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2. Referring to the previous problem, what was the global per-capita elec- trical power consumption in 2011? Express your answer in (a) kW, (b) BTU/hr

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2. Referring to the previous problem, what was the global per-capita elec- trical power consumption in 2011? Express your answer in (a) kW, (b) BTU/hr and (c) horsepower. 3. A freight elevator is built to lift a long ton (2200 lbs) a distance of 100 feet in 30 seconds. It is driven by an AC motor. The energy efficiency of the gears and cables is 85%. What is the required power output of the motor

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