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A machine does 1200 J of work in 60 seconds. What is its efficiency if the input energy is 2000 J? (2022)

Practice Questions

1 question
Q1
A machine does 1200 J of work in 60 seconds. What is its efficiency if the input energy is 2000 J? (2022)
  1. 60%
  2. 70%
  3. 80%
  4. 90%

Questions & Step-by-step Solutions

1 item
Q
Q: A machine does 1200 J of work in 60 seconds. What is its efficiency if the input energy is 2000 J? (2022)
Solution: Efficiency = (Output Work / Input Energy) * 100 = (1200 J / 2000 J) * 100 = 60%.
Steps: 0

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