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In the technological development of engines, trial and error played an important role. Improved engines were often made by trial and error. That is, trying to overcome a drawback of an existing engine or the impracticality of a proposed engine design led to the development of a new engine.
Match the engines in the following list with their drawbacks. Place your answer in the blank space given.
-This engine was large and massive and less efficient than thought possible.
Answer 1
-The boiler could not withstand the steam pressure needed to lift water beyond 6 m.
Answer 2
-The continual reheating needed after each cooling of the engine cylinder required a tremendous amount of thermal energy.
Answer 3
The engine had no mechanism to move the piston back to complete a cycle.
-Answer 4
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