AMP - Aviation Maintenance Technician Powerplant Practice Exam

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What is the difference between a reciprocating engine and a turbine engine in terms of operation?

A reciprocating engine uses a rotating shaft, while a turbine engine uses pistons

A reciprocating engine uses pistons, while a turbine engine uses a rotating shaft

A reciprocating engine operates by converting the linear motion of pistons into rotational motion through a crankshaft. This mechanism relies on the combustion of fuel within cylinders, which pushes the pistons down, creating the necessary power. In contrast, a turbine engine operates based on the principles of thermodynamics and fluid mechanics. It relies on high-speed, high-temperature airflow through a series of compressor and turbine stages, which creates thrust or rotational power without the use of pistons.

The distinguishing factor is that the turbine engine utilizes the energy of the combustion gases to turn a shaft directly, while the reciprocating engine's power comes from the movement of pistons. This fundamental operational difference highlights the different designs and performance characteristics inherent in each engine type.

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A reciprocating engine has a fixed speed, while a turbine engine is variable

A reciprocating engine operates on diesel, while a turbine engine operates on gasoline

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