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High-bypass turbofans are usually most efficient when the aircraft is traveling at __________

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High-bypass turbofans are usually most efficient when the aircraft is traveling at __________

(a) 500-550 mph

(b) 50-55 mph

(c) 20-25 mph

(d) 200-250 mph

The question was asked in an international level competition.

My question is based upon Fundamentals topic in division Aircraft Fundamentals of Aircraft Maintenance

1 Answer

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Best answer
Right option is (a) 500-550 mph

Easy explanation: High-bypass turbofans are usually most efficient when the aircraft is traveling at 500 to 550 miles per hour (800 to 885 km/h) i.e. the cruise speed of most large airliners.

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