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619 - ATPL Question Bank in English - The engine pressure ratio (EPR) is the ratio of:

Question 619 - Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL - Airline Transport Pilot Licence

The total turbine inlet pressure to the total compressor inlet pressure.
Total compressor outlet pressure to the total turbine outlet pressure.
The total turbine outlet pressure to the total compressor inlet pressure.
Total compressor inlet pressure to the total turbine outlet pressure.

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