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      Question

      Which type of engine has one power stroke for every

      revolution of the crankshaft?
      A Four-stroke engine Correct Answer Incorrect Answer
      B Electric motor Correct Answer Incorrect Answer
      C Diesel generator Correct Answer Incorrect Answer
      D Two-stroke engine Correct Answer Incorrect Answer
      E Steam engine Correct Answer Incorrect Answer

      Solution

      In a two-stroke engine, one power stroke occurs for each revolution of the crankshaft, unlike in a four-stroke engine which has a power stroke every two revolutions. This makes two-stroke engines more power-dense.

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