PSTAR Practice Test · Question
What effect does increased air density have on aircraft performance?
Increased air density (due to lower altitude, lower temperature, or higher pressure) means there are more air molecules available for the engine to ingest and f
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Question: What effect does increased air density have on aircraft performance?
Answer options:
- Reduced engine power and reduced lift. ✅ Increased engine power and increased lift.
- No significant effect on performance.
- Reduced engine power but increased lift.
Correct answer: Increased engine power and increased lift.
Explanation: Increased air density (due to lower altitude, lower temperature, or higher pressure) means there are more air molecules available for the engine to ingest and for the wings to act upon, resulting in increased engine power, propeller efficiency, and wing lift, thereby improving overall performance.
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- Within a control zone, what is the minimum flight visibility for VFR flight by day?
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