Mathematics, 01.10.2021 04:00 testedagent2823
A small machine shop, with 30 hp of connected load, purchases electricity at the following monthly rates (assume any demand charge is included in this schedule) per hp of connected load: First 50 kWh at 12.6¢ per kWh Next 50 kWh at 10.6¢ per kWh Next 150 kWh at 9.0¢ per kWh Over 250 kWh at 7.7¢ per kWh The shop uses 2800 kWh per month. (a) Calculate the monthly bill for this shop. What are the marginal and average costs per kilowatt-hour? (b) A contract for additional business would require more operating 144 hours per day. This will use an extra 1200 kWh per month. What is the âcostâ of this additional energy? What is this per kilowatt-hour? (c) New machines would reduce the labor time required on certain operations. These will increase the connected load by 10 hp, but since they will operate only on certain special jobs, will add only 100 kWh per month. In a study to determine the economy of installing these new machines, what should be considered as the âcostâ of this energy? What is this per kilowatt-hour?
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A small machine shop, with 30 hp of connected load, purchases electricity at the following monthly r...
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