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2365 - Unit 203 Exam Questions and Answers
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The Disability Discrimination Act deals with equal opportunities in relation to employment, provision of goods, services, education and transport and is now known as - ✅✅Equality Act 2010 These give guidance on how to comply with BS7671 - ✅✅IET Guidance Notes Guidance Note 3 gives clarification of BS7671 in regards to; - ✅✅Inspection and Testing 'System consists of 1.5mm2, 3c MICC cable'. This statement may be found in the; - ✅✅Specification A diagram provided to you to allow you to make the necessary connections more easily. (a diagram that shows you how to actually connect the different components) - ✅✅Wiring Which one of the following is the correct drawing scale where a wall, 1.3m in length, measures 5mm on a drawing? - ✅✅1: A garden light is to be positioned 18m away from the house. A 1:50 scale drawing is to be produced. How long will the line on the scale drawing measure? - ✅✅ 36 0mm
A drawing is produced to a scale of 1:75 showing a Consumer Control Unit installed 0.2cm from the corner of a room. Which one of the following is the actual distance from the corner in the room? - ✅✅0.15m Intruder alarm systems are usually connected in: - ✅✅Series (closed circuit) The type of switch required for an electric shower; - ✅✅Double pole pull switch with indicator lamp and mechanical ON/OFF indicator The two cables that run between the switches of a two way lighting circuit are known as; - ✅✅Strappers An A2 standard circuit is : - ✅✅Circuit Type-Radial, Max Area - 75m2, Cable size
- 4mm2, Fuse size - 30/32A Silicone insulated FP200 cables required ferrules. These are no longer required if the cable insulation is; - ✅✅Insudite Which one of the following symbols represents the rating factor when using a BS3036 Semi-enclosed Re-Wirable Fuse? - ✅✅Cf What is the maximum permissible voltage drop of a lighting circuit in a dwelling? - ✅✅6.9V The current carrying capacity of a cable can be shown as; - ✅✅It
What is represented by R2 in the following formula: Zs=Ze+(R1+R2)? - ✅✅Resistance of the circuit protective conductor Which one of the following defines the term earthing conductor? - ✅✅The conductor which links the MET to the means of earthing During an earth fault which of the following situations would be most desirable for exposed and extraneous conductive parts. - ✅✅Exposed parts (230V), Extraneous Parts (230V) Which one of the following is an exposed conductive part? - ✅✅Metal-clad twin socket outlet Part of the electrical installation and not normally live, but can become live under fault conditions' is a definition of an? - ✅✅Exposed conductive part Basic protection is achieved by; - ✅✅All of the answers NOT an advantage of photo-voltaic cells - ✅✅Cheap installation costs When looking at hydroelectric generation, flow and head are best described as; - ✅✅Flow is the rate of water flow per second, Head is a difference in height over a reasonably short distance
Which one of the following are transmission voltages? - ✅✅132kV , 275kV, 400kV Which of the following is not part of the electrical distribution network - ✅✅Electrical distribution board which of the following is used to convert dc to ac - ✅✅Inverter Used to transfer heat from one medium to another - ✅✅heat exchanger Which of the following is NOT a source of Greywater - ✅✅Toilet water A turbines sweeping area must not exceed; - ✅✅3.8m Which of the following is not a renewable source of energy - ✅✅Nuclear Greywater - ✅✅Can be used for irrigation purposes Which of the following must be considered when planning to install a micro- renewable system - ✅✅Location of renewable source, regulations, building location, building fabric Places specific duties on the client, designer and contractors to think about health and safety of a building project throughout its life. - ✅✅Construction design and management Regulations
Which one of the following symbols represents the rating factor when running multiple cables together? - ✅✅Cg Calculate Drop of a cable if the conductor length is 25m, Ib of 2.65A and tabulated volt drop value of 44 mV/A/m. - ✅✅2.9V Determine the correction factor for a 700 thermoplastic cable in an environment with temperatures of 350C - ✅✅0. Which of the following is untrue; - ✅✅In ≥ It Which one of the following devices is suitable for an installation supplying a fluorescent lighting and small motors in commercial premises? - ✅✅BS EN 60898 Type C Which one of the following is the minimum conduit size suitable for a short straight run containing the following cables: · 3 x 1.5mm2 Stranded · 3 x 2.5mm2 Solid · 1 x 1.5mm2 Solid 3 x 2.5mm2 Stranded? - ✅✅20mm Which one of the following is the minimum conduit size suitable for a 4.6m run containing 3 bends, carrying the following stranded cables: · 4 x 1.5mm · 2 x 2.5mm
· 4 x 6.0mm2? - ✅✅32mm Incoming gas and water pipes need to be connected to the main earthing terminal (MET) using; - ✅✅Main protective bonding conductors If 25mm2 tails are used to supply a TNS installation. What is the minimum size main protective bonding conductor to be used? - ✅✅10mm In an installation extraneous and exposed conductive parts reach different potentials during an earth fault. Is this desirable? - ✅✅No, because the difference in potential will allow current to flow
