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<=KNEC Craft Certificate in Electrical and Electronics Engineering(Power Option) Module II : Estimating and Tendering Past Paper July 2020
A hall measuring 36m x 12m is to be illuminated by 150 watts lamps. Illumination required is 60 lux. The lamp efficiency is 15.5 lumen/watts: depreciation factor is 1.3 and utilization factor is 0.5:
(i) Determine the number of lamp required;
(ii) Sketch the layout of the lamps.
(i) Determine the number of lamp required;
(ii) Sketch the layout of the lamps.
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Questions List:
1. Explain each of the following as used in illumination: (i) Luminous flux; (ii) Uniform point source of light
2. With aid of a diagram, derive the expression for the consine law of illumination
3. A hall measuring 36m x 12m is to be illuminated by 150 watts lamps. Illumination required is 60 lux. The lamp efficiency is 15.5 lumen/watts: depreciation factor is 1.3 and utilization factor is 0.5: (i) Determine the number of lamp required; (ii) Sketch the layout of the lamps.
4. Explain : (i) Estimation in relation to construction projects; (ii) Measurement as used in (a) (i).
5. A product is used by an industry in batches. The direct material cost is Ksh 16,000 and labour cost is Ksh20, 000, factory on cost is 20% of the total cost and labour cost. Overhead charges are 12% of the factory cost. Determine the: (i) Prime cost (ii) Total cost of production.
6. Explain the term ‘tender’
7. List four types of tender documents in an electrical installation project
1. Explain each of the following as used in illumination: (i) Luminous flux; (ii) Uniform point source of light
2. With aid of a diagram, derive the expression for the consine law of illumination
3. A hall measuring 36m x 12m is to be illuminated by 150 watts lamps. Illumination required is 60 lux. The lamp efficiency is 15.5 lumen/watts: depreciation factor is 1.3 and utilization factor is 0.5: (i) Determine the number of lamp required; (ii) Sketch the layout of the lamps.
4. Explain : (i) Estimation in relation to construction projects; (ii) Measurement as used in (a) (i).
5. A product is used by an industry in batches. The direct material cost is Ksh 16,000 and labour cost is Ksh20, 000, factory on cost is 20% of the total cost and labour cost. Overhead charges are 12% of the factory cost. Determine the: (i) Prime cost (ii) Total cost of production.
6. Explain the term ‘tender’
7. List four types of tender documents in an electrical installation project
