcurrent protection device is this? a) Cartridge fuse.  b) High breaking capacity fuse.  c) Residual current device.  d) Miniature circuit breaker. 15) Equipotential bonding is not required for a) Plastic service pipes and ducting  b) gas, water and other metallic service pipes and ducting  c) Metallic central heating and air conditioning systems  d) Exposed metallic structural parts of buildings and lightning protection systems 16) The neutral conductor in a cord to an immersion heater is coloured a) green/yellow  b) Red  c) Blue  d) Brown. 17) Which one of the following tests can be carried out to ensure that any exposed metalwork within an installation is not a safety hazard? a) Polarity test.  b) Earth continuity test.  c) RCD test.  d) Insulation resistance test. 18) In addition to main equipotential bonding of services within a building, supplementary bonding may also be required where a) Acrylic baths are fitted in the system  b) The different services enter the building at widely spaced points  c) Plastic waste systems are used  d) Metal pipework is jointed by plastic connectors. 19) A Residual Current Device (RCD) protecting a domestic ring main circuit is usually designed to operate when detecting a fault above a) 10 mA  b) 20 mA  c) 30 mA  d) 100 mA. 20) Which one of the following is the correct type of isolation switch to use in a bathroom to isolate an instantaneous electric shower? a) Single pole pull cord switch.  b) Single pole wall switch.  c) Double pole wall switch.  d) Double pole pull cord switch. 21) What is the normal rating of a miniature circuit breaker (MCB) fitted to provide overcurrent protection to an immersion heater circuit? a) 6 A.  b) 16 A.  c) 32 A.  d) 40 A. 22) When cables are installed through holes in timber floor joists, the minimum distance between the top of the cable and the underside of the floor joist is a) 25 mm  b) 50 mm  c) 75 mm  d) 100 mm. 23) What type of electrical cord is shown a) Heat resisting PVC insulated and sheathed 3 core flexible cord.  b) PVC insulated and sheathed twin and earth flat wiring cable.  c) PVC insulated and sheathed 3 core and earth flat wiring cable.  d) PVC insulated bell wire. 24) Which one of the following should not be positioned within reach of a person using a bath or shower? a) Pull cord light switch.  b) Battery operated drill.  c) Standard rocker plate switch.  d) Shaver supply unit. 25) The process of isolating an electrical component in order to carry out work on that component is known as a) Commissioning  b) Designing  c) Permanent decommissioning  d) Temporary decommissioning. 26) What is the name of the piece of equipment shown a) Insulation resistance tester.  b) Approved voltage indicating device.  c) Residual current device tester.  d) Digital manometer. 27) Which one of the following should be advised before isolating an unsafe electric shower in a private house? a) Water inspector.  b) Building control officer.  c) Householder.  d) NICEIC inspector. 28) A warning notice which confirms that an electric circuit has been safely isolated and is being worked on should be placed a) At the point that work is taking place  b) At the point of electrical isolation of the circuit  c) Next to the main meter  d) On the front door of the property. 29) What is the main reason for having a fixed procedure for decommissioning an electrical system or component? a) To ensure that the supply can be easily turned on again.  b) To ensure that someone working on the system will not receive an electric shock.  c) So that the work can be carried out as quickly as possible.  d) The procedure keeps costs on the job to an absolute minimum. 30) What is the name of the item shown a) Earth bonding clamp.  b) Temporary earth continuity bond.  c) Testing loop.  d) Neutral conducting device.

202 Electrical Principles 4

Imprimir
Incrustar

Tauler de classificació

Estil visual

Opcions

Canvia de fonament

Restaurar desada automàtica: ?