PROCTECH 2EC3 Lecture Notes - Lecture 12: Rolling Resistance
19 Mar 2018
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+ % + & = rate ( ) electric motor. Calculate the minimum power rating for the motor. Problem 1: the elevator of a building is to raise a net mass of 400 kg at a constant speed of 12 / using an. Problem 2: you are considering replacing your home"s old furnace that has an efficiency of 54 percent. You are considering a conventional furnace that has an efficiency of 83 percent and costs and a high efficiency furnace that has an efficiency of 96 percent and costs . You will buy the high efficiency furnace if the savings from the natural gas pay for the additional cost within 8 years. In 8 years: 2800+ (8)(675) $, (cid:128)(cid:129) . Choose option 1 because it"s going to cost you less in 8 years. Problem 3: determine the power required for a 2000 kg car to climb a 100 m long uphill road with a slope of.
