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Home > Exam Questions > ATPL - Airline Transport Pilot Licence > Aircraft General Knowledge - Airframe, Systems, Powerplant > When hot engine oil transfers heat to cooler fuel in a turbine-engine fuel-oil heat exchanger, the normal result is:

617 - ATPL Question Bank in English - When hot engine oil transfers heat to cooler fuel in a turbine-engine fuel-oil heat exchanger, the normal result is:

Question 617 - Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL - Airline Transport Pilot Licence

The engine oil is cooled and the fuel is warmed

Both the engine oil and fuel are cooled by heat transfer only between those two fluids

The fuel is cooled while the oil is heated

Neither fluid changes temperature because a heat exchanger prevents heat transfer

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