QI. A factory has a 240V supply from which the following loads are taken: Lighting: Three hundred 150 w/each, four hundred 100 w/each and five hundred 60w/each lamps. Heating: 100 kw. Motors: A total of 44.76kw (60HP) with an average efficiency of 75%. Others: various loads taking a current of 40A. Assuming that > The lighting load is on for a period of 4hours /day. - The heating for 10 hours/ day and the remainder for 2 hours / day. Calculate 1. The weekly consumption of the factory in kWh when working on a 5 day/week. 2. What current is taken when the lighting load only is switched on?

QI. A factory has a 240V supply from which the following loads are taken: Lighting: Three hundred 150 w/each, four hundred 100 w/each and five hundred 60w/each lamps. Heating: 100 kw. Motors: A total of 44.76kw (60HP) with an average efficiency of 75%. Others: various loads taking a current of 40A. Assuming that > The lighting load is on for a period of 4hours /day. - The heating for 10 hours/ day and the remainder for 2 hours / day. Calculate 1. The weekly consumption of the factory in kWh when working on a 5 day/week. 2. What current is taken when the lighting load only is switched on?

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter13: Heating Control Devices

Section: Chapter Questions

Problem 1RQ

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