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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:

Question 439 - Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL - Airline Transport Pilot license

(i) drops (ii) remains constant
(i) remains constant (ii) rises
(i) remains constant (ii) drops
(i) rises (ii) remains constant

Training tests and timed exam simulations ATPL - Airline Transport Pilot license