Turbine blade stages may be classed as either impulse or reaction.In an impulse blade section the pressure (i).. across the nozzle guide vanes and (ii).. across the rotor blades:

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Question ATPL - Airline Transport Pilot license - Aircraft General Knowledge - Airframe, Systems, Powerplant

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(i) drops (ii) remains constant

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(i) remains constant (ii) rises

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(i) remains constant (ii) drops

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(i) Rises (ii) Remains Constant

Id 439 - ATPL - Turbine blade stages may be classed as either "impulse" or "reaction".In an impulse blade section the pressure (i).. across the nozzle guide vanes and (ii).. across the rotor blades: