Physics (AS & A Level) · Feb / March 2016 · Paper 12 · Question 17
The pump of a water pumping system uses 2.0 kW of electrical power when raising water. The pumping system lifts 16 kg of water per second through a vertical height of 7.0 m. What is the efficiency of the pumping system?
- A1.8%
- B5.6%
- C22%
- D55%
As printed in the paper
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Correct answer: D. 55%
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