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Raju brought a motor pump from a shop. The efficiency of the motor pump is printed on the label as 60%.1. The efficiency of a water pump is 60%. What is . meant by this?2. Can you design an engine of 100% efficiency? Justify your answer. |
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Answer» 1. Efficiency means that, 60% of the total energy received is converted into useful work. 2. The efficiency of heat engine η = 1 – \(\frac{T_2}{T_1}\). The efficiency will be 100% if T2 = OK, both those conditions cannot be attained practically. So art engine can’t have 100% efficiency. |
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