Mock Test 6
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Question 1 of 40
1. Question
1. Which one of the following are non-statutory regulations?
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Question 2 of 40
2. Question
2. The document showing the location of electrical equipment in an electrical
installation is a:CorrectIncorrect -
Question 3 of 40
3. Question
3. A drawing is produced to a scale of 1:50 showing a socket outlet installed 3.5cm
from the corner of a room. Which one of the following is the actual distance from
the corner in the room?CorrectIncorrect -
Question 4 of 40
4. Question
4. The type of trunking that can be used as a circuit protective conductor is:
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Question 5 of 40
5. Question
5. Additional cable supports should be provided in trunking where:
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Question 6 of 40
6. Question
6. Which one of the following is the value of voltage drop, per ampere, per metre,
for a 10mm2 multi-core flat thermoplastic 70 °C cable, intended to supply a
single-phase circuit?CorrectIncorrect -
Question 7 of 40
7. Question
7. Which one of the following is the value of voltage drop, in millivolts per ampere
per metre, for a 4mm2 multi-core thermosetting non-armoured cable, intended to
supply a single-phase circuit?CorrectIncorrect -
Question 8 of 40
8. Question
8. Which one of the following devices will disconnect in the fastest time if a short
circuit current of approximately 300A occurred on a circuit?CorrectIncorrect -
Question 9 of 40
9. Question
9. Which one of the following is the minimum conduit size suitable for a short
straight run containing the following stranded cables:
8 x 1.5mm2
2 x 2.5mm2
2 x 4.0mm2?CorrectIncorrect -
Question 10 of 40
10. Question
10. The electrical system in which the connection to earth is by an earth electrode is:
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Question 11 of 40
11. Question
11. Which one of the following is the correct name of the component which links the
main earthing terminal of an installation to the means of earthing?CorrectIncorrect -
Question 12 of 40
12. Question
12. Which one of the following defines the term ‘main protective bonding conductor’?
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Question 13 of 40
13. Question
13. Which one of the following is an exposed conductive part?
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Question 14 of 40
14. Question
14. Which one of the following is an extraneous conductive part?
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Question 15 of 40
15. Question
15. Which one of the following uses sunlight to generate electricity?
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Question 16 of 40
16. Question
16. Which one of the following is a typical distribution voltage for a medium-sized
factory where a private sub-station is located?CorrectIncorrect -
Question 17 of 40
17. Question
17. Which one of the following describes the process of a solar photo-voltaic
system?CorrectIncorrect -
Question 18 of 40
18. Question
18. Which one of the following micro-generation systems requires the least
maintenance once installed?CorrectIncorrect -
Question 19 of 40
19. Question
19. State the minimum size for a supplementary bonding conductor that is protected against mechanical damage
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Question 20 of 40
20. Question
20. Identify the name of the earthing conductor that connects exposed conductive parts to the main earthing terminal (MET)?
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Question 21 of 40
21. Question
21. Which one of the following uses the burning of plants/crops to produce heat?
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Question 22 of 40
22. Question
22. Which one of the following is termed an ‘extraneous conductive part’?
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Question 23 of 40
23. Question
23. Which one of the following term describes ‘Basic Protection’ ?
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Question 24 of 40
24. Question
24. A protective device has a current ‘rating’ of 10A and a ‘fusing current’ of 20A
calculate the ‘fusing factor’ for the deviceCorrectIncorrect -
Question 25 of 40
25. Question
25. What is the function of a ‘return flange’ on cable tray ?
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Question 26 of 40
26. Question
26. A 5.5A load has a conductor protected by a 6A mcb and has the following correction factors applied; Ca = 0.94 and Cg = 0.6. Calculate the ‘tabulated current’ required.
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Question 27 of 40
27. Question
27. What is the function of the small ‘copper strap’ that links two pieces of metallic trunking together ?
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Question 28 of 40
28. Question
28. If too many appliances are connected to a 4-way extension lead, what fault may result?
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Question 29 of 40
29. Question
29. Which one of the following is a ‘rewirable fuse’ type ?
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Question 30 of 40
30. Question
30. What is the definition of a device designed to ‘make and break contact against the flow of current i.e. on load’?
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Question 31 of 40
31. Question
31. If a circuit conductor has had no ‘correction factors’ applied, identify the current value that is used to make the final conductor size selection.
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Question 32 of 40
32. Question
32. What is ‘grommet strip’ used for ?
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Question 33 of 40
33. Question
33. What type of tray may be used for carrying large power cables in a factory environment, due to its exceptionally high strength ?
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Question 34 of 40
34. Question
34. With reference to RCD protection, state the maximum Earth Fault Loop Impedance that must not be exceeded for 30 and 100mA devices supplied at 230v AC.
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Question 35 of 40
35. Question
35. What is ‘fusing factor’ with regard to protective devices?
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Question 36 of 40
36. Question
36. What type of cable enclosure system should not be used in areas with regular changes in ambient temperature ?
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Question 37 of 40
37. Question
37. What term is given to ‘double insulated’ equipment?
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Question 38 of 40
38. Question
38. What is the minimum space allocated for cooling inside a ‘ducting’ ?
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Question 39 of 40
39. Question
39. A circuit has a 50 sqmm line conductor. Select an appropriate earthing conductor size
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Question 40 of 40
40. Question
40. With reference to RCD protection, calculate the maximum theoretical Earth Fault Loop Impedance value for a 100mA device supplied at 230v AC.
CorrectIncorrect