Which statement regarding engine driven propellers is true?

• A. An engine driven propeller imparts a relatively small amount of acceleration to a large mass of air
• B. An engine driven propeller imparts a relatively large amount of acceleration to a smaller mass of air
• C. In modern turboprop engines nearly 50 percent of the exhaust gas energy is extracted by turbines to drive the propeller and compressor
• D. The propeller produces no acceleration of air

Answer: (B)