A portable generator produces 2.5 kW of mechanical work with an efficiency of 0.20 to supply electricity
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A portable generator produces 2.5 kW of mechanical work with an efficiency of 0.20 to supply electricity at a work site.
(a) If the efficiency is increased but the work output remains the same, will the rate of fuel consumption by the engine increase, decrease, or stay the same? Explain.
(b) Will the rate of waste heat emission increase, decrease, or stay the same? Explain.
(c) Calculate the rates of fuel consumption and waste heat emission for engine efficiencies of 0.20 and 0.30.
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