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Efficiency of Various Machines

Sr. No. Name of Machine Efficiency
1 Electric Motors 0.8 to 0.9
2 I.C. Engines 0.25 to 0.30
3 Steam Engines 0.15 to 0.2
4 Steam Turbines 0.18 to 0.22
5 Water Turbines 0.85 to 0.9