AMP - Aviation Maintenance Technician Powerplant Practice Exam

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Three types of turbine blades are:

  1. impulse, converging, and impulse-converging

  2. impulse, reaction, and impulse-reaction

  3. impulse, diverging, and impulse-diverging

  4. reaction, converging, and diverging

The correct answer is: impulse, reaction, and impulse-reaction

Turbine blades are typically classified by their main design features impulse and reaction. Impulse blades rely on the kinetic energy of a fluid to drive the turbine, while reaction blades rely on the pressure energy of the fluid. Both types are commonly used in steam turbines. Converging and diverging blades refer to their shape, but these terms are less commonly used in the classification of turbine blades compared to impulse and reaction. Therefore, options A, C, and D are incorrect because they do not accurately describe the types of turbine blades and mix up the terms used in their classification. Option B is correct because it includes the two main types of turbine blades: impulse and reaction.

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