Technical Theory Question Paper

Technical Theory

Course:Craft Certificate In Electrical Installation

Institution: Christian Industrial Training Centre question papers

Exam Year:2012

1.) Explain what is meant by the term "looping" as used in installation of lighting
circuits (2mks)

2.) With the aid of a diametric diagram, describe how to wire two lamps connected in
parallel and controlled from three independent positions usin junction boxes (6mks)

3.) State two advantages of using junction boxes (2mks)

4.) Define the following terms (i) Final circuit
(ii)Point (4mks)

5.) Highlight any five consumer final circuits giving an example of each (5mks)

6.) State any I.E.E regulations governing the following consumer final circuits
(i) Ring sockets
(ii) Water heaters
(iii)Lighting circuits
(iv) Consumer control unit (5mks)

7.) With the aid of a schematic wiring diagram, describe the sequence of control at the
consumer intake point (6mks)

8.) State three I.E.E regulations governing equipments at the co0nsumer intake point (3mks)

9.) Distinguish between a splitter unit and a consumer control unit (4mks)

10.) State three main functions of the main switch gear as stated in the I.E.E
regulations (3mks)

11.) Define the following terms (i) Testing (ii) Inspection (2mks)

12.) Explain what is a completion certificate (2mks)

13.) With the aid of a diagram describe the procedure for performing an installation
resistance test on a two wire installation

11.)

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