2365 Electrical installations technology sample paper

1. Which one of the following directly affects all persons working with electricity in a working environment? 

2. Which one of the following are non-statutory regulations? 

3. Which one of the following is a direct implication of not complying with statutory regulations? 

4. The document showing the location of electrical equipment in an electrical installation is a: 

5. Which one of the following diagram types does not show individual conductors or cables but shows the sequence of equipment? 

6. The symbol shown represents: 

7. Which one of the following is the correct drawing scale where a wall, 4m in length, measures 8cm on a drawing? 

8. 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? 

9. A circuit installed to supply a fire panel would be identified as: 

10. The type of trunking that can be used as a circuit protective conductor is: 

11. The insulation material of mineral insulated metal sheathed cables is absorbent; therefore, the terminations must be:

12. Additional cable supports should be provided in trunking where: 

13. Band I and Band II circuits can be enclosed in the same enclosure, provided that: 

14. Which one of the following is the type of conduit fixing shown? 

15. Which one of the following symbols represents the rating factor for thermal insulation? 

16. Which one of the following is the value of voltage drop, per ampere, per metre, for a 10mm^2 multi-core flat thermoplastic 70°C cable, intended to supply a singlephase circuit? 

17. Which one of the following is the maximum current carrying capacity for a singlecore 6mm^2 70°C thermoplastic insulated nonarmoured cable, enclosed in conduit on a wall installed for a singlephase circuit? 

18. Which one of the following is the value of voltage drop, in millivolts per ampere per metre, for a 4mm^2 multicore thermosetting nonarmoured cable, intended to supply a singlephase circuit? 

19. Which one of the following devices is suitable for an installation supplying an X-ray machine in a hospital? 

20. Which one of the following devices will disconnect in the fastest time if a short circuit current of approximately 400A occurred on a circuit? 

21.Which one of the following is the minimum conduit size suitable for a short straight run containing the following stranded cables:  

• 4 x 1.5mm^2 
• 3 x 2.5mm^2? 

22. Which one of the following is the minimum conduit size suitable for a short straight run containing the following stranded cables: 

• 8 x 1.5mm^2 
• 2 x 2.5mm^2 
• 2 x 4.0mm^2? 

23. Which one of the following is the conduit capacity factor to be used where a 25mm conduit has 2 bend in a 6m run? 

24. The electrical system in which the connection to earth is by an earth electrode is: 

25. Which one of the following earthing arrangements is shown in the diagram? 

26. 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?

27. What is represented by Zs in the following formula: 

Zs=Ze+(R1+R2)? 

28. Which one of the following defines the term ‘main protective bonding conductor’? 

29. Which one of the following is the purpose of the main protective bonding conductor? 

30. Which one of the following is an exposed conductive part? 

31. Which one of the following is metal cable trunking? 

32. Which one of the following is an extraneous conductive part? 

33. Which one of the following methods of generating electricity uses fossil fuels?

34. Which one of the following uses sunlight to generate electricity? 

35. Which one of the following is a transmission voltage? 

36. Which one of the following is a typical distribution voltage for a medium-sized factory where a private substation is located? 

37. In which of the following parts of the electrical distribution network would a step-down transformer be located? 

38. Which one of the following describes the process of a solar photovoltaic system? 

39. Which one of the following is a suitable use for rainwater harvesting? 

40. Which one of the following micro–generation systems requires the least maintenance once installed?