. Motor drive for a wagon factory. - 2 hrs. friction load r Average Load of machines and fan Total average loud in both departments Estimate of yearly cost of power for various average loads and different prices per Exhaust fans assumed to run contin- uously at full load of 25 3000 working hrs. per year. Price of power per , .01 .02 .03 .04 M It 11 It 44. 76 Exhaust fans 25 HP Load of machines 10 20 477;60 30 40 9

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. Motor drive for a wagon factory. - 2 hrs. friction load r Average Load of machines and fan Total average loud in both departments Estimate of yearly cost of power for various average loads and different prices per Exhaust fans assumed to run contin- uously at full load of 25 3000 working hrs. per year. Price of power per , .01 .02 .03 .04 M It 11 It 44. 76 Exhaust fans 25 HP Load of machines 10 20 477;60 30 40 - Total cost - machines and fans 35 45 55 65 Comparison of Power Costs. Total cost of Power steam drive !; less energy cost - individual drive - combination drive Llaximum allowable amounts for energy-individual drive ,^ Combination drive s a i ?3 BE / \ / \ / s / \ \ o ?motordriveforwag00shoe

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